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CVE-2010-4258

Publication date 30 December 2010

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

The do_exit function in kernel/exit.c in the Linux kernel before 2.6.36.2 does not properly handle a KERNEL_DS get_fs value, which allows local users to bypass intended access_ok restrictions, overwrite arbitrary kernel memory locations, and gain privileges by leveraging a (1) BUG, (2) NULL pointer dereference, or (3) page fault, as demonstrated by vectors involving the clear_child_tid feature and the splice system call.

From the Ubuntu Security Team

Nelson Elhage discovered that the kernel did not correctly handle process cleanup after triggering a recoverable kernel bug. If a local attacker were able to trigger certain kinds of kernel bugs, they could create a specially crafted process to gain root privileges.

Status

Package Ubuntu Release Status
linux 11.04 natty
Fixed 2.6.37-9.22
10.10 maverick
Fixed 2.6.35-25.43
10.04 LTS lucid
Fixed 2.6.32-28.52
9.10 karmic Ignored end of life, was pending
8.04 LTS hardy
Fixed 2.6.24-29.88
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 2.6.32-312.24
9.10 karmic Ignored end of life
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 Ignored end of life
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 2.6.35-25.44~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
Fixed 2.6.15-57.97
linux-ti-omap4 11.04 natty
Not affected
10.10 maverick
Fixed 2.6.35-903.22
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

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-1164-1
    • Linux kernel vulnerabilities (i.MX51)
    • 6 July 2011
    • USN-1105-1
    • Linux kernel vulnerabilities
    • 5 April 2011
    • USN-1083-1
    • Linux kernel vulnerabilities
    • 3 March 2011
    • USN-1054-1
    • Linux kernel vulnerabilities
    • 1 February 2011
    • USN-1111-1
    • Linux kernel vulnerabilities
    • 5 May 2011
    • USN-1119-1
    • Linux kernel (OMAP4) vulnerabilities
    • 20 April 2011
    • USN-1093-1
    • Linux Kernel vulnerabilities (Marvell Dove)
    • 25 March 2011

Other references