CVE-2026-68209media: sun4i-csi: Return queued buffers on start_streaming() failure
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In 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").
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 577bbf23b758848f0c4a50d346460b690c753024 builds before 29fce7bcb3b959f6d4fdcdff7d26330152fdf98d; 577bbf23b758848f0c4a50d346460b690c753024 builds before 7c2c30e282745a83d332c3cf92d1c0bcc491ac54; 577bbf23b758848f0c4a50d346460b690c753024 builds before 3c0bd793b0083fd4639ba7f60d1e7db8c8ac459a; from 577bbf23b758848f0c4a50d346460b690c753024 before 4872161e6fbe4e1783daea8bff79caddfae0fb82; from 577bbf23b758848f0c4a50d346460b690c753024 before a8abecc638a7feb20b78fabd563b05e30c071331; from 577bbf23b758848f0c4a50d346460b690c753024 before b5184b3f0e9d4cc47059ba1138c9a73d43d2493f; from 577bbf23b758848f0c4a50d346460b690c753024 before 668face37fdb6b6900645dc8777195498541c9a7; from 577bbf23b758848f0c4a50d346460b690c753024 before bbba3e260a62810a717b4442a3bb96d0ec0f6309 | CNA record |
References
- https://git.kernel.org/stable/c/29fce7bcb3b959f6d4fdcdff7d26330152fdf98d
- https://git.kernel.org/stable/c/7c2c30e282745a83d332c3cf92d1c0bcc491ac54
- https://git.kernel.org/stable/c/3c0bd793b0083fd4639ba7f60d1e7db8c8ac459a
- https://git.kernel.org/stable/c/4872161e6fbe4e1783daea8bff79caddfae0fb82
- https://git.kernel.org/stable/c/a8abecc638a7feb20b78fabd563b05e30c071331
- https://git.kernel.org/stable/c/b5184b3f0e9d4cc47059ba1138c9a73d43d2493f
- https://git.kernel.org/stable/c/668face37fdb6b6900645dc8777195498541c9a7
- https://git.kernel.org/stable/c/bbba3e260a62810a717b4442a3bb96d0ec0f6309
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.