CVE-2023-52889 — NULL Pointer Dereference in Linux
Severity
5.5MEDIUMNVD
OSV8.8OSV7.1
EPSS
0.0%
top 97.39%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedAug 17
Latest updateJan 9
Description
In the Linux kernel, the following vulnerability has been resolved:
apparmor: Fix null pointer deref when receiving skb during sock creation
The panic below is observed when receiving ICMP packets with secmark set
while an ICMP raw socket is being created. SK_CTX(sk)->label is updated
in apparmor_socket_post_create(), but the packet is delivered to the
socket before that, causing the null pointer dereference.
Drop the packet if label context is not set.
BUG: kernel NULL pointer dereference, a…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6