CVE-2012-4508

Severity: low (CVSS 1.9 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: 2012-12-21 · updated 2026-06-16
Weakness: CWE-362

Description

Race condition in fs/ext4/extents.c in the Linux kernel before 3.4.16 allows local users to obtain sensitive information from a deleted file by reading an extent that was not properly marked as uninitialized.

Affected products

Linux kernel: through 3.4.15; 3.0-rc1, 3.0-rc2, 3.0-rc3, 3.0-rc4, 3.0-rc5, 3.0-rc6 (+131)

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=dee1f973ca341c266229faa5a1a5bb268bed3531
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/091110.html
http://rhn.redhat.com/errata/RHSA-2012-1540.html
http://rhn.redhat.com/errata/RHSA-2013-0496.html
http://rhn.redhat.com/errata/RHSA-2013-1519.html
http://rhn.redhat.com/errata/RHSA-2013-1783.html
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.16
http://www.openwall.com/lists/oss-security/2012/10/25/1
http://www.ubuntu.com/usn/USN-1645-1
http://www.ubuntu.com/usn/USN-1899-1
http://www.ubuntu.com/usn/USN-1900-1
https://bugzilla.redhat.com/show_bug.cgi?id=869904

Get alerted when CVE-2012-4508 or the next vulnerability affects your stack