CVE-2008-4307

Severity: medium (CVSS 4.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-01-13 · updated 2026-06-16
Weakness: CWE-362

Description

Race condition in the do_setlk function in fs/nfs/file.c in the Linux kernel before 2.6.26 allows local users to cause a denial of service (crash) via vectors resulting in an interrupted RPC call that leads to a stray FL_POSIX lock, related to improper handling of a race between fcntl and close in the EINTR case.

Affected products

Linux kernel: through 2.6.25.9; 2.2.27, 2.4.36, 2.4.36.1, 2.4.36.2, 2.4.36.3, 2.4.36.4 (+83)

References

http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.27.y.git%3Ba=commit%3Bh=c4d7c402b788b73dc24f1e54a57f89d3dc5eb7bc
http://openwall.com/lists/oss-security/2009/01/13/1
http://rhn.redhat.com/errata/RHSA-2009-0459.html
http://rhn.redhat.com/errata/RHSA-2009-0473.html
http://secunia.com/advisories/34917
http://secunia.com/advisories/34962
http://secunia.com/advisories/34981
http://secunia.com/advisories/35011
http://secunia.com/advisories/35015
http://secunia.com/advisories/37471
http://www.debian.org/security/2009/dsa-1787
http://www.debian.org/security/2009/dsa-1794

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