5.5

CVE-2024-46761

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

pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv

The hotplug driver for powerpc (pci/hotplug/pnv_php.c) causes a kernel
crash when we try to hot-unplug/disable the PCIe switch/bridge from
the PHB.

The crash occurs because although the MSI data structure has been
released during disable/hot-unplug path and it has been assigned
with NULL, still during unregistration the code was again trying to
explicitly disable the MSI which causes the NULL pointer dereference and
kernel crash.

The patch fixes the check during unregistration path to prevent invoking
pci_disable_msi/msix() since its data structure is already freed.
Data is provided by the National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 4.19.322
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.284
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.226
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.167
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.110
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.51
Linux ≫ Linux Kernel Version >= 6.7 < 6.10.10
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.01% 0.013
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

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