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Fencer Vulns
medium 4.7

CVE-2009-1961 json

The inode double locking code in fs/ocfs2/file.c in the Linux kernel 2.6.30 before 2.6.30-rc3, 2.6.27 before 2.6.27.24, 2.6.29 before 2.6.2…

published 2009-06-06 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1956

cvss
4.7
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits
1
Exploit-DB

Summary

The inode double locking code in fs/ocfs2/file.c in the Linux kernel 2.6.30 before 2.6.30-rc3, 2.6.27 before 2.6.27.24, 2.6.29 before 2.6.29.4, and possibly other versions down to 2.6.19 allows local users to cause a denial of service (prevention of file creation and removal) via a series of splice system calls that trigger a deadlock between the generic_file_splice_write, splice_from_pipe, and ocfs2_file_splice_write functions.

Patch / fix

  • linux linux_kernel 2.6.27.24, 2.6.29.4
  • kernel-rt enterprise mrg 1 2.6.24.7-126.el5rt
  • kernel-rt-trace enterprise mrg 1 2.6.24.7-126.el5rt
  • kernel-rt-vanilla enterprise mrg 1 2.6.24.7-126.el5rt
  • kernel-rt-debuginfo-common enterprise mrg 1 2.6.24.7-126.el5rt

red hat advisories RHSA-2009:1157

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-2009-1961 updated cvss 2.1

kernel: splice local denial of service

  • Red Hat MRG Realtime for RHEL 5 Server kernel-rt 2.6.24.7-126.el5rt, kernel-rt-trace 2.6.24.7-126.el5rt, kernel-rt-vanilla 2.6.24.7-126.el5rt, kernel-rt-debuginfo-common 2.6.24.7-126.el5rt
    fixed: vendor fix RHSA-2009:1157

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

Timeline

  1. First public exploit (EDB-33015)
  2. Published

Exploit prediction

0.59% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-33015 Linux Kernel 2.6.x - 'splice(2)' Double Lock Local Denial of Service dos, 2009-05-29
  • openwall.com http://www.openwall.com/lists/oss-security/2009/05/30/1 referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2009/06/02/2 referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/35143 referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2009/06/03/1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 1.9 AV:L/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
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.