CVE-2024-57940
Description
In the Linux kernel, the following vulnerability has been resolved: exfat: fix the infinite loop in exfat_readdir() If the file system is corrupted so that a cluster is linked to itself in the cluster chain, and there is an unused directory entry in the cluster, 'dentry' will not be incremented, causing condition 'dentry < max_dentries' unable to prevent an infinite loop. This infinite loop causes s_lock not to be released, and other tasks will hang, such as exfat_sync_fs(). This commit stops traversing the cluster chain when there is unused directory entry in the cluster to avoid this infinite loop.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2024-57940
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2024-57940.html
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/fee873761bd978d077d8c55334b4966ac4cb7b59
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/dc1d7afceb982e8f666e70a582e6b5aa806de063
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/d9ea94f5cd117d56e573696d0045ab3044185a15
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/31beabd0f47f8c3ed9965ba861c9e5b252d4920a
Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2025:6966
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 6.1.128-1 |
| debian | bullseye | fixed | 5.10.234-1 |
| debian | forky | fixed | 6.12.10-1 |
| debian | sid | fixed | 6.12.10-1 |
| debian | trixie | fixed | 6.12.10-1 |
| linux-kernel | affected | 6.1.125 | |
| linux-kernel | 6.13 | affected | |
References
- https://access.redhat.com/errata/RHSA-2025:6966
- https://git.kernel.org/stable/c/28c21f0ac5293a4bf19b3e0e32005d6dd31a6c17
- https://git.kernel.org/stable/c/31beabd0f47f8c3ed9965ba861c9e5b252d4920a
- https://git.kernel.org/stable/c/d8cfbb8723bd3d3222f360227a1cc15227189ca6
- https://git.kernel.org/stable/c/d9ea94f5cd117d56e573696d0045ab3044185a15
- https://git.kernel.org/stable/c/dc1d7afceb982e8f666e70a582e6b5aa806de063
- https://git.kernel.org/stable/c/fee873761bd978d077d8c55334b4966ac4cb7b59
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-503939.html
- https://www.suse.com/security/cve/CVE-2024-57940.html
- https://security-tracker.debian.org/tracker/CVE-2024-57940
CWEs
CWE-835
Verify integrity in audit chain (admin only). AS-IS.