CVE-2010-0727

Severity: medium (CVSS 4.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2010-03-16 · updated 2026-06-16
Weakness: CWE-399

Description

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.

Affected products

Debian Linux: 5.0
Linux kernel: through 2.6.33.1
Red Hat Enterprise Linux: 5.0, 6.0

References

http://lkml.org/lkml/2010/3/11/269
http://secunia.com/advisories/39830
http://securitytracker.com/id?1023809
http://www.debian.org/security/2010/dsa-2053
http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.34-rc1-next-20100312.bz2
http://www.mandriva.com/security/advisories?name=MDVSA-2010:066
http://www.openwall.com/lists/oss-security/2010/03/12/1
http://www.redhat.com/support/errata/RHSA-2010-0330.html
http://www.redhat.com/support/errata/RHSA-2010-0380.html
http://www.redhat.com/support/errata/RHSA-2010-0521.html
https://bugzilla.redhat.com/show_bug.cgi?id=570863
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11392

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