Description
In the Linux kernel, the following vulnerability has been resolved: watchdog: sc520_wdt: Fix possible use-after-free in wdt_turnoff() This module's remove path calls del_timer(). However, that function does not wait until the timer handler finishes. This means that the timer handler may still be running after the driver's remove function has finished, which would result in a use-after-free. Fix by calling del_timer_sync(), which makes sure the timer handler has finished, and unable to re-schedule itself.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 0015581a79bbf8e521f85dddb7d3e4a66b9f51d4affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < b4565a8a2d6bffb05bfbec11399d261ec16fe373affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 2aef07017fae21c3d8acea9656b10e3b9c0f1e04affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 522e75ed63f67e815d4ec0deace67df22d9ce78eaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 7c56c5508dc20a6b133bc669fc34327a6711c24caffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < a173e3b62cf6dd3c4a0a10c8a82eedfcae81a566affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < b3c41ea5bc34d8c7b19e230d80e0e555c6f5057daffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < f0feab82f6a0323f54d85e8b512a2be64f83648aaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 90b7c141132244e8e49a34a4c1e445cce33e07f4affected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected4.4.276 to ≤ 4.4.*unaffected4.9.276 to ≤ 4.9.*unaffected4.14.240 to ≤ 4.14.*unaffected4.19.198 to ≤ 4.19.*unaffected5.4.134 to ≤ 5.4.*unaffected5.10.52 to ≤ 5.10.*unaffected5.12.19 to ≤ 5.12.*unaffected5.13.4 to ≤ 5.13.*unaffected5.14 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/0015581a79bbf8e521f85dddb7d3e4a66b9f51d4 ↗
- https://git.kernel.org/stable/c/b4565a8a2d6bffb05bfbec11399d261ec16fe373 ↗
- https://git.kernel.org/stable/c/2aef07017fae21c3d8acea9656b10e3b9c0f1e04 ↗
- https://git.kernel.org/stable/c/522e75ed63f67e815d4ec0deace67df22d9ce78e ↗
- https://git.kernel.org/stable/c/7c56c5508dc20a6b133bc669fc34327a6711c24c ↗
- https://git.kernel.org/stable/c/a173e3b62cf6dd3c4a0a10c8a82eedfcae81a566 ↗
- https://git.kernel.org/stable/c/b3c41ea5bc34d8c7b19e230d80e0e555c6f5057d ↗
- https://git.kernel.org/stable/c/f0feab82f6a0323f54d85e8b512a2be64f83648a ↗
- https://git.kernel.org/stable/c/90b7c141132244e8e49a34a4c1e445cce33e07f4 ↗