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CVE-2026-98891

CVE-2026-98891 · wifi: mac80211: validate deauth frame length before reason access

This page contains facts from public vulnerability sources. Check the original advisory before updating.

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: validate deauth frame length before reason access ieee80211_rx_mgmt_deauth() reads the deauth reason code before checking that the fixed field is actually present in the received frame. Validate the deauth frame length first and only then read the reason code.

Fix available

Published
Updated

Stack: system

Affected products and versions

  • linux

    Versions
    • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 51092dc769f021e9634474e1bd5a561da477fbdb: Affected (git)
    • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a6ed4c00ccdc15011a73daa2b38af9fc5a2c543e: Affected (git)
    • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 80d1a110e9096b5bf41497f6b151154084862385: Affected (git)
    • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < a78689e2beed200d4590318612c74ae25c9408cf: Affected (git)
    • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 7a5ef1fd654d0e90d59aa32c881789c8bcc4125a: Affected (git)
    • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 9df64ad43e1f2c036667bba2bf385e9d7b3af564: Affected (git)
    • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 4a360c6e18dfa9d70006c7247a6a8cc8dfe0d60f: Affected (git)
    • ≥ 0, < 5.10.271: Affected (semver)
    • ≥ 0, < 5.15.222: Affected (semver)
    • ≥ 0, < 6.1.189: Affected (semver)
    • ≥ 0, < 6.6.158: Affected (semver)
    • ≥ 0, < 6.12.111: Affected (semver)
    • ≥ 0, < 6.18.53: Affected (semver)

    Update to 5.10.271; Update to 51092dc769f021e9634474e1bd5a561da477fbdb

  • linux

    Versions
    • ≥ 5.10.271, ≤ 5.10.*: Not affected (semver)
    • ≥ 5.15.222, ≤ 5.15.*: Not affected (semver)
    • ≥ 6.1.189, ≤ 6.1.*: Not affected (semver)
    • ≥ 6.6.158, ≤ 6.6.*: Not affected (semver)
    • ≥ 6.12.111, ≤ 6.12.*: Not affected (semver)
    • ≥ 6.18.53, ≤ 6.18.*: Not affected (semver)
    • ≥ 7.2: Not affected (original_commit_for_fix)

    No fix published

  • linux Debian:12

    Versions
    • 6.1.106-1
    • 6.1.106-2
    • 6.1.106-3
    • 6.1.112-1
    • 6.1.115-1
    • 6.1.119-1
    • 6.1.123-1
    • 6.1.124-1
    • 6.1.128-1
    • 6.1.129-1
    • 6.1.133-1
    • 6.1.135-1
    • 6.1.137-1
    • 6.1.139-1
    • 6.1.140-1
    • 6.1.147-1
    • 6.1.148-1
    • 6.1.153-1
    • 6.1.158-1
    • 6.1.159-1
    • 6.1.162-1
    • 6.1.164-1
    • 6.1.170-1
    • 6.1.170-2
    • 6.1.170-3
    • 6.1.172-1
    • 6.1.174-1
    • 6.1.176-1
    • 6.1.177-1
    • 6.1.180-1
    • 6.1.187-1
    • 6.1.27-1
    • 6.1.37-1
    • 6.1.38-1
    • 6.1.38-2
    • 6.1.38-2~bpo11+1
    • 6.1.38-3
    • 6.1.38-4
    • 6.1.38-4~bpo11+1
    • 6.1.52-1
    • 6.1.55-1
    • 6.1.55-1~bpo11+1
    • 6.1.64-1
    • 6.1.66-1
    • 6.1.67-1
    • 6.1.69-1
    • 6.1.69-1~bpo11+1
    • 6.1.76-1
    • 6.1.76-1~bpo11+1
    • 6.1.82-1
    • 6.1.85-1
    • 6.1.90-1
    • 6.1.90-1~bpo11+1
    • 6.1.94-1
    • 6.1.94-1~bpo11+1
    • 6.1.98-1
    • 6.1.99-1
    Affected ranges
    • ECOSYSTEM: < 6.1.190-1

    Update to 6.1.190-1

  • linux Debian:13

    Versions
    • 6.12.100-1
    • 6.12.101-1
    • 6.12.105-1
    • 6.12.107-1
    • 6.12.38-1
    • 6.12.41-1
    • 6.12.43-1
    • 6.12.43-1~bpo12+1
    • 6.12.48-1
    • 6.12.57-1
    • 6.12.57-1~bpo12+1
    • 6.12.63-1
    • 6.12.63-1~bpo12+1
    • 6.12.69-1
    • 6.12.69-1~bpo12+1
    • 6.12.73-1
    • 6.12.73-1~bpo12+1
    • 6.12.74-1
    • 6.12.74-2
    • 6.12.74-2~bpo12+1
    • 6.12.85-1
    • 6.12.85-1~bpo12+1
    • 6.12.86-1
    • 6.12.86-1~bpo12+1
    • 6.12.88-1
    • 6.12.88-1~bpo12+1
    • 6.12.90-1
    • 6.12.90-1~bpo12+1
    • 6.12.90-2
    • 6.12.90-2~bpo12+1
    • 6.12.94-1
    • 6.12.94-1~bpo12+1
    • 6.12.95-1
    • 6.12.95-1~bpo12+1
    • 6.12.96-1
    Affected ranges
    • ECOSYSTEM: < 6.12.111-1

    Update to 6.12.111-1

  • linux Debian:14

    Versions
    • 6.12.100-1
    • 6.12.101-1
    • 6.12.105-1
    • 6.12.107-1
    • 6.12.111-1
    • 6.12.113-1
    • 6.12.38-1
    • 6.12.41-1
    • 6.12.43-1
    • 6.12.43-1~bpo12+1
    • 6.12.48-1
    • 6.12.57-1
    • 6.12.57-1~bpo12+1
    • 6.12.63-1
    • 6.12.63-1~bpo12+1
    • 6.12.69-1
    • 6.12.69-1~bpo12+1
    • 6.12.73-1
    • 6.12.73-1~bpo12+1
    • 6.12.74-1
    • 6.12.74-2
    • 6.12.74-2~bpo12+1
    • 6.12.85-1
    • 6.12.85-1~bpo12+1
    • 6.12.86-1
    • 6.12.86-1~bpo12+1
    • 6.12.88-1
    • 6.12.88-1~bpo12+1
    • 6.12.90-1
    • 6.12.90-1~bpo12+1
    • 6.12.90-2
    • 6.12.90-2~bpo12+1
    • 6.12.94-1
    • 6.12.94-1~bpo12+1
    • 6.12.95-1
    • 6.12.95-1~bpo12+1
    • 6.12.96-1
    • 6.13.10-1~exp1
    • 6.13.11-1~exp1
    • 6.13.2-1~exp1
    • 6.13.3-1~exp1
    • 6.13.4-1~exp1
    • 6.13.5-1~exp1
    • 6.13.6-1~exp1
    • 6.13.7-1~exp1
    • 6.13.8-1~exp1
    • 6.13.9-1~exp1
    • 6.13~rc6-1~exp1
    • 6.13~rc7-1~exp1
    • 6.14.3-1~exp1
    • 6.14.5-1~exp1
    • 6.14.6-1~exp1
    • 6.15-1~exp1
    • 6.15.1-1~exp1
    • 6.15.2-1~exp1
    • 6.15.3-1~exp1
    • 6.15.4-1~exp1
    • 6.15.5-1~exp1
    • 6.15.6-1~exp1
    • 6.15~rc7-1~exp1
    • 6.16-1~exp1
    • 6.16.1-1~exp1
    • 6.16.10-1
    • 6.16.11-1
    • 6.16.12-1
    • 6.16.12-1~bpo13+1
    • 6.16.12-2
    • 6.16.3-1
    • 6.16.3-1~bpo13+1
    • 6.16.5-1
    • 6.16.6-1
    • 6.16.7-1
    • 6.16.8-1
    • 6.16.9-1
    • 6.16~rc7-1~exp1
    • 6.17.10-1
    • 6.17.11-1
    • 6.17.12-1
    • 6.17.13-1
    • 6.17.13-1~bpo13+1
    • 6.17.2-1~exp1
    • 6.17.5-1~exp1
    • 6.17.6-1
    • 6.17.7-1
    • 6.17.7-2
    • 6.17.8-1
    • 6.17.8-1~bpo13+1
    • 6.17.9-1
    • 6.18.1-1~exp1
    • 6.18.10-1
    • 6.18.12-1
    • 6.18.12-1~bpo13+1
    • 6.18.13-1
    • 6.18.14-1
    • 6.18.15-1
    • 6.18.15-1~bpo13+1
    • 6.18.2-1~exp1
    • 6.18.3-1
    • 6.18.5-1
    • 6.18.5-1~bpo13+1
    • 6.18.8-1
    • 6.18.9-1
    • 6.18.9-1~bpo13+1
    • 6.18~rc4-1~exp1
    • 6.18~rc4-1~exp2
    • 6.18~rc5-1~exp1
    • 6.18~rc6-1~exp1
    • 6.18~rc7-1~exp1
    • 6.19-1~exp1
    • 6.19.10-1
    • 6.19.10-1~bpo13+1
    • 6.19.11-1
    • 6.19.11-1~bpo13+1
    • 6.19.12-1
    • 6.19.13-1
    • 6.19.13-1~bpo13+1
    • 6.19.14-1
    • 6.19.14-1~bpo13+1
    • 6.19.2-1~exp1
    • 6.19.3-1~exp1
    • 6.19.4-1~exp1
    • 6.19.5-1~exp1
    • 6.19.6-1
    • 6.19.6-2
    • 6.19.6-2~bpo13+1
    • 6.19.8-1
    • 6.19.8-1~bpo13+1
    • 6.19~rc4-1~exp1
    • 6.19~rc5-1~exp1
    • 6.19~rc6-1~exp1
    • 6.19~rc7-1~exp1
    • 6.19~rc8-1~exp1
    • 7.0-1~exp1
    • 7.0.1-1~exp1
    • 7.0.10-1
    • 7.0.10-1~bpo13+1
    • 7.0.12-1
    • 7.0.12-2
    • 7.0.12-2~bpo13+1
    • 7.0.13-1
    • 7.0.13-1~bpo13+1
    • 7.0.14-1
    • 7.0.3-1
    • 7.0.4-1
    • 7.0.4-1~bpo13+1
    • 7.0.7-1
    • 7.0.7-1~bpo13+1
    • 7.0.9-1
    • 7.0.9-1~bpo13+1
    • 7.1.1-1~exp1
    • 7.1.10-1
    • 7.1.12-1
    • 7.1.13-1
    • 7.1.13-1~bpo13+1
    • 7.1.2-1~exp1
    • 7.1.3-1
    • 7.1.3-1+sunvdc
    • 7.1.3-1~bpo13+1
    • 7.1.4-1
    • 7.1.5-1
    • 7.1.6-1
    • 7.1.7-1
    • 7.1.7-1~bpo13+1
    • 7.1.8-1
    • 7.1.8-1~bpo13+1
    • 7.1.8-2
    • 7.1.9-1
    • 7.1.9-1+sparc64
    • 7.1~rc2-1~exp1
    • 7.1~rc3-1~exp1
    • 7.1~rc4-1~exp1
    • 7.1~rc4-1~exp2
    • 7.1~rc5-1~exp1
    • 7.1~rc7-1~exp1
    • 7.2.2-1~exp1
    • 7.2.3-1~exp1
    • 7.2.6-1~bpo13+1
    • 7.2~rc3-1~exp1
    • 7.2~rc5-1~exp1
    • 7.2~rc7-1~exp1
    Affected ranges
    • ECOSYSTEM: < 7.2.6-1

    Update to 7.2.6-1

Original sources

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