NULL pointer dereference in Linux kernel - CVE-2025-37953
Published: May 21, 2025
Vulnerability identifier: #VU109526
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-37953
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the htb_add_to_wait_tree(), htb_activate(), htb_qlen_notify(), htb_delete() and htb_change_class() functions in net/sched/sch_htb.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2025-37953
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/31ff70ad39485698cf779f2078132d80b57f6c07
- https://git.kernel.org/stable/c/3769478610135e82b262640252d90f6efb05be71
- https://git.kernel.org/stable/c/98cd7ed92753090a714f0802d4434314526fe61d
- https://git.kernel.org/stable/c/c4792b9e38d2f61b07eac72f10909fa76130314b
- https://git.kernel.org/stable/c/c928dd4f6bf0c25c72b11824a1e9ac9bd37296a0