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CVE-2026-98823

UnknownEPSS 0.18%

Last modified

CVE-2026-98823 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: preserve hidden-group beacon IE ownership A hidden-group probe-response entry borrows its beacon IEs from the group's beacon entry. cfg80211_update_assoc_bss_entry() can pass such an entry to cfg80211_update_known_bss() when merging scan entries after a channel switch. Copying the borrowed beacon_ies into the associated entry gives the same allocation two owners. 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: cfg80211: preserve hidden-group beacon IE ownership A hidden-group probe-response entry borrows its beacon IEs from the group's beacon entry. cfg80211_update_assoc_bss_entry() can pass such an entry to cfg80211_update_known_bss() when merging scan entries after a channel switch. Copying the borrowed beacon_ies into the associated entry gives the same allocation two owners. Releasing the group's beacon entry can then leave the associated entry pointing to freed IEs, which are freed again when that entry is released. Skip beacon IE replacement when the source entry belongs to a hidden group. Preserve probe-response processing, the subsequent metadata updates, and the existing rejection path for conflicting hidden beacon updates.

Metrics

EPSS Probability
0.18%

7.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

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

VendorProductVersions
LinuxLinux>= 0afd425b1b64251f19b5d8d8b49bf56fefbc643f, < 00f83d39675adc12d56957a1f5e316812157e4d3; >= 0afd425b1b64251f19b5d8d8b49bf56fefbc643f, < 3c44f780d1738e9ddf438729f5ff6ceb45f9ded3; >= 0afd425b1b64251f19b5d8d8b49bf56fefbc643f, < 8f79f429dc87a4f21e4fcf9a4d3df9484ca9a294; >= 0afd425b1b64251f19b5d8d8b49bf56fefbc643f, < 5617d5328839003c91007ce906b4f100b43926e9; >= 0afd425b1b64251f19b5d8d8b49bf56fefbc643f, < 49b66110a08e4f926f6393e938f226de2750a08b; >= 0afd425b1b64251f19b5d8d8b49bf56fefbc643f, < dd7973a4130b0862be38d7e08cc0e874b3d99967; >= 0afd425b1b64251f19b5d8d8b49bf56fefbc643f, < 5f27581c176f84b52ec0ab9be7b500c10667ef60; >= 0afd425b1b64251f19b5d8d8b49bf56fefbc643f, < cc45f313d85533d647ce619326302aad6f797c14
LinuxLinux5.4

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98823?
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: preserve hidden-group beacon IE ownership A hidden-group probe-response entry borrows its beacon IEs from the group's beacon entry. cfg80211_update_assoc_bss_entry() can pass such an entry to cfg80211_update_known_bss() when merging scan entries after a channel switch. Copying the borrowed beacon_ies into the associated entry gives the same allocation two owners. Releasing the group's beacon entry can then leave the associated entry pointing to freed IEs, which are freed again when that entry is released. Skip beacon IE replacement when the source entry belongs to a hidden group. Preserve probe-response processing, the subsequent metadata updates, and the existing rejection path for conflicting hidden beacon updates.
How severe is CVE-2026-98823?
Severity scoring for CVE-2026-98823 is pending analysis. The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98823?
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