SB20260527111 - Improper handling of exceptional conditions in Linux kernel kvm svm
Published: May 27, 2026
Security Bulletin ID
SB20260527111
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) Improper handling of exceptional conditions (CVE-ID: CVE-2026-46082)
CWE-ID: CWE-755 - Improper Handling of Exceptional Conditions
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 improper exception handling in KVM SVM instruction emulation when processing the INVLPGA instruction with EFER.SVME cleared. A local user can execute the INVLPGA instruction in a guest context to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/3ac9d4241d205f5d0df06358349ca718ebb0fa12
- https://git.kernel.org/stable/c/643125b66ffc1147c66616b749475ba9efb15971
- https://git.kernel.org/stable/c/c15392ed9e49c1a16b4d3a3ccf1b3bf2318a6c28
- https://git.kernel.org/stable/c/d99df02ff427f461102230f9c5b90a6c64ee8e23
- https://git.kernel.org/stable/c/ee24928ecd85db4b68ed111e91fef36af0ca37b0