CVE-2022-48999

ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference

Description

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.

Category

7.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.11%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/cc3cd130ecfb8b0ae52e235e487bae3f16a24a32 patch
https://git.kernel.org/stable/c/0b5394229ebae09afc07aabccb5ffd705ffd250e patch
https://git.kernel.org/stable/c/25174d91e4a32a24204060d283bd5fa6d0ddf133 patch
https://git.kernel.org/stable/c/bb20a2ae241be846bc3c11ea4b3a3c69e41d51f2 patch
https://git.kernel.org/stable/c/61b91eb33a69c3be11b259c5ea484505cd79f883 patch

Frequently Asked Questions

What is the severity of CVE-2022-48999?
CVE-2022-48999 has been scored as a high severity vulnerability.
How to fix CVE-2022-48999?
To fix CVE-2022-48999, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-48999 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-48999 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-48999?
CVE-2022-48999 affects Linux Linux, Linux Linux.
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