CVE-2026-89724
CVE CVE-2026-89724EUVD EUVD-2026-76636Published 2026-09-11T19:46:35.000ZLast changed 2026-09-14T12:02:14.000ZCVSS 7.8
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 5.10.270; 16ecf6dff97ce0194a7126e26159492668d47a7e <f7ae26c100a6c26c2a166d2c41e73188067b36bd; 16ecf6dff97ce0194a7126e26159492668d47a7e <8c14472431e27f13661d0db9d837156eaced0ecb; 16ecf6dff97ce0194a7126e26159492668d47a7e <84cfebf7f4229d748cca8eb9c4e1f1c4099d3ab7; 5.0; patch: 6.12.109; patch: 5.15.221; patch: 7.3-rc1; patch: 6.1.188; 16ecf6dff97ce0194a7126e26159492668d47a7e <e21cccc29b840930cd9dcfdf1139658063a681af; patch: 7.2.4; 16ecf6dff97ce0194a7126e26159492668d47a7e <6ea647e76c44387d5c1c635df4604c2154d9060e; patch: 6.6.157; 16ecf6dff97ce0194a7126e26159492668d47a7e <b95315ffc66b39856396c1043618bb4e4d5785ba; patch: 6.18.50; 16ecf6dff97ce0194a7126e26159492668d47a7e <cf4500ebf6fb57bf4ab83c3dd349a40257dbe2a9; patch: 0; 16ecf6dff97ce0194a7126e26159492668d47a7e <d40838a63f2bd6a3df0a6cdd8ff1d5c6366e8fff
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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