CVE-2017-7495
Description
fs/ext4/inode.c in the Linux kernel before 4.6.2, when ext4 data=ordered mode is used, mishandles a needs-flushing-before-commit list, which allows local users to obtain sensitive information from other users' files in opportunistic circumstances by waiting for a hardware reset, creating a new file, making write system calls, and reading this file.
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.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 4.6.2-1 |
| debian | bullseye | fixed | 4.6.2-1 |
| debian | forky | fixed | 4.6.2-1 |
| debian | sid | fixed | 4.6.2-1 |
| debian | trixie | fixed | 4.6.2-1 |
| linux-kernel | affected | |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=06bd3c36a733ac27962fea7d6f47168841376824
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.2
- http://www.openwall.com/lists/oss-security/2017/05/15/2
- http://www.securityfocus.com/bid/98491
- https://bugzilla.redhat.com/show_bug.cgi?id=1450261
- https://github.com/torvalds/linux/commit/06bd3c36a733ac27962fea7d6f47168841376824
- https://source.android.com/security/bulletin/2017-09-01
- https://www.suse.com/security/cve/CVE-2017-7495.html
- https://security-tracker.debian.org/tracker/CVE-2017-7495
CWEs
CWE-200
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.