mbedtls - Debian Package Tracker

general

source: mbedtls (main)
version: 3.6.5-0.1
maintainer: Debian IoT Maintainers (archive) (DMD)
uploaders: Andrea Pappacoda [DMD]
arch: all any
std-ver: 4.7.2
VCS: Git (Browse, QA)

versions [more versions can be listed by madison] [old versions available from snapshot.debian.org]

[pool directory]

o-o-stable: 2.16.9-0.1
o-o-sec: 2.16.9-0.1+deb11u3
oldstable: 2.28.3-1
stable: 3.6.5-0.1~deb13u1
testing: 3.6.5-0.1
unstable: 3.6.5-0.1

versioned links

2.16.9-0.1: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
2.16.9-0.1+deb11u3: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
2.28.3-1: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
3.6.5-0.1~deb13u1: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
3.6.5-0.1: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]

binaries

libmbedcrypto16 (1 bugs: 0, 0, 1, 0)
libmbedtls-dev (1 bugs: 0, 1, 0, 0)
libmbedtls-doc
libmbedtls21
libmbedx509-7

action needed

7 security issues in trixie high

There are 7 open security issues in trixie.

7 important issues:

CVE-2026-34871: An issue was discovered in Mbed TLS before 3.6.6 and 4.x before 4.1.0 and TF-PSA-Crypto before 1.1.0. There is a Predictable Seed in a Pseudo-Random Number Generator (PRNG).
CVE-2026-34872: An issue was discovered in Mbed TLS 3.5.x and 3.6.x through 3.6.5 and TF-PSA-Crypto 1.0. There is a lack of contributory behavior in FFDH due to improper input validation. Using finite-field Diffie-Hellman, the other party can force the shared secret into a small set of values (lack of contributory behavior). This is a problem for protocols that depend on contributory behavior (which is not the case for TLS). The attack can be carried by the peer, or depending on the protocol by an active network attacker (person in the middle).
CVE-2026-34873: An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session.
CVE-2026-34874: An issue was discovered in Mbed TLS through 3.6.5 and 4.x through 4.0.0. There is a NULL pointer dereference in distinguished name parsing that allows an attacker to write to address 0.
CVE-2026-34875: An issue was discovered in Mbed TLS through 3.6.5 and TF-PSA-Crypto 1.0.0. A buffer overflow can occur in public key export for FFDH keys.
CVE-2026-34876: An issue was discovered in Mbed TLS 3.x before 3.6.6. An out-of-bounds read vulnerability in mbedtls_ccm_finish() in library/ccm.c allows attackers to obtain adjacent CCM context data via invocation of the multipart CCM API with an oversized tag_len parameter. This is caused by missing validation of the tag_len parameter against the size of the internal 16-byte authentication buffer. The issue affects the public multipart CCM API in Mbed TLS 3.x, where mbedtls_ccm_finish() can be invoked directly by applications. In Mbed TLS 4.x versions prior to the fix, the same missing validation exists in the internal implementation; however, the function is not exposed as part of the public API. Exploitation requires application-level invocation of the multipart CCM API.
CVE-2026-34877: An issue was discovered in Mbed TLS versions from 2.19.0 up to 3.6.5, Mbed TLS 4.0.0. Insufficient protection of serialized SSL context or session structures allows an attacker who can modify the serialized structures to induce memory corruption, leading to arbitrary code execution. This is caused by Incorrect Use of Privileged APIs.

Created: 2026-04-02 Last update: 2026-04-03 11:00

7 security issues in sid high

There are 7 open security issues in sid.

7 important issues:

CVE-2026-34871: An issue was discovered in Mbed TLS before 3.6.6 and 4.x before 4.1.0 and TF-PSA-Crypto before 1.1.0. There is a Predictable Seed in a Pseudo-Random Number Generator (PRNG).
CVE-2026-34872: An issue was discovered in Mbed TLS 3.5.x and 3.6.x through 3.6.5 and TF-PSA-Crypto 1.0. There is a lack of contributory behavior in FFDH due to improper input validation. Using finite-field Diffie-Hellman, the other party can force the shared secret into a small set of values (lack of contributory behavior). This is a problem for protocols that depend on contributory behavior (which is not the case for TLS). The attack can be carried by the peer, or depending on the protocol by an active network attacker (person in the middle).
CVE-2026-34873: An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session.
CVE-2026-34874: An issue was discovered in Mbed TLS through 3.6.5 and 4.x through 4.0.0. There is a NULL pointer dereference in distinguished name parsing that allows an attacker to write to address 0.
CVE-2026-34875: An issue was discovered in Mbed TLS through 3.6.5 and TF-PSA-Crypto 1.0.0. A buffer overflow can occur in public key export for FFDH keys.
CVE-2026-34876: An issue was discovered in Mbed TLS 3.x before 3.6.6. An out-of-bounds read vulnerability in mbedtls_ccm_finish() in library/ccm.c allows attackers to obtain adjacent CCM context data via invocation of the multipart CCM API with an oversized tag_len parameter. This is caused by missing validation of the tag_len parameter against the size of the internal 16-byte authentication buffer. The issue affects the public multipart CCM API in Mbed TLS 3.x, where mbedtls_ccm_finish() can be invoked directly by applications. In Mbed TLS 4.x versions prior to the fix, the same missing validation exists in the internal implementation; however, the function is not exposed as part of the public API. Exploitation requires application-level invocation of the multipart CCM API.
CVE-2026-34877: An issue was discovered in Mbed TLS versions from 2.19.0 up to 3.6.5, Mbed TLS 4.0.0. Insufficient protection of serialized SSL context or session structures allows an attacker who can modify the serialized structures to induce memory corruption, leading to arbitrary code execution. This is caused by Incorrect Use of Privileged APIs.

Created: 2026-04-02 Last update: 2026-04-03 11:00

7 security issues in forky high

There are 7 open security issues in forky.

7 important issues:

CVE-2026-34871: An issue was discovered in Mbed TLS before 3.6.6 and 4.x before 4.1.0 and TF-PSA-Crypto before 1.1.0. There is a Predictable Seed in a Pseudo-Random Number Generator (PRNG).
CVE-2026-34872: An issue was discovered in Mbed TLS 3.5.x and 3.6.x through 3.6.5 and TF-PSA-Crypto 1.0. There is a lack of contributory behavior in FFDH due to improper input validation. Using finite-field Diffie-Hellman, the other party can force the shared secret into a small set of values (lack of contributory behavior). This is a problem for protocols that depend on contributory behavior (which is not the case for TLS). The attack can be carried by the peer, or depending on the protocol by an active network attacker (person in the middle).
CVE-2026-34873: An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session.
CVE-2026-34874: An issue was discovered in Mbed TLS through 3.6.5 and 4.x through 4.0.0. There is a NULL pointer dereference in distinguished name parsing that allows an attacker to write to address 0.
CVE-2026-34875: An issue was discovered in Mbed TLS through 3.6.5 and TF-PSA-Crypto 1.0.0. A buffer overflow can occur in public key export for FFDH keys.
CVE-2026-34876: An issue was discovered in Mbed TLS 3.x before 3.6.6. An out-of-bounds read vulnerability in mbedtls_ccm_finish() in library/ccm.c allows attackers to obtain adjacent CCM context data via invocation of the multipart CCM API with an oversized tag_len parameter. This is caused by missing validation of the tag_len parameter against the size of the internal 16-byte authentication buffer. The issue affects the public multipart CCM API in Mbed TLS 3.x, where mbedtls_ccm_finish() can be invoked directly by applications. In Mbed TLS 4.x versions prior to the fix, the same missing validation exists in the internal implementation; however, the function is not exposed as part of the public API. Exploitation requires application-level invocation of the multipart CCM API.
CVE-2026-34877: An issue was discovered in Mbed TLS versions from 2.19.0 up to 3.6.5, Mbed TLS 4.0.0. Insufficient protection of serialized SSL context or session structures allows an attacker who can modify the serialized structures to induce memory corruption, leading to arbitrary code execution. This is caused by Incorrect Use of Privileged APIs.

Created: 2026-04-02 Last update: 2026-04-03 11:00

16 security issues in bullseye high

There are 16 open security issues in bullseye.

9 important issues:

CVE-2025-54764: Mbed TLS before 3.6.5 allows a local timing attack against certain RSA operations, and direct calls to mbedtls_mpi_mod_inv or mbedtls_mpi_gcd.
CVE-2025-59438: Mbed TLS through 3.6.4 has an Observable Timing Discrepancy.
CVE-2026-34871: An issue was discovered in Mbed TLS before 3.6.6 and 4.x before 4.1.0 and TF-PSA-Crypto before 1.1.0. There is a Predictable Seed in a Pseudo-Random Number Generator (PRNG).
CVE-2026-34872: An issue was discovered in Mbed TLS 3.5.x and 3.6.x through 3.6.5 and TF-PSA-Crypto 1.0. There is a lack of contributory behavior in FFDH due to improper input validation. Using finite-field Diffie-Hellman, the other party can force the shared secret into a small set of values (lack of contributory behavior). This is a problem for protocols that depend on contributory behavior (which is not the case for TLS). The attack can be carried by the peer, or depending on the protocol by an active network attacker (person in the middle).
CVE-2026-34873: An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session.
CVE-2026-34874: An issue was discovered in Mbed TLS through 3.6.5 and 4.x through 4.0.0. There is a NULL pointer dereference in distinguished name parsing that allows an attacker to write to address 0.
CVE-2026-34875: An issue was discovered in Mbed TLS through 3.6.5 and TF-PSA-Crypto 1.0.0. A buffer overflow can occur in public key export for FFDH keys.
CVE-2026-34876: An issue was discovered in Mbed TLS 3.x before 3.6.6. An out-of-bounds read vulnerability in mbedtls_ccm_finish() in library/ccm.c allows attackers to obtain adjacent CCM context data via invocation of the multipart CCM API with an oversized tag_len parameter. This is caused by missing validation of the tag_len parameter against the size of the internal 16-byte authentication buffer. The issue affects the public multipart CCM API in Mbed TLS 3.x, where mbedtls_ccm_finish() can be invoked directly by applications. In Mbed TLS 4.x versions prior to the fix, the same missing validation exists in the internal implementation; however, the function is not exposed as part of the public API. Exploitation requires application-level invocation of the multipart CCM API.
CVE-2026-34877: An issue was discovered in Mbed TLS versions from 2.19.0 up to 3.6.5, Mbed TLS 4.0.0. Insufficient protection of serialized SSL context or session structures allows an attacker who can modify the serialized structures to induce memory corruption, leading to arbitrary code execution. This is caused by Incorrect Use of Privileged APIs.

4 issues postponed or untriaged:

CVE-2024-23170: (needs triaging) An issue was discovered in Mbed TLS 2.x before 2.28.7 and 3.x before 3.5.2. There was a timing side channel in RSA private operations. This side channel could be sufficient for a local attacker to recover the plaintext. It requires the attacker to send a large number of messages for decryption, as described in "Everlasting ROBOT: the Marvin Attack" by Hubert Kario.
CVE-2024-23775: (needs triaging) Integer Overflow vulnerability in Mbed TLS 2.x before 2.28.7 and 3.x before 3.5.2, allows attackers to cause a denial of service (DoS) via mbedtls_x509_set_extension().
CVE-2024-28755: (needs triaging) An issue was discovered in Mbed TLS 3.5.x before 3.6.0. When an SSL context was reset with the mbedtls_ssl_session_reset() API, the maximum TLS version to be negotiated was not restored to the configured one. An attacker was able to prevent an Mbed TLS server from establishing any TLS 1.3 connection, potentially resulting in a Denial of Service or forced version downgrade from TLS 1.3 to TLS 1.2.
CVE-2024-28960: (needs triaging) An issue was discovered in Mbed TLS 2.18.0 through 2.28.x before 2.28.8 and 3.x before 3.6.0, and Mbed Crypto. The PSA Crypto API mishandles shared memory.

3 ignored issues:

CVE-2022-35409: An issue was discovered in Mbed TLS before 2.28.1 and 3.x before 3.2.0. In some configurations, an unauthenticated attacker can send an invalid ClientHello message to a DTLS server that causes a heap-based buffer over-read of up to 255 bytes. This can cause a server crash or possibly information disclosure based on error responses. Affected configurations have MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled and MBEDTLS_SSL_IN_CONTENT_LEN less than a threshold that depends on the configuration: 258 bytes if using mbedtls_ssl_cookie_check, and possibly up to 571 bytes with a custom cookie check function.
CVE-2025-27809: Mbed TLS before 2.28.10 and 3.x before 3.6.3, on the client side, accepts servers that have trusted certificates for arbitrary hostnames unless the TLS client application calls mbedtls_ssl_set_hostname.
CVE-2025-27810: Mbed TLS before 2.28.10 and 3.x before 3.6.3, in some cases of failed memory allocation or hardware errors, uses uninitialized stack memory to compose the TLS Finished message, potentially leading to authentication bypasses such as replays.

Created: 2025-10-21 Last update: 2026-04-03 11:00

19 security issues in bookworm high

There are 19 open security issues in bookworm.

13 important issues:

CVE-2025-47917: Mbed TLS before 3.6.4 allows a use-after-free in certain situations of applications that are developed in accordance with the documentation. The function mbedtls_x509_string_to_names() takes a head argument that is documented as an output argument. The documentation does not suggest that the function will free that pointer; however, the function does call mbedtls_asn1_free_named_data_list() on that argument, which performs a deep free(). As a result, application code that uses this function (relying only on documented behavior) is likely to still hold pointers to the memory blocks that were freed, resulting in a high risk of use-after-free or double-free. In particular, the two sample programs x509/cert_write and x509/cert_req are affected (use-after-free if the san string contains more than one DN).
CVE-2025-48965: Mbed TLS before 3.6.4 has a NULL pointer dereference because mbedtls_asn1_store_named_data can trigger conflicting data with val.p of NULL but val.len greater than zero.
CVE-2025-52496: Mbed TLS before 3.6.4 has a race condition in AESNI detection if certain compiler optimizations occur. An attacker may be able to extract an AES key from a multithreaded program, or perform a GCM forgery.
CVE-2025-52497: Mbed TLS before 3.6.4 has a PEM parsing one-byte heap-based buffer underflow, in mbedtls_pem_read_buffer and two mbedtls_pk_parse functions, via untrusted PEM input.
CVE-2025-54764: Mbed TLS before 3.6.5 allows a local timing attack against certain RSA operations, and direct calls to mbedtls_mpi_mod_inv or mbedtls_mpi_gcd.
CVE-2025-59438: Mbed TLS through 3.6.4 has an Observable Timing Discrepancy.
CVE-2026-34871: An issue was discovered in Mbed TLS before 3.6.6 and 4.x before 4.1.0 and TF-PSA-Crypto before 1.1.0. There is a Predictable Seed in a Pseudo-Random Number Generator (PRNG).
CVE-2026-34872: An issue was discovered in Mbed TLS 3.5.x and 3.6.x through 3.6.5 and TF-PSA-Crypto 1.0. There is a lack of contributory behavior in FFDH due to improper input validation. Using finite-field Diffie-Hellman, the other party can force the shared secret into a small set of values (lack of contributory behavior). This is a problem for protocols that depend on contributory behavior (which is not the case for TLS). The attack can be carried by the peer, or depending on the protocol by an active network attacker (person in the middle).
CVE-2026-34873: An issue was discovered in Mbed TLS 3.5.0 through 4.0.0. Client impersonation can occur while resuming a TLS 1.3 session.
CVE-2026-34874: An issue was discovered in Mbed TLS through 3.6.5 and 4.x through 4.0.0. There is a NULL pointer dereference in distinguished name parsing that allows an attacker to write to address 0.
CVE-2026-34875: An issue was discovered in Mbed TLS through 3.6.5 and TF-PSA-Crypto 1.0.0. A buffer overflow can occur in public key export for FFDH keys.
CVE-2026-34876: An issue was discovered in Mbed TLS 3.x before 3.6.6. An out-of-bounds read vulnerability in mbedtls_ccm_finish() in library/ccm.c allows attackers to obtain adjacent CCM context data via invocation of the multipart CCM API with an oversized tag_len parameter. This is caused by missing validation of the tag_len parameter against the size of the internal 16-byte authentication buffer. The issue affects the public multipart CCM API in Mbed TLS 3.x, where mbedtls_ccm_finish() can be invoked directly by applications. In Mbed TLS 4.x versions prior to the fix, the same missing validation exists in the internal implementation; however, the function is not exposed as part of the public API. Exploitation requires application-level invocation of the multipart CCM API.
CVE-2026-34877: An issue was discovered in Mbed TLS versions from 2.19.0 up to 3.6.5, Mbed TLS 4.0.0. Insufficient protection of serialized SSL context or session structures allows an attacker who can modify the serialized structures to induce memory corruption, leading to arbitrary code execution. This is caused by Incorrect Use of Privileged APIs.

6 issues left for the package maintainer to handle:

CVE-2024-23170: (needs triaging) An issue was discovered in Mbed TLS 2.x before 2.28.7 and 3.x before 3.5.2. There was a timing side channel in RSA private operations. This side channel could be sufficient for a local attacker to recover the plaintext. It requires the attacker to send a large number of messages for decryption, as described in "Everlasting ROBOT: the Marvin Attack" by Hubert Kario.
CVE-2024-23775: (needs triaging) Integer Overflow vulnerability in Mbed TLS 2.x before 2.28.7 and 3.x before 3.5.2, allows attackers to cause a denial of service (DoS) via mbedtls_x509_set_extension().
CVE-2024-28755: (needs triaging) An issue was discovered in Mbed TLS 3.5.x before 3.6.0. When an SSL context was reset with the mbedtls_ssl_session_reset() API, the maximum TLS version to be negotiated was not restored to the configured one. An attacker was able to prevent an Mbed TLS server from establishing any TLS 1.3 connection, potentially resulting in a Denial of Service or forced version downgrade from TLS 1.3 to TLS 1.2.
CVE-2024-28960: (needs triaging) An issue was discovered in Mbed TLS 2.18.0 through 2.28.x before 2.28.8 and 3.x before 3.6.0, and Mbed Crypto. The PSA Crypto API mishandles shared memory.
CVE-2025-27809: (needs triaging) Mbed TLS before 2.28.10 and 3.x before 3.6.3, on the client side, accepts servers that have trusted certificates for arbitrary hostnames unless the TLS client application calls mbedtls_ssl_set_hostname.
CVE-2025-27810: (needs triaging) Mbed TLS before 2.28.10 and 3.x before 3.6.3, in some cases of failed memory allocation or hardware errors, uses uninitialized stack memory to compose the TLS Finished message, potentially leading to authentication bypasses such as replays.

You can find information about how to handle these issues in the security team's documentation.

Created: 2024-01-22 Last update: 2026-04-03 11:00

A new upstream version is available: 3.6.6 high

A new upstream version 3.6.6 is available, you should consider packaging it.

Created: 2026-04-03 Last update: 2026-04-03 06:30

The VCS repository is not up to date, push the missing commits. high

vcswatch reports that the current version of the package is not in its VCS.
Either you need to push your commits and/or your tags, or the information about the package's VCS are out of date. A common cause of the latter issue when using the Git VCS is not specifying the correct branch when the packaging is not in the default one (remote HEAD branch), which is usually "master" but can be modified in salsa.debian.org in the project's general settings with the "Default Branch" field). Alternatively the Vcs-Git field in debian/control can contain a "-b <branch-name>" suffix to indicate what branch is used for the Debian packaging.

Created: 2025-11-21 Last update: 2026-03-30 05:02

lintian reports 2 errors and 1 warning high

Lintian reports 2 errors and 1 warning about this package. You should make the package lintian clean getting rid of them.

Created: 2025-07-15 Last update: 2026-02-28 02:00

1 open merge request in Salsa normal

There is 1 open merge request for this package on Salsa. You should consider reviewing and/or merging these merge requests.

Created: 2025-09-23 Last update: 2025-10-12 04:30

Standards version of the package is outdated. wishlist

The package should be updated to follow the last version of Debian Policy (Standards-Version 4.7.4 instead of 4.7.2).

Created: 2025-12-23 Last update: 2026-03-31 15:01

news

[rss feed]

[2026-01-03] Accepted mbedtls 3.6.5-0.1~deb13u1 (source) into proposed-updates (Debian FTP Masters) (signed by: Adrian Bunk)
[2025-11-23] mbedtls 3.6.5-0.1 MIGRATED to testing (Debian testing watch)
[2025-11-21] Accepted mbedtls 3.6.5-0.1 (source) into unstable (Adrian Bunk)
[2025-08-26] Accepted mbedtls 2.16.9-0.1+deb11u3 (source) into oldoldstable-security (Andrej Shadura) (signed by: Andrew Shadura)
[2025-08-10] Accepted mbedtls 2.16.9-0.1+deb11u2 (source) into oldoldstable-security (Andrej Shadura) (signed by: Andrew Shadura)
[2025-07-23] mbedtls 3.6.4-2 MIGRATED to testing (Debian testing watch)
[2025-07-14] Accepted mbedtls 3.6.4-2 (source) into unstable (Andrea Pappacoda)
[2025-07-13] Accepted mbedtls 3.6.4-1 (source) into unstable (Andrea Pappacoda)
[2025-06-30] Accepted mbedtls 2.16.9-0.1+deb11u1 (source) into oldstable-security (Andrej Shadura) (signed by: Andrew Shadura)
[2025-04-08] mbedtls 3.6.3-1 MIGRATED to testing (Debian testing watch)
[2025-04-05] Accepted mbedtls 3.6.3-1 (source) into unstable (Andrea Pappacoda)
[2024-11-23] mbedtls 3.6.2-3 MIGRATED to testing (Debian testing watch)
[2024-11-17] Accepted mbedtls 3.6.2-3 (source) into unstable (Andrea Pappacoda)
[2024-11-06] Accepted mbedtls 3.6.2-2 (source) into unstable (Andrea Pappacoda)
[2024-10-23] Accepted mbedtls 3.6.2-1 (source) into unstable (Andrea Pappacoda)
[2024-10-17] Accepted mbedtls 3.6.0-3 (source) into unstable (Andrea Pappacoda)
[2024-04-25] mbedtls 2.28.8-1 MIGRATED to testing (Debian testing watch)
[2024-04-10] Accepted mbedtls 3.6.0-2 (source) into experimental (Andrea Pappacoda)
[2024-04-08] Accepted mbedtls 3.6.0-1 (source amd64 all) into experimental (Debian FTP Masters) (signed by: bage@debian.org)
[2024-03-31] Accepted mbedtls 2.28.8-1 (source) into unstable (Andrea Pappacoda)
[2024-02-29] Accepted mbedtls 2.28.7-1.1 (source) into unstable (Graham Inggs)
[2024-02-03] Accepted mbedtls 2.28.7-1.1~exp1 (source) into experimental (Graham Inggs)
[2024-01-31] mbedtls 2.28.7-1 MIGRATED to testing (Debian testing watch)
[2024-01-31] mbedtls 2.28.7-1 MIGRATED to testing (Debian testing watch)
[2024-01-27] Accepted mbedtls 2.28.7-1 (source) into unstable (Andrea Pappacoda)
[2023-12-27] mbedtls 2.28.6-1 MIGRATED to testing (Debian testing watch)
[2023-12-24] Accepted mbedtls 2.28.6-1 (source) into unstable (Andrea Pappacoda)
[2023-10-14] mbedtls 2.28.5-1 MIGRATED to testing (Debian testing watch)
[2023-10-14] mbedtls 2.28.5-1 MIGRATED to testing (Debian testing watch)
[2023-10-11] Accepted mbedtls 2.28.5-1 (source) into unstable (Philippe Coval)

bugs [bug history graph]

all: 5
RC: 1
I&N: 2
M&W: 2
F&P: 0
patch: 0

links

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ubuntu

[Information about Ubuntu for Debian Developers]

version: 3.6.5-0.1ubuntu2
patches for 3.6.5-0.1ubuntu2