CVE-2024-50260 - Linux Kernel Sock Map NULL Pointer Dereference

CVE ID : CVE-2024-50260
Published : Nov. 9, 2024, 11:15 a.m. | 24 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: sock_map: fix a NULL pointer dereference in sock_map_link_update_prog() The following race condition could trigger a NULL pointer dereference: sock_map_link_detach(): sock_map_link_update_prog(): mutex_lock(&sockmap_mutex); ... sockmap_link->map = NULL; mutex_unlock(&sockmap_mutex); mutex_lock(&sockmap_mutex); ... sock_map_prog_link_lookup(sockmap_link->map); mutex_unlock(&sockmap_mutex); Fix it by adding a NULL pointer check. In this specific case, it makes no sense to update a link which is being released.
Severity: 0.0 | NA
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