CVE-2022-49085

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-02-27. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: 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:

drbd: Fix five use after free bugs in get_initial_state

In get_initial_state, it calls notify_initial_state_done(skb,..) if cb->args[5]==1. If genlmsg_put() failed in notify_initial_state_done(), the skb will be freed by nlmsg_free(skb). Then get_initial_state will goto out and the freed skb will be used by return value skb->len, which is a uaf bug.

What's worse, the same problem goes even further: skb can also be freed in the notify_*_state_change -> notify_*_state calls below. Thus 4 additional uaf bugs happened.

My patch lets the problem callee functions: notify_initial_state_done and notify_*_state_change return an error code if errors happen. So that the error codes could be propagated and the uaf bugs can be avoid.

v2 reports a compilation warning. This v3 fixed this warning and built successfully in my local environment with no additional warnings. v2: https://lore.kernel.org/patchwork/patch/1435218/

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

February 26, 2025

Last Modified

August 5, 2026

Advisory Details (9)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

drbd: Fix five use after free bugs in get_initial_state - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/aadb22ba2f656581b2f733deb3a467c48cc618f6
generic

drbd: Fix five use after free bugs in get_initial_state - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/226e993c39405292781bfcf4b039a8db56aab362
generic

drbd: Fix five use after free bugs in get_initial_state - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/de63e74da2333b4068bb79983e632db730fea97e
generic

drbd: Fix five use after free bugs in get_initial_state - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a972c768723359ec995579902473028fe3cd64b1
generic

drbd: Fix five use after free bugs in get_initial_state - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/594205b4936771a250f9d141e7e0fff21c3dd2d9
generic

drbd: Fix five use after free bugs in get_initial_state - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b6a4055036eed1f5e239ce3d8b0db1ce38bba447
generic

drbd: Fix five use after free bugs in get_initial_state - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/188fe6b26765edbad4055611c0f788b6870f4024
generic

drbd: Fix five use after free bugs in get_initial_state - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dcf6be17b5c53b741898d2223b23e66d682de300
generic

drbd: Fix five use after free bugs in get_initial_state - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0489700bfeb1e53eb2039c2291c67e71b0b40103

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 4.9.311—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 10× in last 7d / 48× 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 114 total refreshes for this CVE.

  1. 2026-08-07 16:24 UTCEPSS rescore
  2. 2026-08-06 13:44 UTCEPSS rescore
  3. 2026-08-05 19:15 UTCEPSS rescore
  4. 2026-08-05 09:35 UTCEG score recompute
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Frequently asked(5)

What is CVE-2022-49085?
CVE-2022-49085 is a high vulnerability published on February 26, 2025. In the Linux kernel, the following vulnerability has been resolved: drbd: Fix five use after free bugs in getinitialstate In getinitialstate, it calls notifyinitialstate_done(skb,..) if cb->args[5]==1. If genlmsgput() failed in notifyinitialstatedone(), the skb will be freed by nlmsg_free(skb).…
When was CVE-2022-49085 disclosed?
CVE-2022-49085 was first published in the National Vulnerability Database on February 26, 2025, 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-2022-49085 actively exploited?
CVE-2022-49085 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 79.9% of all scored CVEs.
What is the CVSS score of CVE-2022-49085?
CVE-2022-49085 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2022-49085?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-49085, 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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