Race Condition Affecting ocfs2-kmp-default package, versions <4.12.14-25.25.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published14 Apr 2022
- disclosed31 Oct 2018
Introduced: 31 Oct 2018
CVE-2017-18224 (opens in a new tab)How to fix?
Upgrade SLES:15.0 ocfs2-kmp-default to version 4.12.14-25.25.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ocfs2-kmp-default package and not the ocfs2-kmp-default package as distributed by SLES.
See How to fix? for SLES:15.0 relevant fixed versions and status.
In the Linux kernel before 4.15, fs/ocfs2/aops.c omits use of a semaphore and consequently has a race condition for access to the extent tree during read operations in DIRECT mode, which allows local users to cause a denial of service (BUG) by modifying a certain e_cpos field.
References
- https://www.suse.com/security/cve/CVE-2017-18224.html
- https://bugzilla.suse.com/1084831
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3e4c56d41eef5595035872a2ec5a483f42e8917f
- http://www.securityfocus.com/bid/103353
- https://github.com/torvalds/linux/commit/3e4c56d41eef5595035872a2ec5a483f42e8917f
- https://www.debian.org/security/2018/dsa-4188