CVE-2017-7533
Description
Race condition in the fsnotify implementation in the Linux kernel through 4.12.4 allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that leverages simultaneous execution of the inotify_handle_event and vfs_rename functions.
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 < 3.16.39 (Debian 8 x64) - 'inotfiy' Local Privilege Escalation
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 4.12.6-1 |
| debian | bullseye | fixed | 4.12.6-1 |
| debian | forky | fixed | 4.12.6-1 |
| debian | sid | fixed | 4.12.6-1 |
| debian | trixie | fixed | 4.12.6-1 |
| linux-kernel | affected | 3.16.47 |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=49d31c2f389acfe83417083e1208422b4091cd9e
- http://openwall.com/lists/oss-security/2017/08/03/2
- http://www.debian.org/security/2017/dsa-3927
- http://www.debian.org/security/2017/dsa-3945
- http://www.openwall.com/lists/oss-security/2019/06/27/7
- http://www.openwall.com/lists/oss-security/2019/06/28/1
- http://www.openwall.com/lists/oss-security/2019/06/28/2
- http://www.securityfocus.com/bid/100123
- http://www.securitytracker.com/id/1039075
- https://access.redhat.com/errata/RHSA-2017:2473
- https://access.redhat.com/errata/RHSA-2017:2585
- https://access.redhat.com/errata/RHSA-2017:2669
- https://access.redhat.com/errata/RHSA-2017:2770
- https://access.redhat.com/errata/RHSA-2017:2869
- https://bugzilla.redhat.com/show_bug.cgi?id=1468283
- https://github.com/torvalds/linux/commit/49d31c2f389acfe83417083e1208422b4091cd9e
- https://patchwork.kernel.org/patch/9755753/
- https://patchwork.kernel.org/patch/9755757/
- https://source.android.com/security/bulletin/2017-12-01
- https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg1408967.html
- https://www.suse.com/security/cve/CVE-2017-7533.html
- https://security-tracker.debian.org/tracker/CVE-2017-7533
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.