SB20260928336 - Resource exhaustion in Linux kernel ipv4

Description

This security bulletin contains information about 1 vulnerability.

1) Resource exhaustion (CVE-ID: CVE-2026-97598)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in fib_empty_table() in IPv4 FIB rules when adding an IPv4 rule with automatic table assignment. A local user can populate table IDs and add a table-0 rule to cause a denial of service.

Only the IPv4 automatic table-assignment path is affected.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/2c29c053a6627dc4f12fcfe6b4860bcd9e5d7503
• https://git.kernel.org/stable/c/bc8d01d856db106f284b19961af6112e10c3e3b4
• https://git.kernel.org/stable/c/efdfb1e27a3328085b79540dfe781d537b576ea1
• https://git.kernel.org/stable/c/fe9a906d2bff2d2707bafd6353b5e032a42aeb35