CVE-2022-48999

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2024-10-21. NVD baseline CVSS 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

October 21, 2024

Last Modified

August 5, 2026

Advisory Details (5)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/61b91eb33a69c3be11b259c5ea484505cd79f883
generic

ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bb20a2ae241be846bc3c11ea4b3a3c69e41d51f2
generic

ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/25174d91e4a32a24204060d283bd5fa6d0ddf133
generic

ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0b5394229ebae09afc07aabccb5ffd705ffd250e
generic

ipv4: Handle attempt to delete multipath route when fib_info contains an nh reference - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cc3cd130ecfb8b0ae52e235e487bae3f16a24a32

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 5.4.226—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 52× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 127 total refreshes for this CVE.

  1. 2026-08-07 16:24 UTCEPSS rescore
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  1. 2026-07-23 02:16 UTCEG score recompute
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Frequently asked(5)

What is CVE-2022-48999?
CVE-2022-48999 is a high vulnerability published on October 21, 2024. 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 fibnhmatch: fibnhmatch+0xf98/0x1130 linux-6.0-rc7/net/ipv4/fib_semantics.c:961…
When was CVE-2022-48999 disclosed?
CVE-2022-48999 was first published in the National Vulnerability Database on October 21, 2024, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-48999 actively exploited?
CVE-2022-48999 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 83.1% of all scored CVEs.
What is the CVSS score of CVE-2022-48999?
CVE-2022-48999 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2022-48999?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-48999, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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