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Fencer Intel
high 7.1

CVE-2010-4526 json

Race condition in the sctp_icmp_proto_unreachable function in net/sctp/input.c in Linux kernel 2.6.11-rc2 through 2.6.33 allows remote atta…

published 15y ago modified 4mo ago also EUVD-2010-4494

cvss
7.1
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

Race condition in the sctp_icmp_proto_unreachable function in net/sctp/input.c in Linux kernel 2.6.11-rc2 through 2.6.33 allows remote attackers to cause a denial of service (panic) via an ICMP unreachable message to a socket that is already locked by a user, which causes the socket to be freed and triggers list corruption, related to the sctp_wait_for_connect function.

Patch / fix

  • kernel RHEL 6 2.6.32-71.24.1.el6
  • perf RHEL 6 2.6.32-71.24.1.el6
  • kernel-kdump RHEL 6 2.6.32-71.24.1.el6
  • kernel-firmware RHEL 6 2.6.32-71.24.1.el6
  • kernel-bootwrapper RHEL 6 2.6.32-71.24.1.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-71.24.1.el6
  • kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-71.24.1.el6
  • kernel-debuginfo-common-s390x RHEL 6 2.6.32-71.24.1.el6

red hat advisories RHSA-2011:0421RHSA-2011:1253RHSA-2011:0163

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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-2010-4526 updated cvss 7.1

kernel: sctp: a race between ICMP protocol unreachable and connect()

  • Red Hat Enterprise MRG 1 kernel-rt
    affected: no fix available
  • Red Hat Enterprise Linux (v. 5.6.z server) kernel 2.6.18-238.1.1.el5, kernel-PAE 2.6.18-238.1.1.el5, kernel-xen 2.6.18-238.1.1.el5, kernel-kdump 2.6.18-238.1.1.el5, kernel-debuginfo-common 2.6.18-238.1.1.el5
    fixed: vendor fix RHSA-2011:0163
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-71.24.1.el6, kernel 2.6.32-71.24.1.el6, kernel-firmware 2.6.32-71.24.1.el6, kernel-debuginfo-common-i686 2.6.32-71.24.1.el6, kernel-debuginfo-common-x86_64 2.6.32-71.24.1.el6 Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-71.24.1.el6, kernel 2.6.32-71.24.1.el6, kernel-firmware 2.6.32-71.24.1.el6, kernel-debuginfo-common-x86_64 2.6.32-71.24.1.el6 Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-71.24.1.el6, kernel 2.6.32-71.24.1.el6, kernel-kdump 2.6.32-71.24.1.el6, kernel-firmware 2.6.32-71.24.1.el6, kernel-bootwrapper 2.6.32-71.24.1.el6, kernel-debuginfo-common-i686 2.6.32-71.24.1.el6, +3 more Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-71.24.1.el6, kernel 2.6.32-71.24.1.el6, kernel-firmware 2.6.32-71.24.1.el6, kernel-debuginfo-common-i686 2.6.32-71.24.1.el6, kernel-debuginfo-common-x86_64 2.6.32-71.24.1.el6
    fixed: vendor fix RHSA-2011:0421
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 2.6.33.9-rt31.75.el6rt, kernel-rt-trace 2.6.33.9-rt31.75.el6rt, kernel-rt-vanilla 2.6.33.9-rt31.75.el6rt, kernel-rt-firmware 2.6.33.9-rt31.75.el6rt, kernel-rt-debuginfo-common-x86_64 2.6.33.9-rt31.75.el6rt
    fixed: vendor fix RHSA-2011:1253
  • Red Hat Enterprise Linux Desktop (v. 6) kernel-headers 2.6.32-71.24.1.el6 Red Hat Enterprise Linux HPC Node (v. 6) kernel-headers 2.6.32-71.24.1.el6 Red Hat Enterprise Linux Server (v. 6) kernel-headers 2.6.32-71.24.1.el6 Red Hat Enterprise Linux Workstation (v. 6) kernel-headers 2.6.32-71.24.1.el6
    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

2.52% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 7.1 AV:N/AC:M/Au:N/C:N/I:N/A:C

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
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.