usb: typec: fix potential array underflow in ucsi_ccg_sync_control()
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.3%
exploitation probability
0.3%top 82% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
usb: typec: fix potential array underflow in ucsi_ccg_sync_control()
The "command" variable can be controlled by the user via debugfs. The
worry is that if con_index is zero then "&uc->ucsi->connector[con_index
- 1]" would be an array underflow.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/0e66fd8e5a2e45c7dacfc9178ba702153f4a61a8https://git.kernel.org/stable/c/56971710cd541f2f05160a84b3183477d34a1be9https://git.kernel.org/stable/c/627c2a5056aba42a8a96a8fffe8996aeccf919a9https://git.kernel.org/stable/c/e15fd96c0b701c53f9006bcc836eaeb35a05a023https://git.kernel.org/stable/c/e44189455c62469eb91d383ce9103d54c1f807a3https://git.kernel.org/stable/c/e56aac6e5a25630645607b6856d4b2a17b2311a5https://git.kernel.org/stable/c/ef92cd55289a282910575c5b9d87f646f2d39b38https://lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlhttps://lists.debian.org/debian-lts-announce/2025/10/msg00007.html