CVE-2015-8539
Description
The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2015-8539
Vendor advisory: cve@mitre.org — https://github.com/torvalds/linux/commit/096fe9eaea40a17e125569f9e657e34cdb6d73bd
Vendor advisory: cve@mitre.org — http://www.openwall.com/lists/oss-security/2015/12/09/1
Vendor advisory: cve@mitre.org — http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2015-8539.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 0 |
| debian | sid | fixed | 0 |
| debian | trixie | fixed | 0 |
| ubuntu | 12.04 | affected | |
| ubuntu | 14.04 | affected | |
| linux-kernel | affected | 4.4 | |
| linux-kernel | 4.4 | affected | |
References
- https://www.suse.com/security/cve/CVE-2015-8539.html
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00008.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00018.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00019.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00022.html
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00034.html
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html
- http://www.openwall.com/lists/oss-security/2015/12/09/1
- https://access.redhat.com/errata/RHSA-2018:0151
- https://access.redhat.com/errata/RHSA-2018:0152
- https://access.redhat.com/errata/RHSA-2018:0181
- https://bugzilla.redhat.com/show_bug.cgi?id=1284450
- https://github.com/torvalds/linux/commit/096fe9eaea40a17e125569f9e657e34cdb6d73bd
- https://usn.ubuntu.com/3798-1/
- https://usn.ubuntu.com/3798-2/
CWEs
CWE-269
Verify integrity in audit chain (admin only). AS-IS.