CVE-2021-47559

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.

The following products are affected by CVE-2021-47559 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2021-47559.

URL	Resource
https://git.kernel.org/stable/c/587acad41f1bc48e16f42bb2aca63bf323380be8
https://git.kernel.org/stable/c/bb851d0fb02547d03cd40106b5f2391c4fed6ed1
https://git.kernel.org/stable/c/c94cbd262b6aa3b54d73a1ed1f9c0d19df57f4ff
https://lore.kernel.org/linux-cve-announce/2024052450-CVE-2021-47559-9909@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47559
https://www.cve.org/CVERecord?id=CVE-2021-47559