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CVE-2012-2744

Publication date 10 July 2012

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

net/ipv6/netfilter/nf_conntrack_reasm.c in the Linux kernel before 2.6.34, when the nf_conntrack_ipv6 module is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via certain types of fragmented IPv6 packets.

From the Ubuntu Security Team

An error was found in the Linux kernel's IPv6 netfilter when connection tracking is enabled. A remote attacker could exploit this flaw to crash a system if it is using IPv6 with the nf_contrack_ipv6 kernel module loaded.

Read the notes from the security team

Status

Package Ubuntu Release Status
linux 12.04 LTS precise
Not affected
11.10 oneiric
Not affected
11.04 natty
Not affected
10.04 LTS lucid
Not affected
8.04 LTS hardy
Fixed 2.6.24-32.104
linux-armadaxp 12.04 LTS precise
Not affected
11.10 oneiric Not in release
11.04 natty Not in release
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release
linux-ec2 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release
linux-fsl-imx51 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.04 LTS lucid Ignored end of life
8.04 LTS hardy Not in release
linux-linaro-omap 12.04 LTS precise Ignored end of life
11.10 oneiric Ignored end of life
11.04 natty Ignored end of life
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release
linux-linaro-shared 12.04 LTS precise Ignored end of life
11.10 oneiric Ignored end of life
11.04 natty Not in release
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release
linux-linaro-vexpress 12.04 LTS precise Ignored end of life
11.10 oneiric Ignored end of life
11.04 natty Ignored end of life
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release
linux-lts-backport-maverick 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.04 LTS lucid Ignored end of life
8.04 LTS hardy Not in release
linux-lts-backport-natty 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release
linux-lts-backport-oneiric 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release
linux-mvl-dove 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.04 LTS lucid Ignored end of life
8.04 LTS hardy Not in release
linux-qcm-msm 12.04 LTS precise Ignored end of life
11.10 oneiric Ignored end of life
11.04 natty Ignored end of life
10.04 LTS lucid Ignored end of life
8.04 LTS hardy Not in release
linux-ti-omap4 12.04 LTS precise
Not affected
11.10 oneiric
Not affected
11.04 natty
Not affected
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release

Notes

jdstrand

linux-armadaxp is maintained by OEM commit is from 2010. Ubuntu 10.04 LTS confirmed as not affected downgrading to 'medium' (and therefore will follow the standard kernel cadence update process). This is a 2 year old fix that only affects Ubuntu 8.04 LTS when using IPv6.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
linux

References

Related Ubuntu Security Notices (USN)

    • USN-1507-1
    • Linux kernel vulnerabilities
    • 17 July 2012

Other references