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CVE-2026-93802

UnknownEPSS 0.17%

Last modified

CVE-2026-93802 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: validate beacon length before fixed buffer copy rsi_prepare_beacon() copies the mac80211 beacon frame after FRAME_DESC_SZ into a management skb whose usable tailroom may be smaller than MAX_MGMT_PKT_SIZE after alignment. Validate the beacon length against the actual tailroom before the copy and skb_put(). Leave ownership of the management skb with the caller on error, matching the existing rsi_send_beacon() cleanup path.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: validate beacon length before fixed buffer copy rsi_prepare_beacon() copies the mac80211 beacon frame after FRAME_DESC_SZ into a management skb whose usable tailroom may be smaller than MAX_MGMT_PKT_SIZE after alignment. Validate the beacon length against the actual tailroom before the copy and skb_put(). Leave ownership of the management skb with the caller on error, matching the existing rsi_send_beacon() cleanup path.

Metrics

EPSS Probability
0.17%

5.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

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

VendorProductVersions
LinuxLinux>= d26a9559403c7c3ec3b430f5825bc22c3d40abdb, < 795ba65f46fe44061f1195951c122cc8ec685d44; >= d26a9559403c7c3ec3b430f5825bc22c3d40abdb, < 66a964432b2758a4cf69962366e37581d6e70632; >= d26a9559403c7c3ec3b430f5825bc22c3d40abdb, < 7f99742c3c2801f8033d8b7a0a58254d7f24fb1e; >= d26a9559403c7c3ec3b430f5825bc22c3d40abdb, < f08d7f3c916335a0e539f1c45c130615967fac47; >= d26a9559403c7c3ec3b430f5825bc22c3d40abdb, < 87710ad633ce4588aec88611d0d0745eb33a6991; >= d26a9559403c7c3ec3b430f5825bc22c3d40abdb, < 266f195d5a14eec6c482fd09fbc924584c3371a7; >= d26a9559403c7c3ec3b430f5825bc22c3d40abdb, < 8ecdeb8b8a33b22c597299043c0dcfce50beb9ea
LinuxLinux4.14

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-93802?
In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: validate beacon length before fixed buffer copy rsi_prepare_beacon() copies the mac80211 beacon frame after FRAME_DESC_SZ into a management skb whose usable tailroom may be smaller than MAX_MGMT_PKT_SIZE after alignment. Validate the beacon length against the actual tailroom before the copy and skb_put(). Leave ownership of the management skb with the caller on error, matching the existing rsi_send_beacon() cleanup path.
How severe is CVE-2026-93802?
Severity scoring for CVE-2026-93802 is pending analysis. The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-93802?
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