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CVE-2026-68353

HIGHCVSS 8.1/10EPSS 0.28%

Last modified

CVE-2026-68353 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler The firmware-controlled num_msg field (u8, 0-255) drives the loop in ath6kl_wmi_tx_complete_event_rx() without validation against the buffer length. This allows out-of-bounds reads of up to 1020 bytes past the WMI event buffer when the firmware sends an inflated num_msg. Add a check that the buffer is large enough to hold the fixed struct and the num_msg variable-length entries.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler The firmware-controlled num_msg field (u8, 0-255) drives the loop in ath6kl_wmi_tx_complete_event_rx() without validation against the buffer length. This allows out-of-bounds reads of up to 1020 bytes past the WMI event buffer when the firmware sends an inflated num_msg. Add a check that the buffer is large enough to hold the fixed struct and the num_msg variable-length entries.

Metrics

CVSS 3.1
8.1/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS Probability
0.28%

20.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

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

VendorProductVersions
LinuxLinux>= bdcd81707973cf8aa9305337166f8ee842a050d4, < 5297299c3fa6133275db0be99d69cd759b6cbfe9; >= bdcd81707973cf8aa9305337166f8ee842a050d4, < 35196a07603f8c94a4943093bc26d5b5826285f8; >= bdcd81707973cf8aa9305337166f8ee842a050d4, < 0e0fc04af9b443c6b425f00fb604ff599bc80d1d; >= bdcd81707973cf8aa9305337166f8ee842a050d4, < 69ac7ba3a3df6654e7daa82674575a8c4a1a63ea; >= bdcd81707973cf8aa9305337166f8ee842a050d4, < 289edc3c71344b89e6522891147cfb8f61b088bb; >= bdcd81707973cf8aa9305337166f8ee842a050d4, < eb636fbc443149b3501c3f97e26225ddcb314a0f; >= bdcd81707973cf8aa9305337166f8ee842a050d4, < c38b0d5c661951b5dd082bdf31f8a57a0ce6e540; >= bdcd81707973cf8aa9305337166f8ee842a050d4, < 3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495
LinuxLinux3.2

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-68353?
In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler The firmware-controlled num_msg field (u8, 0-255) drives the loop in ath6kl_wmi_tx_complete_event_rx() without validation against the buffer length. This allows out-of-bounds reads of up to 1020 bytes past the WMI event buffer when the firmware sends an inflated num_msg. Add a check that the buffer is large enough to hold the fixed struct and the num_msg variable-length entries.
How severe is CVE-2026-68353?
CVE-2026-68353 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.
How do I fix CVE-2026-68353?
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