CVE-2018-12232
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2018-12232
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-12232.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2018-12232
- Downstream
- Related
- Published
- 2018-06-12T12:29:00Z
- Modified
- 2025-08-09T20:01:26Z
- Severity
-
- 5.9 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sockclose and sockfssetattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash.
- References
-
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6d8c50dcb029872b298eea68cc6209c866fd3e14
- http://www.securityfocus.com/bid/104453
- https://access.redhat.com/errata/RHSA-2018:2948
- https://github.com/torvalds/linux/commit/6d8c50dcb029872b298eea68cc6209c866fd3e14
- https://lkml.org/lkml/2018/6/5/14
- https://patchwork.ozlabs.org/patch/926519/
- https://usn.ubuntu.com/3752-1/
- https://usn.ubuntu.com/3752-2/
- https://usn.ubuntu.com/3752-3/