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CVE-2010-4248

Publication date 30 November 2010

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Race condition in the __exit_signal function in kernel/exit.c in the Linux kernel before 2.6.37-rc2 allows local users to cause a denial of service via vectors related to multithreaded exec, the use of a thread group leader in kernel/posix-cpu-timers.c, and the selection of a new thread group leader in the de_thread function in fs/exec.c.

From the Ubuntu Security Team

It was discovered that multithreaded exec did not handle CPU timers correctly. A local attacker could exploit this to crash the system, leading to a denial of service.

Status

Package Ubuntu Release Status
linux 11.04 natty
Fixed 2.6.37-5.13
10.10 maverick
Fixed 2.6.35-27.47
10.04 LTS lucid
Fixed 2.6.32-29.57
9.10 karmic
Fixed 2.6.31-22.73
8.04 LTS hardy
Fixed 2.6.24-28.86
6.06 LTS dapper Not in release
linux-ec2 11.04 natty Not in release
10.10 maverick Ignored end of life
10.04 LTS lucid
Fixed 2.6.32-313.25
9.10 karmic
Fixed 2.6.31-307.27
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
linux-fsl-imx51 11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Fixed 2.6.31-609.26
9.10 karmic
Fixed 2.6.31-112.30
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
linux-lts-backport-maverick 11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Fixed 2.6.35-28.50~lucid1
9.10 karmic Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
linux-lts-backport-natty 11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid
Not affected
8.04 LTS hardy Not in release
linux-mvl-dove 11.04 natty Not in release
10.10 maverick
Fixed 2.6.32-414.30
10.04 LTS lucid
Fixed 2.6.32-214.30
9.10 karmic Ignored end of life
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
linux-source-2.6.15 11.04 natty Not in release
10.10 maverick Not in release
10.04 LTS lucid Not in release
9.10 karmic Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper
Not affected
linux-ti-omap4 11.04 natty
Not affected
10.10 maverick
Fixed 2.6.35-903.23
10.04 LTS lucid Not in release
9.10 karmic Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release

References

Related Ubuntu Security Notices (USN)

    • USN-1073-1
    • Linux kernel vulnerabilities
    • 25 February 2011
    • USN-1080-1
    • Linux kernel vulnerabilities
    • 1 March 2011
    • USN-1080-2
    • Linux kernel vulnerabilities
    • 2 March 2011
    • USN-1072-1
    • Linux kernel vulnerabilities
    • 25 February 2011
    • USN-1164-1
    • Linux kernel vulnerabilities (i.MX51)
    • 6 July 2011
    • USN-1202-1
    • Linux kernel (OMAP4) vulnerabilities
    • 13 September 2011
    • USN-1081-1
    • Linux kernel vulnerabilities
    • 2 March 2011
    • USN-1187-1
    • Linux kernel (Maverick backport) vulnerabilities
    • 9 August 2011
    • USN-1093-1
    • Linux Kernel vulnerabilities (Marvell Dove)
    • 25 March 2011

Other references