CVE-2016-10318
Description
A missing authorization check in the fscrypt_process_policy function in fs/crypto/policy.c in the ext4 and f2fs filesystem encryption support in the Linux kernel before 4.7.4 allows a user to assign an encryption policy to a directory owned by a different user, potentially creating a denial of service.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2016-10318
Vendor advisory: cve@mitre.org — https://github.com/torvalds/linux/commit/163ae1c6ad6299b19e22b4a35d5ab24a89791a98
Vendor advisory: cve@mitre.org — http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.4
Vendor advisory: cve@mitre.org — http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=163ae1c6ad6299b19e22b4a35d5ab24a89791a98
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 4.7.4-1 |
| debian | bullseye | fixed | 4.7.4-1 |
| debian | forky | fixed | 4.7.4-1 |
| debian | sid | fixed | 4.7.4-1 |
| debian | trixie | fixed | 4.7.4-1 |
| linux-kernel | affected | |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=163ae1c6ad6299b19e22b4a35d5ab24a89791a98
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.4
- http://www.securityfocus.com/bid/97404
- https://github.com/torvalds/linux/commit/163ae1c6ad6299b19e22b4a35d5ab24a89791a98
- https://security-tracker.debian.org/tracker/CVE-2016-10318
CWEs
CWE-264
Verify integrity in audit chain (admin only). AS-IS.