CVE-2025-71234

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-02-18. 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:

wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add

The driver does not set hw->sta_data_size, which causes mac80211 to allocate insufficient space for driver private station data in __sta_info_alloc(). When rtl8xxxu_sta_add() accesses members of struct rtl8xxxu_sta_info through sta->drv_priv, this results in a slab-out-of-bounds write.

KASAN report on RISC-V (VisionFive 2) with RTL8192EU adapter:

BUG: KASAN: slab-out-of-bounds in rtl8xxxu_sta_add+0x31c/0x346 Write of size 8 at addr ffffffd6d3e9ae88 by task kworker/u16:0/12

Set hw->sta_data_size to sizeof(struct rtl8xxxu_sta_info) during probe, similar to how hw->vif_data_size is configured. This ensures mac80211 allocates sufficient space for the driver's per-station private data.

Tested on StarFive VisionFive 2 v1.2A board.

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
7%
KEV
Not listed

Published

February 18, 2026

Last Modified

July 30, 2026

Advisory Details (4)

Auto-updated Jul 31, 2026
No patch confirmed yet.
generic

wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9a0f3fa6ecd0c9c32dbc367a57482bbf7c7d25bf
generic

wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/86c946bcc00f6390ef65e9614ae60a9377e454f8
generic

wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5d810ba377eddee95d30766d360a14efbb3d1872
generic

wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxu_sta_add - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/116f7bd8160c6b37d1c6939385abf90f6f6ed2f5

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 7× 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.

  1. 2026-08-01 04:15 UTCEPSS rescore
  2. 2026-07-30 16:27 UTCEPSS rescore
  3. 2026-07-30 06:41 UTCEG score recompute
  4. 2026-07-30 06:41 UTCGHSA enrichment
  5. 2026-07-27 14:13 UTCEPSS rescore
  6. 2026-07-27 13:28 UTCEG score recompute
  7. 2026-07-27 13:28 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2025-71234?
CVE-2025-71234 is a high vulnerability published on February 18, 2026. In the Linux kernel, the following vulnerability has been resolved: wifi: rtl8xxxu: fix slab-out-of-bounds in rtl8xxxustaadd The driver does not set hw->stadatasize, which causes mac80211 to allocate insufficient space for driver private station data in stainfoalloc(). When rtl8xxxustaadd()…
When was CVE-2025-71234 disclosed?
CVE-2025-71234 was first published in the National Vulnerability Database on February 18, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-71234 actively exploited?
CVE-2025-71234 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 93.4% of all scored CVEs.
What is the CVSS score of CVE-2025-71234?
CVE-2025-71234 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2025-71234?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-71234, 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.

Dependency Blast Radius

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