cbcvebase.
CVE-2022-50317
published 2025-09-15

CVE-2022-50317: In the Linux kernel, the following vulnerability has been resolved: drm/bridge: megachips: Fix a null pointer dereference bug When removing the module we will…

PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.15%
4.3th percentile
In the Linux kernel, the following vulnerability has been resolved: drm/bridge: megachips: Fix a null pointer dereference bug When removing the module we will get the following warning: [ 31.911505] i2c-core: driver [stdp2690-ge-b850v3-fw] unregistered [ 31.912484] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI [ 31.913338] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 31.915280] RIP: 0010:drm_bridge_remove+0x97/0x130 [ 31.921825] Call Trace: [ 31.922533] stdp4028_ge_b850v3_fw_remove+0x34/0x60 [megachips_stdpxxxx_ge_b850v3_fw] [ 31.923139] i2c_device_remove+0x181/0x1f0 The two bridges (stdp2690, stdp4028) do not probe at the same time, so the driver does not call ge_b850v3_resgiter() when probing, causing the driver to try to remove the object that has not been initialized. Fix this by checking whether both the bridges are probed.

Affected

28 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.0.3-1 (bookworm)linux 6.0.3-1 (bookworm)
linuxlinux——
linuxlinux——
linuxlinux>= 11632d4aa2b3f126790e81a4415d6c23103cf8bb < 21764467ab396d9f08921e0a5ffa1214244e1ad921764467ab396d9f08921e0a5ffa1214244e1ad9
linuxlinux>= 11632d4aa2b3f126790e81a4415d6c23103cf8bb < 7371fad5cfe6eada6bb5523c895fd6074b15c2b97371fad5cfe6eada6bb5523c895fd6074b15c2b9
linuxlinux>= 11632d4aa2b3f126790e81a4415d6c23103cf8bb < 1ff673333d46d2c1b053ebd0c1c7c7c79e36943e1ff673333d46d2c1b053ebd0c1c7c7c79e36943e
linuxlinux>= 16e3827904932eccfba0915f0c93b519de3536ac < 5bc20bafcd87ba0858ab772cefc7047cb51bc2495bc20bafcd87ba0858ab772cefc7047cb51bc249
linuxlinux>= 4.14.263 < 4.14.2964.14.296
linuxlinux>= 4.19.226 < 4.19.2624.19.262
linuxlinux>= 405856460d3e7aefb7c1aef047ec88fc4ef2e2a5 < 4610e7a4111fa3f3ce27c09d6d94008c55f1cd314610e7a4111fa3f3ce27c09d6d94008c55f1cd31
linuxlinux>= 5.10.94 < 5.10.1505.10.150
linuxlinux>= 5.15.17 < 5.15.755.15.75
linuxlinux>= 5.16.3 < 5.175.17
linuxlinux>= 5.4.174 < 5.4.2205.4.220
linuxlinux>= 50ad94f8654a53ec9ca3604a7a23cbaf166e0119 < 1daf69228e310938177119c4eadcd30fc75c81e01daf69228e310938177119c4eadcd30fc75c81e0
linuxlinux>= 7649972d97fb98578fbc4a351416cf72895e7c4d < aaa512ad1e59f2edf8a9e4f2b167a44b24670679aaa512ad1e59f2edf8a9e4f2b167a44b24670679
linuxlinux>= b8d10f601f226f055df8b5368d7ea7f369136cd5 < 877e92e9b1bdeb580b31a46061005936be902cd4877e92e9b1bdeb580b31a46061005936be902cd4
linuxlinux_kernel>= 0 < 5.10.158-15.10.158-1
linuxlinux_kernel>= 0 < 6.0.3-16.0.3-1
linuxlinux_kernel>= 0 < 6.0.3-16.0.3-1
linuxlinux_kernel>= 0 < 6.0.3-16.0.3-1
linuxlinux_kernel>= 4.14.263 < 4.14.2964.14.296
linuxlinux_kernel>= 4.19.226 < 4.19.2624.19.262
linuxlinux_kernel>= 5.10.94 < 5.10.1505.10.150
linuxlinux_kernel>= 5.15.17 < 5.15.755.15.75

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
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