CVE-2011-2482

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2013-06-08 · updated 2026-06-16
Weakness: CWE-476

Description

A certain Red Hat patch to the sctp_sock_migrate function in net/sctp/socket.c in the Linux kernel before 2.6.21, as used in Red Hat Enterprise Linux (RHEL) 5, allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) via a crafted SCTP packet.

Affected products

Linux kernel: before 2.6.21 — fixed in 2.6.21

How to fix

Upgrade to a fixed version: Linux kernel 2.6.21. Check the vendor advisory for mitigations.

References

http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ea2bc483ff5caada7c4aa0d5fbf87d3a6590273d
http://rhn.redhat.com/errata/RHSA-2011-1212.html
http://www.openwall.com/lists/oss-security/2011/08/30/1
https://bugzilla.redhat.com/show_bug.cgi?id=714867
https://github.com/torvalds/linux/commit/ea2bc483ff5caada7c4aa0d5fbf87d3a6590273d
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ea2bc483ff5caada7c4aa0d5fbf87d3a6590273d
http://rhn.redhat.com/errata/RHSA-2011-1212.html
http://www.openwall.com/lists/oss-security/2011/08/30/1
https://bugzilla.redhat.com/show_bug.cgi?id=714867
https://github.com/torvalds/linux/commit/ea2bc483ff5caada7c4aa0d5fbf87d3a6590273d

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