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CVE-2026-98891

UnknownEPSS 0.18%

Last modified

CVE-2026-98891 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.18%

7.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= c9c99f8938e41b878802d5d8481d6f7a212515b0, < 51092dc769f021e9634474e1bd5a561da477fbdb; >= c9c99f8938e41b878802d5d8481d6f7a212515b0, < a6ed4c00ccdc15011a73daa2b38af9fc5a2c543e; >= c9c99f8938e41b878802d5d8481d6f7a212515b0, < 80d1a110e9096b5bf41497f6b151154084862385; >= c9c99f8938e41b878802d5d8481d6f7a212515b0, < a78689e2beed200d4590318612c74ae25c9408cf; >= c9c99f8938e41b878802d5d8481d6f7a212515b0, < 7a5ef1fd654d0e90d59aa32c881789c8bcc4125a; >= c9c99f8938e41b878802d5d8481d6f7a212515b0, < 9df64ad43e1f2c036667bba2bf385e9d7b3af564; >= c9c99f8938e41b878802d5d8481d6f7a212515b0, < 4a360c6e18dfa9d70006c7247a6a8cc8dfe0d60f
LinuxLinux4.2

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98891?
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.
How severe is CVE-2026-98891?
Severity scoring for CVE-2026-98891 is pending analysis. The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98891?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST