CVE-2014-9322
Description
arch/x86/kernel/entry_64.S in the Linux kernel before 3.17.5 does not properly handle faults associated with the Stack Segment (SS) segment register, which allows local users to gain privileges by triggering an IRET instruction that leads to access to a GS Base address from the wrong space.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Linux Kernel 3.17.5 - IRET Instruction #SS Fault Handling Crash (PoC)
Linux Kernel - 'BadIRET' Local Privilege Escalation
OS impact
Linux kernel Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | 3.2.65 |
Red Hat Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| 5.6 | Affected | — |
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| 10 | Affected | — |
Ubuntu Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| 10.04 | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 3.16.7-ckt2-1 |
| sid | Fixed | 3.16.7-ckt2-1 |
| forky | Fixed | 3.16.7-ckt2-1 |
| bullseye | Fixed | 3.16.7-ckt2-1 |
| bookworm | Fixed | 3.16.7-ckt2-1 |
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6f442be2fb22be02cafa606f1769fa1e6f894441
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html
- http://marc.info/?l=bugtraq&m=142722450701342&w=2
- http://marc.info/?l=bugtraq&m=142722544401658&w=2
- http://osvdb.org/show/osvdb/115919
- http://rhn.redhat.com/errata/RHSA-2014-1998.html
- http://rhn.redhat.com/errata/RHSA-2014-2008.html
- http://rhn.redhat.com/errata/RHSA-2014-2028.html
- http://rhn.redhat.com/errata/RHSA-2014-2031.html
- http://rhn.redhat.com/errata/RHSA-2015-0009.html
- http://secunia.com/advisories/62336
- http://source.android.com/security/bulletin/2016-04-02.html
- http://www.exploit-db.com/exploits/36266
- http://www.openwall.com/lists/oss-security/2014/12/15/6
- http://www.ubuntu.com/usn/USN-2491-1
- http://www.zerodayinitiative.com/advisories/ZDI-16-170
- https://bugzilla.redhat.com/show_bug.cgi?id=1172806
- https://github.com/torvalds/linux/commit/6f442be2fb22be02cafa606f1769fa1e6f894441
- https://help.joyent.com/entries/98788667-Security-Advisory-ZDI-CAN-3263-ZDI-CAN-3284-and-ZDI-CAN-3364-Vulnerabilities
- https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.17.5
- https://security-tracker.debian.org/tracker/CVE-2014-9322
CWEs
CWE-269
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.