What’s Vulnerable › Vulnerabilities

CVE-2010-3301

• Severity: high (CVSS 7.2 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2010-09-22 · updated 2026-06-16
• Weakness: CWE-269

Description

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.

Affected products

• Canonical Ubuntu Linux: 9.10, 10.04, 10.10
• Linux kernel: before 2.6.36; 2.6.36, 2.6.36-rc1, 2.6.36-rc2, 2.6.36-rc3 — fixed in 2.6.36
• SUSE Linux Enterprise Real Time Extension: 11-sp1

How to fix

Upgrade to a fixed version: Linux kernel 2.6.36. Check the vendor advisory for mitigations.

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=36d001c70d8a0144ac1d038f6876c484849a74de
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=eefdca043e8391dcd719711716492063030b55ac
• http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
• http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
• http://secunia.com/advisories/42758
• http://sota.gen.nz/compat2/
• http://www.kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.36-rc4-git2.log
• http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
• http://www.mandriva.com/security/advisories?name=MDVSA-2010:247
• http://www.openwall.com/lists/oss-security/2010/09/16/1
• http://www.openwall.com/lists/oss-security/2010/09/16/3
• http://www.redhat.com/support/errata/RHSA-2010-0842.html

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