wifi: mac80211: validate deauth frame length before reason access
Summary
| CVE | CVE-2026-98891 |
|---|
| State | PUBLISHED |
|---|
| Assigner | Linux |
|---|
| Source Priority | CVE Program / NVD first with legacy fallback |
|---|
| Published | 2026-10-23 12:18:22 UTC |
|---|
| Updated | 2026-10-23 12:18:22 UTC |
|---|
| Description | 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. |
|---|
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 51092dc769f021e9634474e1bd5a561da477fbdb git |
Not specified |
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 a6ed4c00ccdc15011a73daa2b38af9fc5a2c543e git |
Not specified |
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 80d1a110e9096b5bf41497f6b151154084862385 git |
Not specified |
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 a78689e2beed200d4590318612c74ae25c9408cf git |
Not specified |
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 7a5ef1fd654d0e90d59aa32c881789c8bcc4125a git |
Not specified |
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 9df64ad43e1f2c036667bba2bf385e9d7b3af564 git |
Not specified |
| CNA |
Linux |
Linux |
affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 4a360c6e18dfa9d70006c7247a6a8cc8dfe0d60f git |
Not specified |
| CNA |
Linux |
Linux |
affected 5.10.271 semver |
Not specified |
| CNA |
Linux |
Linux |
affected 5.15.222 semver |
Not specified |
| CNA |
Linux |
Linux |
affected 6.1.189 semver |
Not specified |
| CNA |
Linux |
Linux |
affected 6.6.158 semver |
Not specified |
| CNA |
Linux |
Linux |
affected 6.12.111 semver |
Not specified |
| CNA |
Linux |
Linux |
affected 6.18.53 semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 5.10.271 5.10.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 5.15.222 5.15.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.1.189 6.1.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.6.158 6.6.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.12.111 6.12.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.18.53 6.18.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.2 * original_commit_for_fix |
Not specified |
References
| Reference | Source | Link | Tags |
|---|
| git.kernel.org/stable/c/51092dc769f021e9634474e1bd5a561da477fbdb |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/80d1a110e9096b5bf41497f6b151154084862385 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/a6ed4c00ccdc15011a73daa2b38af9fc5a2c543e |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/a78689e2beed200d4590318612c74ae25c9408cf |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/7a5ef1fd654d0e90d59aa32c881789c8bcc4125a |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/9df64ad43e1f2c036667bba2bf385e9d7b3af564 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/4a360c6e18dfa9d70006c7247a6a8cc8dfe0d60f |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.