CVE-2012-2375

Severity: medium (CVSS 4.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2012-06-13 · updated 2026-06-16
Weakness: CWE-189

Description

The __nfs4_get_acl_uncached function in fs/nfs/nfs4proc.c in the NFSv4 implementation in the Linux kernel before 3.3.2 uses an incorrect length variable during a copy operation, which allows remote NFS servers to cause a denial of service (OOPS) by sending an excessive number of bitmap words in an FATTR4_ACL reply. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-4131.

Affected products

Linux kernel: through 3.3.1; 3.3, 3.3-rc1, 3.3-rc2, 3.3-rc3, 3.3-rc4, 3.3-rc5 (+2)

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=20e0fa98b751facf9a1101edaefbc19c82616a68
http://marc.info/?l=bugtraq&m=139447903326211&w=2
http://rhn.redhat.com/errata/RHSA-2012-1580.html
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.2
http://www.openwall.com/lists/oss-security/2012/05/18/13
https://bugzilla.redhat.com/show_bug.cgi?id=822869
https://github.com/torvalds/linux/commit/20e0fa98b751facf9a1101edaefbc19c82616a68
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=20e0fa98b751facf9a1101edaefbc19c82616a68
http://marc.info/?l=bugtraq&m=139447903326211&w=2
http://rhn.redhat.com/errata/RHSA-2012-1580.html
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.2
http://www.openwall.com/lists/oss-security/2012/05/18/13

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