CVE-2022-48999: Linux Kernel

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference Gwangun Jung reported a slab-out-of-bounds access in fib_nh_match: fib_nh_match+0xf98/0x1130 linux-6.0-rc7/net/ipv4/fib_semantics.c:961 fib_table_delete+0x5f3/0xa40 linux-6.0-rc7/net/ipv4/fib_trie.c:1753 inet_rtm_delroute+0x2b3/0x380 linux-6.0-rc7/net/ipv4/fib_frontend.c:874 Separate nexthop objects are mutually exclusive with the legacy multipath spec. Fix fib_nh_match to return if the config for the to be deleted route contains a multipath spec while the fib_info is using a nexthop object.

Affected products

• Linux Linux Kernel: from 5.3, before 5.4.226 (fixed in 5.4.226); from 5.5, before 5.10.158 (fixed in 5.10.158); from 5.11, before 5.15.82 (fixed in 5.15.82); from 5.16, before 6.0.12 (fixed in 6.0.12)

Published 2024-10-21. Last modified 2026-08-04.