CVE-2025-38717
net: kcm: Fix race condition in kcm_unattach()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: net: kcm: Fix race condition in kcm_unattach() syzbot found a race condition when kcm_unattach(psock) and kcm_release(kcm) are executed at the same time. kcm_unattach() is missing a check of the flag kcm->tx_stopped before calling queue_work(). If the kcm has a reserved psock, kcm_unattach() might get executed between cancel_work_sync() and unreserve_psock() in kcm_release(), requeuing kcm->tx_work right before kcm gets freed in kcm_done(). Remove kcm->tx_stopped and replace it by the less error-prone disable_work_sync().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 4, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < c0bffbc92a1ca3960fb9cdb8e9f75a68468eb308 ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < 7275dc3bb8f91b23125ff3f47b6529935cf46152 ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < 798733ee5d5788b12e8a52db1519abc17e826f69 ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 < 52565a935213cd6a8662ddb8efe5b4219343a25d
Linux / Linux
4.6
References
git.kernel.org: https://git.kernel.org/stable/c/c0bffbc92a1ca3960fb9cdb8e9f75a68468eb308 git.kernel.org: https://git.kernel.org/stable/c/7275dc3bb8f91b23125ff3f47b6529935cf46152 git.kernel.org: https://git.kernel.org/stable/c/798733ee5d5788b12e8a52db1519abc17e826f69 git.kernel.org: https://git.kernel.org/stable/c/52565a935213cd6a8662ddb8efe5b4219343a25d