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Fencer Intel
medium 4.9

CVE-2010-0727 json

The gfs2_lock function in the Linux kernel before 2.6.34-rc1-next-20100312, and the gfs_lock function in the Linux kernel on Red Hat Enterp…

published 2010-03-16 16 y ago modified 2026-06-16 4 mo ago also EUVD-2010-0753

cvss
4.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

The gfs2_lock function in the Linux kernel before 2.6.34-rc1-next-20100312, and the gfs_lock function in the Linux kernel on Red Hat Enterprise Linux (RHEL) 5 and 6, does not properly remove POSIX locks on files that are setgid without group-execute permission, which allows local users to cause a denial of service (BUG and system crash) by locking a file on a (1) GFS or (2) GFS2 filesystem, and then changing this file's permissions.

Patch / fix

  • kernel RHEL 5 2.6.18-194.el5
  • kernel-PAE RHEL 5 2.6.18-194.el5
  • kernel-xen RHEL 5 2.6.18-194.el5
  • kernel-kdump RHEL 5 2.6.18-194.el5
  • kernel-debuginfo-common RHEL 5 2.6.18-194.el5
  • GFS-kernel RHEL 4 GLOBAL_FILE_SYSTEM 2.6.9-85.2.el4_8.10
  • GFS-kernel-smp RHEL 4 GLOBAL_FILE_SYSTEM 2.6.9-85.2.el4_8.10
  • GFS-kernel-xenU RHEL 4 GLOBAL_FILE_SYSTEM 2.6.9-85.2.el4_8.10

red hat advisories RHSA-2010:0380RHSA-2010:0178RHSA-2010:0331RHSA-2010:0521RHSA-2010:0330RHSA-2010:0291

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-2010-0727 updated cvss 4.9

kernel: bug in GFS/GFS2 locking code leads to dos

  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-194.el5, kernel-PAE 2.6.18-194.el5, kernel-xen 2.6.18-194.el5, kernel-kdump 2.6.18-194.el5, kernel-debuginfo-common 2.6.18-194.el5
    fixed: vendor fix RHSA-2010:0178
  • Red Hat Enterprise Linux Cluster-Storage (v. 5 server) gfs-kmod 0.1.34-12.el5, kmod-gfs 0.1.34-12.el5, kmod-gfs-PAE 0.1.34-12.el5, kmod-gfs-xen 0.1.34-12.el5
    fixed: vendor fix RHSA-2010:0291
  • Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-194.el5, kernel-PAE 2.6.18-194.el5, kernel-xen 2.6.18-194.el5, kernel-debuginfo-common 2.6.18-194.el5
    fixed: vendor fix RHSA-2010:0178
  • Red Hat Enterprise Linux EUS (v. 5.4 server) kernel 2.6.18-164.17.1.el5, kernel-PAE 2.6.18-164.17.1.el5, kernel-xen 2.6.18-164.17.1.el5, kernel-kdump 2.6.18-164.17.1.el5, kernel-debuginfo-common 2.6.18-164.17.1.el5
    fixed: vendor fix RHSA-2010:0380
  • Red Hat RHEL Cluster-Storage (v. 5.4.Z server) gfs-kmod 0.1.34-2.el5_4.3, kmod-gfs 0.1.34-2.el5_4.3, kmod-gfs-PAE 0.1.34-2.el5_4.3, kmod-gfs-xen 0.1.34-2.el5_4.3
    fixed: vendor fix RHSA-2010:0521
  • Red Hat Enterprise Linux (v. 5 server) kernel-headers 2.6.18-194.el5 Red Hat Enterprise Linux Desktop (v. 5 client) kernel-headers 2.6.18-194.el5 Red Hat Enterprise Linux EUS (v. 5.4 server) kernel-headers 2.6.18-164.17.1.el5
    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

0.56% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=570863 referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2010/03/12/1 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

Weakness
  • CWE-399 Resource Management Errors
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.