CVE-2026-63961
Published: July 22, 2026Last modified: July 22, 2026
Description
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.177-r0) |
| 25 LTS | linux-lts | Fixed (6.12.95-r0) | |
| Stream | linux-lts | Fixed (6.18.35-r1) |
References
- https://git.kernel.org/stable/c/64bd6ccc5799f8473d1f37d4d8f53093dfec5c02
- https://git.kernel.org/stable/c/6ffdbcd7a02f3af8fff9b6519830369f574ed44c
- https://git.kernel.org/stable/c/70e7045849e954e56dcbf441b6330e66bc996306
- https://git.kernel.org/stable/c/74aabe9ea30fdfba924fce9594e6aa69a596a4bb
- https://git.kernel.org/stable/c/77a759ec30bc5fb0dd9c867b711d0acfed6c7faa
- https://git.kernel.org/stable/c/8a18f896e667df491331371b55d4ad644dc51d60
- https://git.kernel.org/stable/c/b10eff5abe6aa2a5af10ed17bddff76e3b6e6b9b
- https://git.kernel.org/stable/c/dd7118c010f324497c275e8fd7a35c9baaa2a00f