SB20260528227 - Reachable assertion in Linux kernel core
Published: May 28, 2026
Security Bulletin ID
SB20260528227
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) Reachable assertion (CVE-ID: CVE-2026-45847)
CWE-ID: CWE-617 - Reachable Assertion
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/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 handling of an assertion in the forward path array when processing a sufficiently long forward path. A local user can configure networking state to build a sufficiently long forward path to cause a denial of service.
Recent support for IPIP tunnels increases the likelihood of reaching the vulnerable condition.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/008e7a7c293b30bc43e4368dac6ea3808b75a572
- https://git.kernel.org/stable/c/50422613185d505201167e8bdd2f2700790d5db6
- https://git.kernel.org/stable/c/548244c2f542aa0ad49453e9306e715a3877bc44
- https://git.kernel.org/stable/c/9464ca7a6e56ad1ebf48b2ad5c16871edfad10c6
- https://git.kernel.org/stable/c/959ea349c7e2d4edf07b6838ca7e59345fe61a08
- https://git.kernel.org/stable/c/a78d055ba7c31103ad02f8eceb0c452e154d2660
- https://git.kernel.org/stable/c/dcf9b3c90e5560339649d088836529883fb509f3