CVE-2010-3301

Publication date 15 September 2010

Last updated 24 July 2024

Ubuntu priority

High

Why this priority?

The IA32 system call emulation functionality in arch/x86/ia32/ia32entry.S in the Linux kernel before 2.6.36-rc4-git2 on the x86_64 platform does not zero extend the %eax register after the 32-bit entry path to ptrace is used, which allows local users to gain privileges by triggering an out-of-bounds access to the system call table using the %rax register. NOTE: this vulnerability exists because of a CVE-2007-4573 regression.

From the Ubuntu Security Team

Ben Hawkes discovered that the Linux kernel did not correctly filter registers on 64bit kernels when performing 32bit system calls. On a 64bit system, a local attacker could manipulate 32bit system calls to gain root privileges.

Read the notes from the security team

Status

No maintained releases are affected by this CVE.

Package Ubuntu Release Status
linux 10.10 maverick
Fixed 2.6.35-22.32
10.04 LTS lucid
Fixed 2.6.32-24.43
9.10 karmic
Fixed 2.6.31-22.65
9.04 jaunty
Fixed 2.6.28-19.65
8.04 LTS hardy
Not affected
6.06 LTS dapper Not in release
linux-ec2 10.10 maverick
Not affected
10.04 LTS lucid
Fixed 2.6.32-311.23
9.10 karmic
Fixed 2.6.31-307.23
9.04 jaunty Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
linux-fsl-imx51 10.10 maverick Not in release
10.04 LTS lucid
Fixed 2.6.31-608.22
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 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-source-2.6.15 10.10 maverick Not in release
10.04 LTS lucid Not in release
9.10 karmic Not in release
9.04 jaunty Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper
Not affected

Notes

kees

only exploitable on x86_64, regression of CVE-2007-4573 was originally fixed in 2.6.22, but regressed after this commit: http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.35.y.git;a=commitdiff;h=d4d67150165df8bf1cc05e532f6efca96f907cab

smb

Which was 2.6.27 upstream, the original fix was in 2.6.23

kees

it was later discovered that the Xen kernels (linux-ec2) needed an additional patch.

References

Related Ubuntu Security Notices (USN)

    • USN-988-1
    • Linux kernel vulnerabilities
    • 17 September 2010
    • USN-1083-1
    • Linux kernel vulnerabilities
    • 3 March 2011
    • USN-1074-1
    • Linux kernel vulnerabilities
    • 25 February 2011
    • USN-1041-1
    • Linux kernel vulnerabilities
    • 10 January 2011
    • USN-1074-2
    • Linux kernel vulnerabilities
    • 28 February 2011

Other references