SB20260507261 - NULL pointer dereference in Linux kernel nfc s3fwrn5 driver
Published: May 7, 2026
Security Bulletin ID
SB20260507261
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2026-43098)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 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
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in s3fwrn82_uart_read() when processing received uart data. A local user can trigger allocation failure during frame reception to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/09822d3d6f68a0cdc4626e0c507324a4927f55a9
- https://git.kernel.org/stable/c/5c14a19d5b1645cce1cb1252833d70b23635b632
- https://git.kernel.org/stable/c/6d931680a9851481c3243689488eafed08eeff71
- https://git.kernel.org/stable/c/7c31f7a599cf00fad3c204092a91a924126c67e4
- https://git.kernel.org/stable/c/d8c2aa3c4a1ec530a485e46a1c4f1a118bb00156