cbcvebase.
CVE-2024-50175
published 2024-11-08

CVE-2024-50175: In the Linux kernel, the following vulnerability has been resolved: media: qcom: camss: Remove use_count guard in stop_streaming The use_count check was…

PriorityP421medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.22%
12.5th percentile
In the Linux kernel, the following vulnerability has been resolved: media: qcom: camss: Remove use_count guard in stop_streaming The use_count check was introduced so that multiple concurrent Raw Data Interfaces RDIs could be driven by different virtual channels VCs on the CSIPHY input driving the video pipeline. This is an invalid use of use_count though as use_count pertains to the number of times a video entity has been opened by user-space not the number of active streams. If use_count and stream-on count don't agree then stop_streaming() will break as is currently the case and has become apparent when using CAMSS with libcamera's released softisp 0.3. The use of use_count like this is a bit hacky and right now breaks regular usage of CAMSS for a single stream case. Stopping qcam results in the splat below, and then it cannot be started again and any attempts to do so fails with -EBUSY. [ 1265.509831] WARNING: CPU: 5 PID: 919 at drivers/media/common/videobuf2/videobuf2-core.c:2183 __vb2_queue_cancel+0x230/0x2c8 [videobuf2_common] ... [ 1265.510630] Call trace: [ 1265.510636] __vb2_queue_cancel+0x230/0x2c8 [videobuf2_common] [ 1265.510648] vb2_core_streamoff+0x24/0xcc [videobuf2_common] [ 1265.510660] vb2_ioctl_streamoff+0x5c/0xa8 [videobuf2_v4l2] [ 1265.510673] v4l_streamoff+0x24/0x30 [videodev] [ 1265.510707] __video_do_ioctl+0x190/0x3f4 [videodev] [ 1265.510732] video_usercopy+0x304/0x8c4 [videodev] [ 1265.510757] video_ioctl2+0x18/0x34 [videodev] [ 1265.510782] v4l2_ioctl+0x40/0x60 [videodev] ... [ 1265.510944] videobuf2_common: driver bug: stop_streaming operation is leaving buffer 0 in active state [ 1265.511175] videobuf2_common: driver bug: stop_streaming operation is leaving buffer 1 in active state [ 1265.511398] videobuf2_common: driver bug: stop_streaming operation is leaving buffer 2 in active st One CAMSS specific way to handle multiple VCs on the same RDI might be: - Reference count each pipeline enable for CSIPHY, CSID, VFE and RDIx. - The

Affected

12 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.11.4-1 (forky)linux 6.11.4-1 (forky)
linuxlinux
linuxlinux>= 89013969e23247661f0514c77f26d60fa083216c < c2218a82f795dc3d0b6210bcaa3d9c5ca736fcd9c2218a82f795dc3d0b6210bcaa3d9c5ca736fcd9
linuxlinux>= 89013969e23247661f0514c77f26d60fa083216c < a975db8aea152f9907aa53a7f517e557ccb40da3a975db8aea152f9907aa53a7f517e557ccb40da3
linuxlinux>= 89013969e23247661f0514c77f26d60fa083216c < d7d4dde3decef1b5aa1f5c390147f79aae412deed7d4dde3decef1b5aa1f5c390147f79aae412dee
linuxlinux>= 89013969e23247661f0514c77f26d60fa083216c < 25f18cb1b673220b76a86ebef8e7fb79bd303b2725f18cb1b673220b76a86ebef8e7fb79bd303b27
linuxlinux_kernel>= 0 < 6.11.4-16.11.4-1
linuxlinux_kernel>= 0 < 6.11.4-16.11.4-1
linuxlinux_kernel>= 0 < 6.8.0-54.566.8.0-54.56
linuxlinux_kernel>= 6.11 < 6.11.36.11.3
linuxlinux_kernel>= 6.4 < 6.6.556.6.55
linuxlinux_kernel>= 6.7 < 6.10.146.10.14

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_debian5.5LOW
vendor_redhat5.5MEDIUM
Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.