CVE-2022-48999: ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference
Vulnerability summary
CVE-2022-48999 is a high (CVSS 7.1) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.1% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 8 · Related 8Timeline
- 21-10-2024PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- NVDNIST7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS trend
Probability
0.26%
Chance of exploitation in the next 30 days
Percentile
16%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.26% on 22-09-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu109 products
- linux< 5.4.0-144.161 | < 5.15.0-67.74
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.4.0-1097.105 | < 5.15.0-1031.35
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ 493ced1ac47c48bb86d9d4e8e87df8592be85a0e, < cc3cd130ecfb8b0ae52e235e487bae3f16a24a32 | ≥ 493ced1ac47c48bb86d9d4e8e87df8592be85a0e, < 0b5394229ebae09afc07aabccb5ffd705ffd250e | ≥ 493ced1ac47c48bb86d9d4e8e87df8592be85a0e, < 25174d91e4a32a24204060d283bd5fa6d0ddf133 | ≥ 493ced1ac47c48bb86d9d4e8e87df8592be85a0e, < bb20a2ae241be846bc3c11ea4b3a3c69e41d51f2 | ≥ 493ced1ac47c48bb86d9d4e8e87df8592be85a0e, < 61b91eb33a69c3be11b259c5ea484505cd79f883 | 5.3
- linux_kernel≥ 5.3, < 5.4.226 | ≥ 5.5, < 5.10.158 | ≥ 5.11, < 5.15.82 | ≥ 5.16, < 6.0.12
Debian1 product
- linux< 6.0.12-1
3 vendors · 112 products
