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Review reviewHigh

CVE-2025-71234

Linux Linux, linux kernel

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/u...

CVSS
7.8
EPSS
0.17%
6.54% percentile
CISA KEV
Not listed
Published
2026.02.19
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.17%
Technical severityCVSS 7.8

Vulnerability overview

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/u...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= eef55f1545c92c7181d5083453dee1296298ad3e < 5d810ba377eddee95d30766d360a14efbb3d1872, >= eef55f1545c92c7181d5083453dee1296298ad3e < 116f7bd8160c6b37d1c6939385abf90f6f6ed2f5, >= eef55f1545c92c7181d5083453dee1296298ad3e < 9a0f3fa6ecd0c9c32dbc367a57482bbf7c7d25bf, >= eef55f1545c92c7181d5083453dee1296298ad3e < 86c946bcc00f6390ef65e9614ae60a9377e454f8, >= 6.9, >= 6.9 < 6.12.72, >= 6.13 < 6.18.11, >= 6.19 < 6.19.1
Fixed versions
6.12.72, 6.18.11, 6.19.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-787