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.
References
Configurations
Configuration 1 (hide)
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History
27 Apr 2026, 20:26
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CWE | CWE-416 | |
| First Time |
Linux
Linux linux Kernel |
|
| References | () https://git.kernel.org/stable/c/08e57f5e1a9067d5fbf33993aa7f51d60b3d13a4 - Patch | |
| References | () https://git.kernel.org/stable/c/61f2aa23b0ce8d7aa5071ed25a7471e246a4fdd4 - Patch | |
| References | () https://git.kernel.org/stable/c/7003ae4810ca83f0ddca85b768500e313c4b998c - Patch | |
| References | () https://git.kernel.org/stable/c/9e1b798257f96d2e2a2639830eb71add545ce749 - Patch | |
| References | () https://git.kernel.org/stable/c/c78e1d4e48f23792adaa7c94251e22b0d9700a39 - Patch |
27 Apr 2026, 12:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
24 Apr 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-24 15:16
Updated : 2026-04-27 20:26
NVD link : CVE-2026-31582
Mitre link : CVE-2026-31582
CVE.ORG link : CVE-2026-31582
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-416
Use After Free