CVE-2010-2071

Severity: medium (CVSS 4.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2010-06-16 · updated 2026-06-16
Weakness: CWE-264

Description

The btrfs_xattr_set_acl function in fs/btrfs/acl.c in btrfs in the Linux kernel 2.6.34 and earlier does not check file ownership before setting an ACL, which allows local users to bypass file permissions by setting arbitrary ACLs, as demonstrated using setfacl.

Affected products

Linux kernel: through 2.6.34

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=2f26afba
http://lkml.org/lkml/2010/5/17/544
http://www.openwall.com/lists/oss-security/2010/06/11/3
http://www.openwall.com/lists/oss-security/2010/06/14/2
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=2f26afba
http://lkml.org/lkml/2010/5/17/544
http://www.openwall.com/lists/oss-security/2010/06/11/3
http://www.openwall.com/lists/oss-security/2010/06/14/2

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