Answer in brief
CVE-2026-68209 records a High severity (CVSS 7.8) vulnerability in media: sun4i-csi: Return queued buffers on start_streaming() failure. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=577bbf23b758848f0c4a50d346460b690c753024 <4872161e6fbe4e1783daea8bff79caddfae0fb82 || >=577bbf23b758848f0c4a50d346460b690c753024 <a8abecc638a7feb20b78fabd563b05e30c071331 || >=577bbf23b758848f0c4a50d346460b690c753024 <b5184b3f0e9d4cc47059ba1138c9a73d43d2493f || >=577bbf23b758848f0c4a50d346460b690c753024 <668face37fdb6b6900645dc8777195498541c9a7 || >=577bbf23b758848f0c4a50d346460b690c753024 <bbba3e260a62810a717b4442a3bb96d0ec0f6309 | 4872161e6fbe4e1783daea8bff79caddfae0fb82, a8abecc638a7feb20b78fabd563b05e30c071331, b5184b3f0e9d4cc47059ba1138c9a73d43d2493f, 668face37fdb6b6900645dc8777195498541c9a7, bbba3e260a62810a717b4442a3bb96d0ec0f6309 |
| Linux/Linuxgeneric | 5.4 | Not reported |
| Linux/Linuxgeneric | >=577bbf23b758848f0c4a50d346460b690c753024 <29fce7bcb3b959f6d4fdcdff7d26330152fdf98d || >=577bbf23b758848f0c4a50d346460b690c753024 <7c2c30e282745a83d332c3cf92d1c0bcc491ac54 || >=577bbf23b758848f0c4a50d346460b690c753024 <3c0bd793b0083fd4639ba7f60d1e7db8c8ac459a || >=577bbf23b758848f0c4a50d346460b690c753024 <4872161e6fbe4e1783daea8bff79caddfae0fb82 || >=577bbf23b758848f0c4a50d346460b690c753024 <a8abecc638a7feb20b78fabd563b05e30c071331 || >=577bbf23b758848f0c4a50d346460b690c753024 <b5184b3f0e9d4cc47059ba1138c9a73d43d2493f || >=577bbf23b758848f0c4a50d346460b690c753024 <668face37fdb6b6900645dc8777195498541c9a7 || >=577bbf23b758848f0c4a50d346460b690c753024 <bbba3e260a62810a717b4442a3bb96d0ec0f6309 | 29fce7bcb3b959f6d4fdcdff7d26330152fdf98d, 7c2c30e282745a83d332c3cf92d1c0bcc491ac54, 3c0bd793b0083fd4639ba7f60d1e7db8c8ac459a, 4872161e6fbe4e1783daea8bff79caddfae0fb82, a8abecc638a7feb20b78fabd563b05e30c071331, b5184b3f0e9d4cc47059ba1138c9a73d43d2493f, 668face37fdb6b6900645dc8777195498541c9a7, bbba3e260a62810a717b4442a3bb96d0ec0f6309 |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
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").
Quoted source text, attributed separately from HOL analysis.