SB2026052833 - Integer overflow in Linux kernel rxrpc
Published: May 28, 2026
Security Bulletin ID
SB2026052833
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) Integer overflow (CVE-ID: CVE-2026-46039)
CWE-ID: CWE-190 - Integer overflow
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 integer overflow in rxgk_extract_token() when parsing the length of the ticket. A local user can supply specially crafted input to trigger the integer overflow and cause a denial of service.
Remediation
Install update from vendor's website.