Race Condition Affecting linux-4.9 package, versions *
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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Test your applications- Snyk IDSNYK-DEBIAN8-LINUX49-263043
- published26 Mar 2018
- disclosed26 Mar 2018
Introduced: 26 Mar 2018
CVE-2017-18249 (opens in a new tab)How to fix?
There is no fixed version for Debian:8 linux-4.9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream linux-4.9 package and not the linux-4.9 package as distributed by Debian.
See How to fix? for Debian:8 relevant fixed versions and status.
The add_free_nid function in fs/f2fs/node.c in the Linux kernel before 4.12 does not properly track an allocated nid, which allows local users to cause a denial of service (race condition) or possibly have unspecified other impact via concurrent threads.
References
- https://security-tracker.debian.org/tracker/CVE-2017-18249
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=30a61ddf8117c26ac5b295e1233eaa9629a94ca3
- https://github.com/torvalds/linux/commit/30a61ddf8117c26ac5b295e1233eaa9629a94ca3
- http://www.securitytracker.com/id/1041432
- https://usn.ubuntu.com/3932-1/
- https://usn.ubuntu.com/3932-2/