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Fencer Intel
medium 4.9

CVE-2011-1023 json

The Reliable Datagram Sockets (RDS) subsystem in the Linux kernel before 2.6.38 does not properly handle congestion map updates, which allo…

published 2012-06-21 14 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1040

cvss
4.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits
0
none known

Summary

The Reliable Datagram Sockets (RDS) subsystem in the Linux kernel before 2.6.38 does not properly handle congestion map updates, which allows local users to cause a denial of service (BUG_ON and system crash) via vectors involving (1) a loopback (aka loop) transmit operation or (2) an InfiniBand (aka ib) transmit operation.

Patch / fix

  • kernel RHEL 6 2.6.32-131.0.15.el6
  • perf RHEL 6 2.6.32-131.0.15.el6
  • kernel-kdump RHEL 6 2.6.32-131.0.15.el6
  • kernel-firmware RHEL 6 2.6.32-131.0.15.el6
  • kernel-bootwrapper RHEL 6 2.6.32-131.0.15.el6
  • kernel-debuginfo-common-i686 RHEL 6 2.6.32-131.0.15.el6
  • kernel-debuginfo-common-ppc64 RHEL 6 2.6.32-131.0.15.el6
  • kernel-debuginfo-common-s390x RHEL 6 2.6.32-131.0.15.el6

red hat advisories RHSA-2011:0542

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-2011-1023 updated cvss 4.9

kernel: BUG_ON() in rds_send_xmit()

  • Red Hat Enterprise MRG 1 kernel-rt
    affected: no fix available
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-131.0.15.el6, kernel 2.6.32-131.0.15.el6, kernel-kdump 2.6.32-131.0.15.el6, kernel-firmware 2.6.32-131.0.15.el6, kernel-bootwrapper 2.6.32-131.0.15.el6, kernel-debuginfo-common-i686 2.6.32-131.0.15.el6, +3 more Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-131.0.15.el6, kernel 2.6.32-131.0.15.el6, kernel-kdump 2.6.32-131.0.15.el6, kernel-firmware 2.6.32-131.0.15.el6, kernel-bootwrapper 2.6.32-131.0.15.el6, kernel-debuginfo-common-i686 2.6.32-131.0.15.el6, +3 more Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-131.0.15.el6, kernel 2.6.32-131.0.15.el6, kernel-kdump 2.6.32-131.0.15.el6, kernel-firmware 2.6.32-131.0.15.el6, kernel-bootwrapper 2.6.32-131.0.15.el6, kernel-debuginfo-common-i686 2.6.32-131.0.15.el6, +3 more Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-131.0.15.el6, kernel 2.6.32-131.0.15.el6, kernel-kdump 2.6.32-131.0.15.el6, kernel-firmware 2.6.32-131.0.15.el6, kernel-bootwrapper 2.6.32-131.0.15.el6, kernel-debuginfo-common-i686 2.6.32-131.0.15.el6, +3 more
    fixed: vendor fix RHSA-2011:0542

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

0.48% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/torvalds/linux/commit/6094628bfd94323fc1cea05ec2c6affd98c18f7f referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Classification

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.