7.8

CVE-2026-31399

nvdimm/bus: Fix potential use after free in asynchronous initialization

In the Linux kernel, the following vulnerability has been resolved:

nvdimm/bus: Fix potential use after free in asynchronous initialization

Dingisoul with KASAN reports a use after free if device_add() fails in
nd_async_device_register().

Commit b6eae0f61db2 ("libnvdimm: Hold reference on parent while
scheduling async init") correctly added a reference on the parent device
to be held until asynchronous initialization was complete.  However, if
device_add() results in an allocation failure the ref count of the
device drops to 0 prior to the parent pointer being accessed.  Thus
resulting in use after free.

The bug bot AI correctly identified the fix.  Save a reference to the
parent pointer to be used to drop the parent reference regardless of the
outcome of device_add().
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.4.164 < 4.5
Linux ≫ Linux Kernel Version >= 4.9.137 < 4.10
Linux ≫ Linux Kernel Version >= 4.14.81 < 4.15
Linux ≫ Linux Kernel Version >= 4.18.19 < 4.19
Linux ≫ Linux Kernel Version >= 4.19.2 < 5.10.253
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.203
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.167
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.130
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.78
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.20
Linux ≫ Linux Kernel Version >= 6.19 < 6.19.10
Linux ≫ Linux Kernel Version7.0 Updaterc1
Linux ≫ Linux Kernel Version7.0 Updaterc2
Linux ≫ Linux Kernel Version7.0 Updaterc3
Linux ≫ Linux Kernel Version7.0 Updaterc4
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.12% 0.021
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/9a0fb16ba5b372465a3a1ecd761c6fa911a4ab4d
Patch
https://git.kernel.org/stable/c/e48bf8f1d2b12c1c5ba1f609edbd4cde5dadc20e
Patch
https://git.kernel.org/stable/c/2c638259ad750833fd46a0cf57672a618542d84c
Patch
https://git.kernel.org/stable/c/a226e5b49e5fe8c98b14f8507de670189d191348
Patch
https://git.kernel.org/stable/c/84af19855d1abdee3c9d57c0684e2868e391793c
Patch
https://git.kernel.org/stable/c/a8aec14230322ed8f1e8042b6d656c1631d41163
Patch
https://git.kernel.org/stable/c/6fc36c2a925ceaba203eb13d75a8f0879a2c121b
Patch
https://git.kernel.org/stable/c/a36cf138500e56f50db9f9a33222df6969b38326
Patch