Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: media: v4l2-async: avoid deleting unlinked ASC entry on link error v4l2_async_match_notify() creates ancillary media links before adding asc->asc_subdev_entry to sd->asc_list. If ancillary link creation fails, the function jumps to err_call_unbind while asc_subdev_entry has not been linked yet. Async connections are zero-allocated, so the list entry still has NULL next and prev pointers on this path. Calling list_del() on it can therefore dereference NULL instead of returning the original link creation error. Do not delete asc_subdev_entry from err_call_unbind. There is no list insertion to undo on this path; the bound callback and sub-device registration are the operations that need to be rolled back.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 28a1295795d85a25f2e7dd391c43969e95fcb341 before d273571e531405426983c6a45ec635c7d0415eed; affected 28a1295795d85a25f2e7dd391c43969e95fcb341 before caac13f518d83974e9884d1eeda3d4cc3bb92978; affected 28a1295795d85a25f2e7dd391c43969e95fcb341 before 3345746e0957bce6c53644838e4955710a82a962; affected 28a1295795d85a25f2e7dd391c43969e95fcb341 before a57d94026cb4fd7b3d258f0db2ad391cbccfaba5; affected 28a1295795d85a25f2e7dd391c43969e95fcb341 before 47d82b605351c0e04f6365e42c8ffe2fcfdba615 |
| Linux / Linux | affected 6.6; unaffected 0 before 6.6; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.51 through 6.18.*; unaffected 7.2.5 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/d273571e531405426983c6a45ec635c7d0415eed
- https://git.kernel.org/stable/c/caac13f518d83974e9884d1eeda3d4cc3bb92978
- https://git.kernel.org/stable/c/3345746e0957bce6c53644838e4955710a82a962
- https://git.kernel.org/stable/c/a57d94026cb4fd7b3d258f0db2ad391cbccfaba5
- https://git.kernel.org/stable/c/47d82b605351c0e04f6365e42c8ffe2fcfdba615