CVE-2024-40972
Description
In the Linux kernel, the following vulnerability has been resolved: ext4: do not create EA inode under buffer lock ext4_xattr_set_entry() creates new EA inodes while holding buffer lock on the external xattr block. This is problematic as it nests all the allocation locking (which acquires locks on other buffers) under the buffer lock. This can even deadlock when the filesystem is corrupted and e.g. quota file is setup to contain xattr block as data block. Move the allocation of EA inode out of ext4_xattr_set_entry() into the callers.
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
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
AlmaLinux Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | kernel-64k-devel-matched-5.14.0-427.42.1.el9_4.aarch64.rpm |
| 8 | Fixed | kernel-abi-stablelists-4.18.0-553.22.1.el8_10.noarch.rpm |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 6.9.7-1 |
| sid | Fixed | 6.9.7-1 |
| forky | Fixed | 6.9.7-1 |
| bullseye | Fixed | 6.1.119-1~deb11u1 |
| bookworm | Fixed | 6.1.112-1 |
Red Hat Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
| 8 | Fixed | — |
Rocky Linux Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
| 8 | Fixed | — |
References
- https://access.redhat.com/errata/RHSA-2024:8617
- https://errata.rockylinux.org/RLSA-2024:7000
- https://errata.rockylinux.org/RLSA-2024:7001
- https://www.suse.com/security/cve/CVE-2024-40972.html
- https://errata.rockylinux.org/RLSA-2024:8617
- https://security-tracker.debian.org/tracker/CVE-2024-40972
- https://access.redhat.com/errata/RHSA-2024:7000
- https://bugzilla.redhat.com/2258012
- https://bugzilla.redhat.com/2258013
- https://bugzilla.redhat.com/2260038
- https://bugzilla.redhat.com/2265799
- https://bugzilla.redhat.com/2265838
- https://bugzilla.redhat.com/2266358
- https://bugzilla.redhat.com/2266750
- https://bugzilla.redhat.com/2267036
- https://bugzilla.redhat.com/2267041
- https://bugzilla.redhat.com/2267795
- https://bugzilla.redhat.com/2267916
- https://bugzilla.redhat.com/2267925
- https://bugzilla.redhat.com/2268295
- https://bugzilla.redhat.com/2270103
- https://bugzilla.redhat.com/2271648
- https://bugzilla.redhat.com/2271796
- https://bugzilla.redhat.com/2272793
- https://bugzilla.redhat.com/2273141
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.