Answer in brief
CVE-2026-89724 records a High severity (CVSS 7.8) vulnerability in media: vicodec: fix out-of-bounds write in FWHT encoder. 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 | >=16ecf6dff97ce0194a7126e26159492668d47a7e <84cfebf7f4229d748cca8eb9c4e1f1c4099d3ab7 || >=16ecf6dff97ce0194a7126e26159492668d47a7e <8c14472431e27f13661d0db9d837156eaced0ecb || >=16ecf6dff97ce0194a7126e26159492668d47a7e <b95315ffc66b39856396c1043618bb4e4d5785ba || >=16ecf6dff97ce0194a7126e26159492668d47a7e <cf4500ebf6fb57bf4ab83c3dd349a40257dbe2a9 | 84cfebf7f4229d748cca8eb9c4e1f1c4099d3ab7, 8c14472431e27f13661d0db9d837156eaced0ecb, b95315ffc66b39856396c1043618bb4e4d5785ba, cf4500ebf6fb57bf4ab83c3dd349a40257dbe2a9 |
| Linux/Linuxgeneric | 5.0 | Not reported |
| Linux/Linuxgeneric | >=16ecf6dff97ce0194a7126e26159492668d47a7e <f7ae26c100a6c26c2a166d2c41e73188067b36bd || >=16ecf6dff97ce0194a7126e26159492668d47a7e <6ea647e76c44387d5c1c635df4604c2154d9060e || >=16ecf6dff97ce0194a7126e26159492668d47a7e <d40838a63f2bd6a3df0a6cdd8ff1d5c6366e8fff || >=16ecf6dff97ce0194a7126e26159492668d47a7e <e21cccc29b840930cd9dcfdf1139658063a681af || >=16ecf6dff97ce0194a7126e26159492668d47a7e <84cfebf7f4229d748cca8eb9c4e1f1c4099d3ab7 || >=16ecf6dff97ce0194a7126e26159492668d47a7e <8c14472431e27f13661d0db9d837156eaced0ecb || >=16ecf6dff97ce0194a7126e26159492668d47a7e <b95315ffc66b39856396c1043618bb4e4d5785ba || >=16ecf6dff97ce0194a7126e26159492668d47a7e <cf4500ebf6fb57bf4ab83c3dd349a40257dbe2a9 | f7ae26c100a6c26c2a166d2c41e73188067b36bd, 6ea647e76c44387d5c1c635df4604c2154d9060e, d40838a63f2bd6a3df0a6cdd8ff1d5c6366e8fff, e21cccc29b840930cd9dcfdf1139658063a681af, 84cfebf7f4229d748cca8eb9c4e1f1c4099d3ab7, 8c14472431e27f13661d0db9d837156eaced0ecb, b95315ffc66b39856396c1043618bb4e4d5785ba, cf4500ebf6fb57bf4ab83c3dd349a40257dbe2a9 |
Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 11, 2026
In the Linux kernel, the following vulnerability has been resolved: media: vicodec: fix out-of-bounds write in FWHT encoder vidioc_s_fmt_vid_out() sizes the encoder CAPTURE buffer from the compressed descriptor pixfmt_fwht, whose sizeimage_mult is 3: coded_w * coded_h * 3 + sizeof(struct fwht_cframe_hdr). fwht_encode_frame() encodes one plane per component, and an incompressible plane takes the FWHT_FRAME_UNENCODED path in encode_plane(), copying the plane verbatim. For a 4-component pixel format all four planes are full resolution (width_div == height_div == 1), so a frame that forces every plane through the unencoded fallback writes sizeof(struct fwht_cframe_hdr) + 4 * coded_w * coded_h bytes, overrunning the plane by coded_w * coded_h, which can result in corruption of adjacent kernel heap memory. Bump pixfmt_fwht.sizeimage_mult from 3 to 4, matching the largest components_num among the supported raw formats, so the capture buffer is always large enough for the unencoded fallback.
Quoted source text, attributed separately from HOL analysis.