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Fencer Vulns
medium 4.9

CVE-2008-5300 json

Linux kernel 2.6.28 allows local users to cause a denial of service ("soft lockup" and process loss) via a large number of sendmsg function…

published 2008-12-01 17 y ago modified 2026-06-16 4 mo ago also EUVD-2008-5277

cvss
4.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

Linux kernel 2.6.28 allows local users to cause a denial of service ("soft lockup" and process loss) via a large number of sendmsg function calls, which does not block during AF_UNIX garbage collection and triggers an OOM condition, a different vulnerability than CVE-2008-5029.

Patch / fix

  • kernel RHEL 4 2.6.9-78.0.13.EL
  • kernel-smp RHEL 4 2.6.9-78.0.13.EL
  • kernel-xenU RHEL 4 2.6.9-78.0.13.EL
  • kernel-hugemem RHEL 4 2.6.9-78.0.13.EL
  • kernel-largesmp RHEL 4 2.6.9-78.0.13.EL
  • kernel RHEL 3 2.4.21-63.EL
  • kernel-smp RHEL 3 2.4.21-63.EL
  • kernel-BOOT RHEL 3 2.4.21-63.EL

red hat advisories RHSA-2009:0014RHSA-2009:1550RHSA-2009:0053RHSA-2009:0225RHSA-2009:0021

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-2008-5300 updated

kernel: fix soft lockups/OOM issues with unix socket garbage collector

  • Red Hat MRG Realtime for RHEL 5 Server kernel-rt 2.6.24.7-101.el5rt, kernel-rt-trace 2.6.24.7-101.el5rt, kernel-rt-vanilla 2.6.24.7-101.el5rt, kernel-rt-debuginfo-common 2.6.24.7-101.el5rt
    fixed: vendor fix RHSA-2009:0053
  • Red Hat Desktop version 3 kernel 2.4.21-63.EL, kernel-smp 2.4.21-63.EL, kernel-BOOT 2.4.21-63.EL, kernel-source 2.4.21-63.EL, kernel-hugemem 2.4.21-63.EL, kernel-unsupported 2.4.21-63.EL, +2 more
    fixed: vendor fix RHSA-2009:1550
  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-128.el5, kernel-PAE 2.6.18-128.el5, kernel-xen 2.6.18-128.el5, kernel-kdump 2.6.18-128.el5, kernel-debuginfo-common 2.6.18-128.el5
    fixed: vendor fix RHSA-2009:0225
  • Red Hat Enterprise Linux AS version 3 kernel 2.4.21-63.EL, kernel-smp 2.4.21-63.EL, kernel-BOOT 2.4.21-63.EL, kernel-source 2.4.21-63.EL, kernel-hugemem 2.4.21-63.EL, kernel-unsupported 2.4.21-63.EL, +2 more
    fixed: vendor fix RHSA-2009:1550
  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-78.0.13.EL, kernel-smp 2.6.9-78.0.13.EL, kernel-xenU 2.6.9-78.0.13.EL, kernel-hugemem 2.6.9-78.0.13.EL, kernel-largesmp 2.6.9-78.0.13.EL
    fixed: vendor fix RHSA-2009:0014
  • Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-128.el5, kernel-PAE 2.6.18-128.el5, kernel-xen 2.6.18-128.el5, kernel-kdump 2.6.18-128.el5, kernel-debuginfo-common 2.6.18-128.el5
    fixed: vendor fix RHSA-2009:0225
  • Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-78.0.13.EL, kernel-smp 2.6.9-78.0.13.EL, kernel-xenU 2.6.9-78.0.13.EL, kernel-hugemem 2.6.9-78.0.13.EL, kernel-largesmp 2.6.9-78.0.13.EL
    fixed: vendor fix RHSA-2009:0014
  • Red Hat Enterprise Linux ES version 3 kernel 2.4.21-63.EL, kernel-smp 2.4.21-63.EL, kernel-BOOT 2.4.21-63.EL, kernel-source 2.4.21-63.EL, kernel-hugemem 2.4.21-63.EL, kernel-unsupported 2.4.21-63.EL, +2 more
    fixed: vendor fix RHSA-2009:1550
show 4 more
  • Red Hat Enterprise Linux ES version 4 kernel 2.6.9-78.0.13.EL, kernel-smp 2.6.9-78.0.13.EL, kernel-xenU 2.6.9-78.0.13.EL, kernel-hugemem 2.6.9-78.0.13.EL, kernel-largesmp 2.6.9-78.0.13.EL
    fixed: vendor fix RHSA-2009:0014
  • Red Hat Enterprise Linux EUS (v. 5.2 server) kernel 2.6.18-92.1.24.el5, kernel-PAE 2.6.18-92.1.24.el5, kernel-xen 2.6.18-92.1.24.el5, kernel-kdump 2.6.18-92.1.24.el5, kernel-debuginfo-common 2.6.18-92.1.24.el5
    fixed: vendor fix RHSA-2009:0021
  • Red Hat Enterprise Linux WS version 3 kernel 2.4.21-63.EL, kernel-smp 2.4.21-63.EL, kernel-BOOT 2.4.21-63.EL, kernel-source 2.4.21-63.EL, kernel-hugemem 2.4.21-63.EL, kernel-unsupported 2.4.21-63.EL, +2 more
    fixed: vendor fix RHSA-2009:1550
  • Red Hat Enterprise Linux WS version 4 kernel 2.6.9-78.0.13.EL, kernel-smp 2.6.9-78.0.13.EL, kernel-xenU 2.6.9-78.0.13.EL, kernel-hugemem 2.6.9-78.0.13.EL, kernel-largesmp 2.6.9-78.0.13.EL
    fixed: vendor fix RHSA-2009:0014

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

0.40% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

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

Weakness
  • CWE-399 Resource Management Errors
Technology feeds

References

Sources

Fencer Vulns 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.