What’s Vulnerable › Vulnerabilities

CVE-2011-0726

• Severity: low (CVSS 2.1 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-07-18 · updated 2026-06-16
• Weakness: CWE-20

Description

The do_task_stat function in fs/proc/array.c in the Linux kernel before 2.6.39-rc1 does not perform an expected uid check, which makes it easier for local users to defeat the ASLR protection mechanism by reading the start_code and end_code fields in the /proc/#####/stat file for a process executing a PIE binary.

Affected products

• Linux kernel: through 2.6.38.8; 2.6.0, 2.6.1, 2.6.1-rc1, 2.6.1-rc2, 2.6.1-rc3, 2.6.2 (+667)

References

• http://downloads.avaya.com/css/P8/documents/100145416
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5883f57ca0008ffc93e09cbb9847a1928e50c6f3
• http://rhn.redhat.com/errata/RHSA-2011-0833.html
• http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.39/ChangeLog-2.6.39-rc1
• http://www.securityfocus.com/bid/47791
• http://www.spinics.net/lists/mm-commits/msg82726.html
• https://bugzilla.redhat.com/show_bug.cgi?id=684569
• https://lkml.org/lkml/2011/3/11/380
• http://downloads.avaya.com/css/P8/documents/100145416
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=5883f57ca0008ffc93e09cbb9847a1928e50c6f3
• http://rhn.redhat.com/errata/RHSA-2011-0833.html
• http://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.39/ChangeLog-2.6.39-rc1

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