CVE-2026-74614
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
vsock/virtio: read virtqueues under worker locks
Commit bd50c5dc182b ("vsock/virtio: add support for device suspend/resume") made the *_run flags transition from false to true when restore installs replacement virtqueues. The RX, TX and event workers read their virtqueue before locking and checking the corresponding flag, so a worker delayed across freeze and restore can observe the replacement queue's running state while retaining a pointer to the deleted queue.
Read each virtqueue under its mutex after checking the run flag, keeping the pointer and state in the same queue generation.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 762c251c7f5c4ee5bef71460c6e822ed293fd69f < 941329ce14c5f481223a10d1d4c8b57ea7f3048a | affected |
| Linux | Linux | bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c < 29dd10583bf9d2744cd84b862e4257c0a5699570 | affected |
| Linux | Linux | bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c < a1fb0c5b8a7c2753758aeced40971f99449dde0c | affected |
| Linux | Linux | bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c < eae099c764c7ebdb842eb1f638913e310bdd6513 | affected |
| Linux | Linux | bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c < bd43a7ec668be428265b3209eb43647aedcf720a | affected |
| Linux | Linux | bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c < 1cecb4202afdbeddcf29d59baf596ac6ab753f7f | affected |
| Linux | Linux | bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c < ebac8f6b1ef0e9278afe204b8692a7479988dace | affected |
| Linux | Linux | 5.15.138 < 5.15.216 | affected |
| Linux | Linux | 5.19 | affected |
| Linux | Linux | 0 < 5.19 | unaffected |
| Linux | Linux | 5.15.216 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.183 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.152 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.104 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.45 <= 6.18.* | unaffected |
| Linux | Linux | 7.1.9 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/941329ce14c5f481223a10d1d4c8b57ea7f3048a
- https://git.kernel.org/stable/c/29dd10583bf9d2744cd84b862e4257c0a5699570
- https://git.kernel.org/stable/c/a1fb0c5b8a7c2753758aeced40971f99449dde0c
- https://git.kernel.org/stable/c/eae099c764c7ebdb842eb1f638913e310bdd6513
- https://git.kernel.org/stable/c/bd43a7ec668be428265b3209eb43647aedcf720a
- https://git.kernel.org/stable/c/1cecb4202afdbeddcf29d59baf596ac6ab753f7f
- https://git.kernel.org/stable/c/ebac8f6b1ef0e9278afe204b8692a7479988dace
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