CVE-2026-63961

usb: typec: altmodes/displayport: validate count before reading Status Update VDO

State: Published
Severity: Not scored
Published: Jul 19, 2026
Updated: Jul 20, 2026
Reserved: Jul 19, 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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before 74aabe9ea30fdfba924fce9594e6aa69a596a4bbAffected 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before dd7118c010f324497c275e8fd7a35c9baaa2a00fAffected 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before 6ffdbcd7a02f3af8fff9b6519830369f574ed44cAffected 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before 70e7045849e954e56dcbf441b6330e66bc996306Affected 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before 64bd6ccc5799f8473d1f37d4d8f53093dfec5c02Affected 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before b10eff5abe6aa2a5af10ed17bddff76e3b6e6b9bAffected 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before 77a759ec30bc5fb0dd9c867b711d0acfed6c7faaAffected 0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before 8a18f896e667df491331371b55d4ad644dc51d60Affected
LinuxLinux	4.19Affected before 4.19Not affected 5.10.259 through 5.10.Not affected 5.15.210 through 5.15.Not affected 6.1.176 through 6.1.Not affected 6.6.143 through 6.6.Not affected 6.12.93 through 6.12.Not affected 6.18.35 through 6.18.Not affected 7.0.12 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before 74aabe9ea30fdfba924fce9594e6aa69a596a4bbAffected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before dd7118c010f324497c275e8fd7a35c9baaa2a00fAffected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before 6ffdbcd7a02f3af8fff9b6519830369f574ed44cAffected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before 70e7045849e954e56dcbf441b6330e66bc996306Affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before 64bd6ccc5799f8473d1f37d4d8f53093dfec5c02Affected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before b10eff5abe6aa2a5af10ed17bddff76e3b6e6b9bAffected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before 77a759ec30bc5fb0dd9c867b711d0acfed6c7faaAffected
0e3bb7d6894d9b6e67d6382bb03a46a1dc989588 to before 8a18f896e667df491331371b55d4ad644dc51d60Affected

LinuxLinux

4.19Affected
before 4.19Not affected
5.10.259 through 5.10.*Not affected
5.15.210 through 5.15.*Not affected
6.1.176 through 6.1.*Not affected
6.6.143 through 6.6.*Not affected
6.12.93 through 6.12.*Not affected
6.18.35 through 6.18.*Not affected
7.0.12 through 7.0.*Not affected
7.1 and laterNot affected

References

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