What’s Vulnerable › Vulnerabilities

CVE-2011-1182

• 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: yes
• Published: 2013-03-01 · updated 2026-06-16

Description

kernel/signal.c in the Linux kernel before 2.6.39 allows local users to spoof the uid and pid of a signal sender via a sigqueueinfo system call.

Affected products

• Linux kernel: before 2.6.39 — fixed in 2.6.39
• Red Hat Enterprise Linux: 5.0
• RedHat Enterprise Linux Aus: 5.6
• RedHat Enterprise Linux Desktop: 5.0
• RedHat Enterprise Linux Eus: 5.6
• RedHat Enterprise Linux Server: 5.0
• RedHat Enterprise Linux Workstation: 5.0

How to fix

Upgrade to a fixed version: Linux kernel 2.6.39. Check the vendor advisory for mitigations.

References

• http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=da48524eb20662618854bb3df2db01fc65f3070c
• http://rhn.redhat.com/errata/RHSA-2011-0927.html
• http://www.openwall.com/lists/oss-security/2011/03/23/2
• https://bugzilla.redhat.com/show_bug.cgi?id=690028
• https://github.com/torvalds/linux/commit/da48524eb20662618854bb3df2db01fc65f3070c
• http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=da48524eb20662618854bb3df2db01fc65f3070c
• http://rhn.redhat.com/errata/RHSA-2011-0927.html
• http://www.openwall.com/lists/oss-security/2011/03/23/2
• https://bugzilla.redhat.com/show_bug.cgi?id=690028
• https://github.com/torvalds/linux/commit/da48524eb20662618854bb3df2db01fc65f3070c

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