CVE-2026-93077
kernel: cxl/features: Clamp Get Feature output size to the remaining buffer
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 20, 2026
Description
A flaw was found in the Linux kernel's cxl/features component. The cxl_get_feature() function, when reading feature data, uses a fixed output buffer size in a loop. This can lead to a buffer overflow if a connected device returns more data than the remaining buffer capacity, potentially allowing for memory corruption.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-787 · Out-of-bounds Write