CVE-2026-90017 Linux kernel rtl8723bs - Out-of-Bounds Read

Linux kernel staging rtl8723bs contains an out-of-bounds read caused by missing length check in rtw_action_frame_parse(), letting attackers cause memory read beyond buffer, exploit requires sending a short management action frame.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.40% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out-of-Bounds Read
Impact
Information Disclosure, Denial Of Service
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Published
16 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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