CVE-2022-48987 - CVE House
Back to Database
Status published Medium CVE-2022-48987

media: v4l2-dv-timings.c: fix too strict blanking sanity checks

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: media: v4l2-dv-timings.c: fix too strict blanking sanity checks Sanity checks were added to verify the v4l2_bt_timings blanking fields in order to avoid integer overflows when userspace passes weird values. But that assumed that userspace would correctly fill in the front porch, backporch and sync values, but sometimes all you know is the total blanking, which is then assigned to just one of these fields. And that can fail with these checks. So instead set a maximum for the total horizontal and vertical blanking and check that each field remains below that. That is still sufficient to avoid integer overflows, but it also allows for more flexibility in how userspace fills in these fields.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2022-48987

Credits & Attribution

No credits recorded in the NVD database.

References

More from Linux

View All →
CVE-2025-71315
drm/vkms: Convert to DRM's vblank timer
Unknown 0
CVE-2025-71314
drm/panthor: Recover from panthor_gpu_flush_caches() failures
Unknown 0
CVE-2025-71313
PCI: endpoint: Add missing NULL check for alloc_workqueue()
Unknown 0
CVE-2025-71312
fs/ntfs3: fix ntfs_mount_options leak in ntfs_fill_super()
Unknown 0
CVE-2025-71311
fs/ntfs3: Initialize new folios before use
Unknown 0

Affected Vendor

Affected Software

Linux
Vulnerable Versions:
15ded23db134da975b49ea99770de0346c193b24, 3d43b2b8a3cdadd6cef9ac8ef5d156b6214a01c8, 9cf9211635b68e8e0c8cb88d43ca7dc83e4632aa, b4a3a01762ae072c7f6ff2ff53b5019761288346, 683015ae163481457a16fad2317af66360dc4762, 491c0959f01d87bcbd5a1498bc70e0a3382c65a8, dc7276c3f6ca008be1faf531f84b49906c9bcf7f, 4b6d66a45ed34a15721cb9e11492fa1a24bc83df, 4.9.332, 4.14.298, 4.19.264, 5.4.223, 5.10.153, 5.15.77, 6.0.7

Timeline

Official Publish: October 21st, 2024
Last Modified: May 11th, 2026
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.