CVE-2023-53153

wifi: cfg80211: Fix use after free for wext

HIGH

7.8

CVSS Score

Published: September 15, 2025 at 02:03 PM UTC

Updated: June 17, 2026 at 06:44 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.2%

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: Fix use after free for wext Key information in wext.connect is not reset on (re)connect and can hold data from a previous connection. Reset key data to avoid that drivers or mac80211 incorrectly detect a WEP connection request and access the freed or already reused memory. Additionally optimize cfg80211_sme_connect() and avoid an useless schedule of conn_work.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

2.6.32 ≤ v < 4.14.3082.6.32 ≤ v < 4.19.2762.6.32 ≤ v < 5.10.1732.6.32 ≤ v < 5.15.992.6.32 ≤ v < 5.4.2352.6.32 ≤ v < 6.1.162.6.32 ≤ v < 6.2.32.6.32 ≤ v < 6.34.15 ≤ v < 4.19.2764.20 ≤ v < 5.4.2355.11 ≤ v < 5.15.995.16 ≤ v < 6.1.165.5 ≤ v < 5.10.1736.2 ≤ v < 6.2.32.6.32fffd0934b9390f34bec45762192b7edd3b12b4b5

Vendor states this is fixed in 015b8cc5e7c4d7bb671f1984d7b7338c310b185b (fixed)

Vendor states this is fixed in 22dfb21bf1cd876616d45cda1bc6daa89eec6747 (fixed)

Vendor states this is fixed in 2cfe78619b0de6d2da773978bc2d22797212eaa7 (fixed)

Vendor states this is fixed in 66af4a2ab1d65d556d638cb9555a3b823c2557a9 (fixed)

Vendor states this is fixed in 6f1959c17d4cb5b74af6fc31dc787e1dc3e4f6e2 (fixed)

Vendor states this is fixed in a2a92b3e9d8e03ee3f9ee407fc46a9b4bd02d8b6 (fixed)

Vendor states this is fixed in f4b6a138efb8a32507b8946104e32cb926308da7 (fixed)

Vendor states this is fixed in fd081afd21eb35b968b0330700c43ec94986e1c4 (fixed)

Vendor states this is fixed in 2.6.32 (unaffected)

Vendor states this is fixed in 4.14.308 (unaffected)

Vendor states this is fixed in 4.19.276 (unaffected)

Vendor states this is fixed in 5.10.173 (unaffected)