CVE-2022-49956

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-06-18. 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:

staging: rtl8712: fix use after free bugs

_Read/Write_MACREG callbacks are NULL so the read/write_macreg_hdl() functions don't do anything except free the "pcmd" pointer. It results in a use after free. Delete them.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
10%
KEV
Not listed

Published

June 18, 2025

Last Modified

August 5, 2026

Advisory Details (8)

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

staging: rtl8712: fix use after free bugs - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e230a4455ac3e9b112f0367d1b8e255e141afae0
generic

staging: rtl8712: fix use after free bugs - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dc02aaf950015850e7589696521c7fca767cea77
generic

staging: rtl8712: fix use after free bugs - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d0aac7146e96bf39e79c65087d21dfa02ef8db38
generic

staging: rtl8712: fix use after free bugs - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b1727def850904e4b8ba384043775672841663a1
generic

staging: rtl8712: fix use after free bugs - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9fd6170c5e2d0ccd027abe26f6f5ffc528e1bb27
generic

staging: rtl8712: fix use after free bugs - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7dce6b0ee7d78667d6c831ced957a08769973063
generic

staging: rtl8712: fix use after free bugs - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/376e15487fec837301d888068a3fcc82efb6171a
generic

staging: rtl8712: fix use after free bugs - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/19e3f69d19801940abc2ac37c169882769ed9770

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 4.9.328—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 / 50× 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 118 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 09:26 UTCEG score recompute
  5. 2026-08-05 09:25 UTCGHSA enrichment
  6. 2026-08-04 15:07 UTCEPSS rescore
  7. 2026-08-04 11:03 UTCEG score recompute
  8. 2026-08-04 11:03 UTCGHSA enrichment
  9. 2026-08-04 10:35 UTCEPSS rescore
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  11. 2026-08-04 09:43 UTCGHSA enrichment
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  22. 2026-07-24 03:11 UTCOSV refresh
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  25. 2026-07-23 02:16 UTCEG score recompute
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  1. 2026-07-22 23:04 UTCEG score recompute
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  28. 2026-07-06 22:34 UTCOSV refresh
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  55. 2026-06-18 17:51 UTCEPSS rescore
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  57. 2026-06-18 09:35 UTCOSV refresh
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Frequently asked(5)

What is CVE-2022-49956?
CVE-2022-49956 is a high vulnerability published on June 18, 2025. In the Linux kernel, the following vulnerability has been resolved: staging: rtl8712: fix use after free bugs Read/WriteMACREG callbacks are NULL so the read/writemacreghdl() functions don't do anything except free the "pcmd" pointer. It results in a use after free. Delete them.
When was CVE-2022-49956 disclosed?
CVE-2022-49956 was first published in the National Vulnerability Database on June 18, 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-2022-49956 actively exploited?
CVE-2022-49956 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 89.5% of all scored CVEs.
What is the CVSS score of CVE-2022-49956?
CVE-2022-49956 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2022-49956?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-49956, 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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