CVE-2017-18249
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 7.0 HIGHCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.31% probability · 23th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- linux/linux kernel · debian/debian linux
- Source
- cve@mitre.org
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=30a61ddf8117c26ac5b295e1233eaa9629a94ca3Patch, Third Party Advisory
- http://www.securitytracker.com/id/1041432Third Party Advisory, VDB Entry
- https://github.com/torvalds/linux/commit/30a61ddf8117c26ac5b295e1233eaa9629a94ca3Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/3932-1/
- https://usn.ubuntu.com/3932-2/
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=30a61ddf8117c26ac5b295e1233eaa9629a94ca3Patch, Third Party Advisory
- http://www.securitytracker.com/id/1041432Third Party Advisory, VDB Entry
- https://github.com/torvalds/linux/commit/30a61ddf8117c26ac5b295e1233eaa9629a94ca3Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/3932-1/
- https://usn.ubuntu.com/3932-2/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.