CVE-2026-63961
MEDIUM severity · CVSS 5.5
5.5CVSS MEDIUM
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: typec: altmodes/displayport: validate count before reading Status Update VDO A broken/malicious device can send the incorrect count for a status update VDO, which will cause the kernel to read uninitialized stack data and send it off elsewhere. Fix this up by correctly verifying the count for the update object.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/64bd6ccc5799f8473d1f37d4d8f53093dfec5c02 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/64bd6ccc5799f8473d1f37d4d8f53093dfec5c02Patch
- https://git.kernel.org/stable/c/6ffdbcd7a02f3af8fff9b6519830369f574ed44cPatch
- https://git.kernel.org/stable/c/70e7045849e954e56dcbf441b6330e66bc996306Patch
- https://git.kernel.org/stable/c/74aabe9ea30fdfba924fce9594e6aa69a596a4bbPatch
- https://git.kernel.org/stable/c/77a759ec30bc5fb0dd9c867b711d0acfed6c7faaPatch
- https://git.kernel.org/stable/c/8a18f896e667df491331371b55d4ad644dc51d60Patch
- https://git.kernel.org/stable/c/b10eff5abe6aa2a5af10ed17bddff76e3b6e6b9bPatch
- https://git.kernel.org/stable/c/dd7118c010f324497c275e8fd7a35c9baaa2a00fPatch