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Fencer Intel
high 7.5

CVE-2011-2482 json

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 Enterp…

published 2013-06-08 13 y ago modified 2026-06-16 4 mo ago also EUVD-2011-2470

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.8%
EPSS 3.8% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

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.

Patch / fix

  • linux linux_kernel 2.6.21
  • kernel RHEL 5 2.6.18-274.3.1.el5
  • kernel-PAE RHEL 5 2.6.18-274.3.1.el5
  • kernel-xen RHEL 5 2.6.18-274.3.1.el5
  • kernel-kdump RHEL 5 2.6.18-274.3.1.el5
  • kernel-debuginfo-common RHEL 5 2.6.18-274.3.1.el5
  • kernel RHEL 5.6 EUS 2.6.18-238.31.1.el5
  • kernel-PAE RHEL 5.6 EUS 2.6.18-238.31.1.el5
  • kernel-xen RHEL 5.6 EUS 2.6.18-238.31.1.el5

red hat advisories RHSA-2011:1813RHSA-2011:1212

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-2482 updated cvss 7.8

kernel: sctp dos

  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-274.3.1.el5, kernel-PAE 2.6.18-274.3.1.el5, kernel-xen 2.6.18-274.3.1.el5, kernel-kdump 2.6.18-274.3.1.el5, kernel-debuginfo-common 2.6.18-274.3.1.el5 Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-274.3.1.el5, kernel-PAE 2.6.18-274.3.1.el5, kernel-xen 2.6.18-274.3.1.el5, kernel-debuginfo-common 2.6.18-274.3.1.el5
    fixed: vendor fix RHSA-2011:1212
  • Red Hat Enterprise Linux EUS (v. 5.6 server) kernel 2.6.18-238.31.1.el5, kernel-PAE 2.6.18-238.31.1.el5, kernel-xen 2.6.18-238.31.1.el5, kernel-kdump 2.6.18-238.31.1.el5, kernel-debuginfo-common 2.6.18-238.31.1.el5
    fixed: vendor fix RHSA-2011:1813
  • Red Hat Enterprise Linux 4 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.77% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=714867 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.