CVE-2026-31729: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: validate connector number in ucsi_notify_common() The connector number extracted from CCI via UCSI_CCI_CONNECTOR() is a 7-bit field (0-127) that is used to index into the connector array in ucsi_connector_change(). However, the array is only allocated for the number of connectors reported by the device (typically 2-4 entries). A malicious or malfunctioning device could report an out-of-range connector number in the CCI, causing an out-of-bounds array access in ucsi_connector_change(). Add a bounds check in ucsi_notify_common(), the central point where CCI is parsed after arriving from hardware, so that bogus connector numbers are rejected before they propagate further.

Засегнати продукти

• Linux Linux: bdc62f2bae8fb0e8e99574de5232f0a3c54a27df преди f6dcbf2b024d55549959402f1db6c614e51d52cb; bdc62f2bae8fb0e8e99574de5232f0a3c54a27df преди f4e608fe12b7ac6a4a57176ab0296bb5a110a078; bdc62f2bae8fb0e8e99574de5232f0a3c54a27df преди 98429e9ec89a5e3a204112dfaa2dbe6ca28493a0; bdc62f2bae8fb0e8e99574de5232f0a3c54a27df преди d2d8c17ac01a1b1f638ea5d340a884ccc5015186
• Linux Linux: 5.5; преди 5.5; 6.12.81 до 6.12.*; 6.18.22 до 6.18.*; 6.19.12 до 6.19.*; 7.0 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-31729
• https://nvd.nist.gov/vuln/detail/CVE-2026-31729
• https://git.kernel.org/stable/c/f6dcbf2b024d55549959402f1db6c614e51d52cb
• https://git.kernel.org/stable/c/f4e608fe12b7ac6a4a57176ab0296bb5a110a078
• https://git.kernel.org/stable/c/98429e9ec89a5e3a204112dfaa2dbe6ca28493a0
• https://git.kernel.org/stable/c/d2d8c17ac01a1b1f638ea5d340a884ccc5015186