9.1

CVE-2024-36896

USB: core: Fix access violation during port device removal

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

USB: core: Fix access violation during port device removal

Testing with KASAN and syzkaller revealed a bug in port.c:disable_store():
usb_hub_to_struct_hub() can return NULL if the hub that the port belongs to
is concurrently removed, but the function does not check for this
possibility before dereferencing the returned value.

It turns out that the first dereference is unnecessary, since hub->intfdev
is the parent of the port device, so it can be changed easily.  Adding a
check for hub == NULL prevents further problems.

The same bug exists in the disable_show() routine, and it can be fixed the
same way.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.0 < 6.1.91
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.31
Linux ≫ Linux Kernel Version >= 6.7 < 6.8.10
Linux ≫ Linux Kernel Version6.9 Updaterc1
Linux ≫ Linux Kernel Version6.9 Updaterc2
Linux ≫ Linux Kernel Version6.9 Updaterc3
Linux ≫ Linux Kernel Version6.9 Updaterc4
Linux ≫ Linux Kernel Version6.9 Updaterc5
Linux ≫ Linux Kernel Version6.9 Updaterc6
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.92% 0.557
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 9.1 3.9 5.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/5f1d68ef5ddac27c6b997adccd1c339cef1e6848
Patch
https://git.kernel.org/stable/c/6119ef6517ce501fc548154691abdaf1f954a277
Patch
https://git.kernel.org/stable/c/63533549ff53d24daf47c443dbd43c308afc3434
Patch
https://git.kernel.org/stable/c/a4b46d450c49f32e9d4247b421e58083fde304ce
Patch