NULL pointer dereference in Linux kernel - CVE-2022-49201
Published: February 26, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104644
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-2022-49201
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 __ibmvnic_open(), ibmvnic_cleanup(), ibmvnic_tx_scrq_clean_buffer(), ibmvnic_xmit() and netif_carrier_off() functions in drivers/net/ethernet/ibm/ibmvnic.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2022-49201
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/1bd58abf595b6cf1ba6dd47ec887c4c009155fc9
- https://git.kernel.org/stable/c/4219196d1f662cb10a462eb9e076633a3fc31a15
- https://git.kernel.org/stable/c/475f9cce98b63bc145b4efa66fa51175d4cb345f
- https://git.kernel.org/stable/c/8507c6ade73cdbbbda5c3d31d67f52f2e1cf03fe
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.2