cve-2021-47559
Vulnerability from cvelistv5
Published
2024-05-24 15:12
Modified
2024-12-19 07:44
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net/smc: Fix NULL pointer dereferencing in smc_vlan_by_tcpsk() Coverity reports a possible NULL dereferencing problem: in smc_vlan_by_tcpsk(): 6. returned_null: netdev_lower_get_next returns NULL (checked 29 out of 30 times). 7. var_assigned: Assigning: ndev = NULL return value from netdev_lower_get_next. 1623 ndev = (struct net_device *)netdev_lower_get_next(ndev, &lower); CID 1468509 (#1 of 1): Dereference null return value (NULL_RETURNS) 8. dereference: Dereferencing a pointer that might be NULL ndev when calling is_vlan_dev. 1624 if (is_vlan_dev(ndev)) { Remove the manual implementation and use netdev_walk_all_lower_dev() to iterate over the lower devices. While on it remove an obsolete function parameter comment.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/587acad41f1bc48e16f42bb2aca63bf323380be8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bb851d0fb02547d03cd40106b5f2391c4fed6ed1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c94cbd262b6aa3b54d73a1ed1f9c0d19df57f4ffPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/587acad41f1bc48e16f42bb2aca63bf323380be8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/bb851d0fb02547d03cd40106b5f2391c4fed6ed1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c94cbd262b6aa3b54d73a1ed1f9c0d19df57f4ffPatch
Impacted products
Vendor Product Version
Linux Linux Version: cb9d43f6775457cac75544bc4197f26ac2b6f294
Version: cb9d43f6775457cac75544bc4197f26ac2b6f294
Version: cb9d43f6775457cac75544bc4197f26ac2b6f294
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   Linux Linux Version: 4.18
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