CVE-2024-54683
- Source
- https://cve.org/CVERecord?id=CVE-2024-54683
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-54683.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-54683
- Downstream
- Related
- Published
- 2025-01-11T12:29:54Z
- Modified
- 2026-08-12T03:30:09Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- netfilter: IDLETIMER: Fix for possible ABBA deadlock
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
netfilter: IDLETIMER: Fix for possible ABBA deadlock
Deletion of the last rule referencing a given idletimer may happen at the same time as a read of its file in sysfs:
| ====================================================== | WARNING: possible circular locking dependency detected
6.12.0-rc7-01692-g5e9a28f41134-dirty #594 Not tainted iptables/3303 is trying to acquire lock: ffff8881057e04b8 (kn->active#48){++++}-{0:0}, at: __kernfs_remove+0x20 but task is already holding lock: ffffffffa0249068 (list_mutex){+.+.}-{3:3}, at: idletimer_tg_destroy_v] which lock already depends on the new lock. A simple reproducer is:
| #!/bin/bash | | while true; do | iptables -A INPUT -i foo -j IDLETIMER --timeout 10 --label "testme" | iptables -D INPUT -i foo -j IDLETIMER --timeout 10 --label "testme" | done & | while true; do | cat /sys/class/xt_idletimer/timers/testme >/dev/null | done
Avoid this by freeing list_mutex right after deleting the element from the list, then continuing with the teardown.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/54xxx/CVE-2024-54683.json" }- References
-
- https://git.kernel.org/stable/c/45fe76573a2557f632e248cc141342233f422b9a
- https://git.kernel.org/stable/c/8c2c8445cda8f59c38dec7dc10509bcb23ae26a0
- https://git.kernel.org/stable/c/f36b01994d68ffc253c8296e2228dfe6e6431c03
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/54xxx/CVE-2024-54683.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-54683
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git