media: sun4i-csi: Return queued buffers on start_streaming() failure

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-68209
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-10 13:20:08 UTC
Updated2026-08-19 17:20:36 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: media: sun4i-csi: Return queued buffers on start_streaming() failure The vb2 framework hands buffers to the driver via buf_queue() before calling start_streaming(). If start_streaming() returns an error without first returning those buffers via vb2_buffer_done(), vb2_start_streaming() fires WARN_ON(owned_by_drv_count) and the queued buffers leak. sun4i_csi_start_streaming() returned -EINVAL when no matching CSI format could be found, before any setup (scratch buffer allocation, pipeline start) had been performed. The remaining error paths already converge on the err_clear_dma_queue label, which calls return_all_buffers(..., VB2_BUF_STATE_QUEUED) under csi->qlock. Jump to that label directly: the intermediate err_disable_device / err_disable_pipeline / err_free_scratch_buffer labels are skipped, which is correct because nothing they would undo has happened yet. This mirrors the uvcvideo fix in commit 4cf3b6fd54eb ("media: uvcvideo: Return queued buffers on start_streaming() failure").

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.001750000 probability, percentile 0.073360000 (date 2026-08-19)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 577bbf23b758848f0c4a50d346460b690c753024 29fce7bcb3b959f6d4fdcdff7d26330152fdf98d git Not specified
CNA Linux Linux affected 577bbf23b758848f0c4a50d346460b690c753024 7c2c30e282745a83d332c3cf92d1c0bcc491ac54 git Not specified
CNA Linux Linux affected 577bbf23b758848f0c4a50d346460b690c753024 3c0bd793b0083fd4639ba7f60d1e7db8c8ac459a git Not specified
CNA Linux Linux affected 577bbf23b758848f0c4a50d346460b690c753024 4872161e6fbe4e1783daea8bff79caddfae0fb82 git Not specified
CNA Linux Linux affected 577bbf23b758848f0c4a50d346460b690c753024 a8abecc638a7feb20b78fabd563b05e30c071331 git Not specified
CNA Linux Linux affected 577bbf23b758848f0c4a50d346460b690c753024 b5184b3f0e9d4cc47059ba1138c9a73d43d2493f git Not specified
CNA Linux Linux affected 577bbf23b758848f0c4a50d346460b690c753024 668face37fdb6b6900645dc8777195498541c9a7 git Not specified
CNA Linux Linux affected 577bbf23b758848f0c4a50d346460b690c753024 bbba3e260a62810a717b4442a3bb96d0ec0f6309 git Not specified
CNA Linux Linux affected 5.4 Not specified
CNA Linux Linux unaffected 5.4 semver Not specified
CNA Linux Linux unaffected 5.10.265 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.216 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.183 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.148 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.101 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.42 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.6 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/7c2c30e282745a83d332c3cf92d1c0bcc491ac54 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a8abecc638a7feb20b78fabd563b05e30c071331 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bbba3e260a62810a717b4442a3bb96d0ec0f6309 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b5184b3f0e9d4cc47059ba1138c9a73d43d2493f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4872161e6fbe4e1783daea8bff79caddfae0fb82 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3c0bd793b0083fd4639ba7f60d1e7db8c8ac459a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/29fce7bcb3b959f6d4fdcdff7d26330152fdf98d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/668face37fdb6b6900645dc8777195498541c9a7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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