Race condition in Linux kernel - CVE-2012-4508
Published: December 21, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU43236
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2012-4508
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
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.
How to mitigate CVE-2012-4508
Install update from vendor's website.
Sources
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=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
- https://github.com/torvalds/linux/commit/dee1f973ca341c266229faa5a1a5bb268bed3531
- https://www.suse.com/support/update/announcement/2012/suse-su-20121679-1.html