Signed to Unsigned Conversion Error in Linux kernel - CVE-2026-97990
Published: September 28, 2026
Vulnerability identifier: #VU152477
CSH Severity: Low
CVSS v4: 5.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97990
CWE-ID: CWE-195
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive information and cause a denial of service.
The vulnerability exists due to improper handling of signed return values in the vdpa_sim_net TX/RX processing path when handling a failed TX pull. A local user can trigger processing of a failed TX pull to disclose sensitive information and cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-97990
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3