cbcvebase.
CVE-2024-43863
published 2024-08-21

CVE-2024-43863: In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Fix a deadlock in dma buf fence polling Introduce a version of the fence ops…

PriorityP418medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.16%
6.0th percentile
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Fix a deadlock in dma buf fence polling Introduce a version of the fence ops that on release doesn't remove the fence from the pending list, and thus doesn't require a lock to fix poll->fence wait->fence unref deadlocks. vmwgfx overwrites the wait callback to iterate over the list of all fences and update their status, to do that it holds a lock to prevent the list modifcations from other threads. The fence destroy callback both deletes the fence and removes it from the list of pending fences, for which it holds a lock. dma buf polling cb unrefs a fence after it's been signaled: so the poll calls the wait, which signals the fences, which are being destroyed. The destruction tries to acquire the lock on the pending fences list which it can never get because it's held by the wait from which it was called. Old bug, but not a lot of userspace apps were using dma-buf polling interfaces. Fix those, in particular this fixes KDE stalls/deadlock.

Affected

27 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.106-1 (bookworm)linux 6.1.106-1 (bookworm)
debianlinux-6.1< linux 6.1.106-1 (bookworm)linux 6.1.106-1 (bookworm)
linuxlinux
linuxlinux>= 2298e804e96eb3635c39519c8287befd92460303 < 9908dc0d2ef0e4aec8a242c098455729c0e2f0179908dc0d2ef0e4aec8a242c098455729c0e2f017
linuxlinux>= 2298e804e96eb3635c39519c8287befd92460303 < 9e20d028d8d1deb1e7fed18f22ffc01669cf32379e20d028d8d1deb1e7fed18f22ffc01669cf3237
linuxlinux>= 2298e804e96eb3635c39519c8287befd92460303 < 3b933b16c996af8adb6bc1b5748a63dfb41a82bc3b933b16c996af8adb6bc1b5748a63dfb41a82bc
linuxlinux>= 2298e804e96eb3635c39519c8287befd92460303 < a8943969f9ead2fd3044fc826140a21622ef830ea8943969f9ead2fd3044fc826140a21622ef830e
linuxlinux>= 2298e804e96eb3635c39519c8287befd92460303 < c98ab18b9f315ff977c2c65d7c71298ef98be8e3c98ab18b9f315ff977c2c65d7c71298ef98be8e3
linuxlinux>= 2298e804e96eb3635c39519c8287befd92460303 < e58337100721f3cc0c7424a18730e4f39844934fe58337100721f3cc0c7424a18730e4f39844934f
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.244-15.10.244-1
linuxlinux_kernel>= 0 < 6.1.106-16.1.106-1
linuxlinux_kernel>= 0 < 6.10.4-16.10.4-1
linuxlinux_kernel>= 0 < 6.10.4-16.10.4-1
linuxlinux_kernel>= 0 < 5.4.0-208.2285.4.0-208.228
linuxlinux_kernel>= 0 < 5.15.0-125.1355.15.0-125.135
linuxlinux_kernel>= 0 < 6.8.0-50.516.8.0-50.51
linuxlinux_kernel>= 0 < 4.4.0-266.3004.4.0-266.300
linuxlinux_kernel>= 0 < 4.15.0-235.2474.15.0-235.247
linuxlinux_kernel>= 3.18 < 5.15.1655.15.165
linuxlinux_kernel>= 5.16 < 6.1.1046.1.104
linuxlinux_kernel>= 6.2 < 6.6.456.6.45
linuxlinux_kernel>= 6.7 < 6.10.46.10.4
msrccbl2_kernel_5.15.164.1-1_on_cbl_mariner_2.0
msrccbl2_kernel_5.15.167.1-1_on_cbl_mariner_2.0

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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