CVE-2013-0914

Severity: low (CVSS 3.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-03-22 · updated 2026-06-16
Weakness: CWE-264

Description

The flush_signal_handlers function in kernel/signal.c in the Linux kernel before 3.8.4 preserves the value of the sa_restorer field across an exec operation, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application containing a sigaction system call.

Affected products

Linux kernel: through 3.8.3; 3.8.0, 3.8.1, 3.8.2

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=2ca39528c01a933f6689cd6505ce65bd6d68a530
http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html
http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html
http://rhn.redhat.com/errata/RHSA-2013-1051.html
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4
http://www.mandriva.com/security/advisories?name=MDVSA-2013:176
http://www.openwall.com/lists/oss-security/2013/03/11/8
http://www.ubuntu.com/usn/USN-1787-1
http://www.ubuntu.com/usn/USN-1788-1
http://www.ubuntu.com/usn/USN-1792-1
http://www.ubuntu.com/usn/USN-1793-1
http://www.ubuntu.com/usn/USN-1794-1

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