CVE-2026-31582: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: hwmon: (powerz) Fix use-after-free on USB disconnect After powerz_disconnect() frees the URB and releases the mutex, a subsequent powerz_read() call can acquire the mutex and call powerz_read_data(), which dereferences the freed URB pointer. Fix by: - Setting priv->urb to NULL in powerz_disconnect() so that powerz_read_data() can detect the disconnected state. - Adding a !priv->urb check at the start of powerz_read_data() to return -ENODEV on a disconnected device. - Moving usb_set_intfdata() before hwmon registration so the disconnect handler can always find the priv pointer.

Засегнати продукти

• Linux Linux: 4381a36abdf1c5c0323c1c51f869dc000115eb20 преди c78e1d4e48f23792adaa7c94251e22b0d9700a39; 4381a36abdf1c5c0323c1c51f869dc000115eb20 преди 9e1b798257f96d2e2a2639830eb71add545ce749; 4381a36abdf1c5c0323c1c51f869dc000115eb20 преди 7003ae4810ca83f0ddca85b768500e313c4b998c; 4381a36abdf1c5c0323c1c51f869dc000115eb20 преди 61f2aa23b0ce8d7aa5071ed25a7471e246a4fdd4; 4381a36abdf1c5c0323c1c51f869dc000115eb20 преди 08e57f5e1a9067d5fbf33993aa7f51d60b3d13a4
• Linux Linux: 6.7; преди 6.7; 6.12.83 до 6.12.*; 6.18.24 до 6.18.*; 6.19.14 до 6.19.*; 7.0.1 до 7.0.*; 7.1 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-2026-31582
• https://nvd.nist.gov/vuln/detail/CVE-2026-31582
• https://git.kernel.org/stable/c/c78e1d4e48f23792adaa7c94251e22b0d9700a39
• https://git.kernel.org/stable/c/9e1b798257f96d2e2a2639830eb71add545ce749
• https://git.kernel.org/stable/c/7003ae4810ca83f0ddca85b768500e313c4b998c
• https://git.kernel.org/stable/c/61f2aa23b0ce8d7aa5071ed25a7471e246a4fdd4
• https://git.kernel.org/stable/c/08e57f5e1a9067d5fbf33993aa7f51d60b3d13a4