CVE-2015-8839
medium
CVSS v3
5.1
CVSS v4 NEW
—
VIR risk
5.1
Description
Multiple race conditions in the ext4 filesystem implementation in the Linux kernel before 4.5 allow local users to cause a denial of service (disk corruption) by writing to a page that is associated with a different user's file after unsynchronized hole punching and page-fault handling.
Predictions
Exploit likelihood
51%
Patch ETA
—
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.
OS impact
Linux kernel Affected 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 4.5 | Affected | — |
| — | Affected | — |
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Ubuntu Affected 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 16.04 | Affected | — |
| 14.04 | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 4.5.1-1 |
| sid | Fixed | 4.5.1-1 |
| forky | Fixed | 4.5.1-1 |
| bullseye | Fixed | 4.5.1-1 |
| bookworm | Fixed | 4.5.1-1 |
References
- https://www.suse.com/security/cve/CVE-2015-8839.html
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea3d7209ca01da209cda6f0dea8be9cc4b7a933b
- http://www.openwall.com/lists/oss-security/2016/04/01/4
- http://www.securityfocus.com/bid/85798
- http://www.securitytracker.com/id/1035455
- http://www.ubuntu.com/usn/USN-3005-1
- http://www.ubuntu.com/usn/USN-3006-1
- http://www.ubuntu.com/usn/USN-3007-1
- https://access.redhat.com/errata/RHSA-2017:1842
- https://access.redhat.com/errata/RHSA-2017:2077
- https://access.redhat.com/errata/RHSA-2017:2669
- https://bugzilla.redhat.com/show_bug.cgi?id=1323577
- https://github.com/torvalds/linux/commit/ea3d7209ca01da209cda6f0dea8be9cc4b7a933b
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
- https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
- https://security-tracker.debian.org/tracker/CVE-2015-8839
CWEs
CWE-362
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.