Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: Drivers: vmbus: Check for channel allocation before looking up relids relid2channel() assumes vmbus channel array to be allocated when called. However, in cases such as kdump/kexec, not all relids will be reset by the host. When the second kernel boots and if the guest receives a vmbus interrupt during vmbus driver initialization before vmbus_connect() is called, before it finishes, or if it fails, the vmbus interrupt service routine is called which in turn calls relid2channel() and can cause a null pointer dereference. Print a warning and error out in relid2channel() for a channel id that's invalid in the second kernel.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8b6a877c060ed6b86878fe66c7c6493a6054cf23 before 176c6b4889195fbe7016d9401175b48c5c9edf68; affected 8b6a877c060ed6b86878fe66c7c6493a6054cf23 before c373e49fbb87aa177819866ed9194ebc5414dfd6; affected 8b6a877c060ed6b86878fe66c7c6493a6054cf23 before 8c3f0ae5435fd20bb1e3a8308488aa6ac33151ee; affected 8b6a877c060ed6b86878fe66c7c6493a6054cf23 before a5c44f3446a0565139b7d8abc78f58b86c398123; affected 8b6a877c060ed6b86878fe66c7c6493a6054cf23 before 1eb65c8687316c65140b48fad27133d583178e15 |
| Linux / Linux | affected 5.8; unaffected 0 before 5.8; unaffected 5.10.178 through 5.10.*; unaffected 5.15.107 through 5.15.*; unaffected 6.1.24 through 6.1.*; unaffected 6.2.11 through 6.2.*; unaffected 6.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/176c6b4889195fbe7016d9401175b48c5c9edf68
- https://git.kernel.org/stable/c/c373e49fbb87aa177819866ed9194ebc5414dfd6
- https://git.kernel.org/stable/c/8c3f0ae5435fd20bb1e3a8308488aa6ac33151ee
- https://git.kernel.org/stable/c/a5c44f3446a0565139b7d8abc78f58b86c398123
- https://git.kernel.org/stable/c/1eb65c8687316c65140b48fad27133d583178e15
ADP enrichment
No English description supplied.
No references supplied.