cbcvebase.
CVE-2024-46698
published 2024-09-13

CVE-2024-46698: In the Linux kernel, the following vulnerability has been resolved: video/aperture: optionally match the device in sysfb_disable() In…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.19%
8.6th percentile
In the Linux kernel, the following vulnerability has been resolved: video/aperture: optionally match the device in sysfb_disable() In aperture_remove_conflicting_pci_devices(), we currently only call sysfb_disable() on vga class devices. This leads to the following problem when the pimary device is not VGA compatible: 1. A PCI device with a non-VGA class is the boot display 2. That device is probed first and it is not a VGA device so sysfb_disable() is not called, but the device resources are freed by aperture_detach_platform_device() 3. Non-primary GPU has a VGA class and it ends up calling sysfb_disable() 4. NULL pointer dereference via sysfb_disable() since the resources have already been freed by aperture_detach_platform_device() when it was called by the other device. Fix this by passing a device pointer to sysfb_disable() and checking the device to determine if we should execute it or not. v2: Fix build when CONFIG_SCREEN_INFO is not set v3: Move device check into the mutex Drop primary variable in aperture_remove_conflicting_pci_devices() Drop __init on pci sysfb_pci_dev_is_enabled()

Affected

11 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.10.9-1 (forky)linux 6.10.9-1 (forky)
linuxlinux
linuxlinux
linuxlinux>= 5ae3716cfdcd286268133867f67d0803847acefc < 17e78f43de0c6da34204cc858b4cc05671ea9acf17e78f43de0c6da34204cc858b4cc05671ea9acf
linuxlinux>= 5ae3716cfdcd286268133867f67d0803847acefc < b49420d6a1aeb399e5b107fc6eb8584d0860fbd7b49420d6a1aeb399e5b107fc6eb8584d0860fbd7
linuxlinux>= 6.1.47 < 6.26.2
linuxlinux_kernel
linuxlinux_kernel>= 0 < 6.10.9-16.10.9-1
linuxlinux_kernel>= 0 < 6.10.9-16.10.9-1
linuxlinux_kernel>= 0 < 6.8.0-50.516.8.0-50.51
linuxlinux_kernel>= 6.5 < 6.10.86.10.8

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
vendor_ubuntu5.5MEDIUM
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