CVE-2026-89879

CVE CVE-2026-89879EUVD EUVD-2026-80479Published 2026-09-16T10:31:45.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: media: s2255: bound JPEG frame size before copying into the buffer s2255_fillbuff() memcpy()s vc->jpg_size bytes of a captured JPEG/MJPEG frame into the vb2 plane. vc->jpg_size is taken verbatim from the S2255_MARKER_FRAME header the device sends (pdword[4] in save_frame()) and, unlike the frame payload length just above it, is never bounded: payload = le32_to_cpu(pdword[3]); if (payload > vc->req_image_size) /* payload is checked ... */ return -EINVAL; vc->pkt_size = payload; vc->jpg_size = le32_to_cpu(pdword[4]); /* ... jpg_size is not */ A malicious or malfunctioning device can therefore report a jpg_size larger than the destination vb2 plane, and the memcpy() writes past it. jpg_size is a signed int, so a value with the top bit set also turns into a huge length. Reject a frame whose jpg_size is negative or exceeds the plane size before copying it.

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 38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <d2ecaaab6a4f165abb54cdf61be60030b5782bf8; 38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <2542516a147bfad740e7e411c251b639fad260ff; patch: 7.2.5; patch: 6.12.110; patch: 0; patch: 6.6.157; patch: 5.10.270; patch: 6.1.188; 38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <4b6f7bccc6559ae5c54573c284fe76eafc9989b2; 38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <79f58f900dd221ab04ea74bf4eaf79fa3b0fcc77; patch: 6.18.51; 38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <dd739517560c8d0ec4463a53e717bf40b988d7da; 38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <32a595dd3e8634544e5cfbc47f906dff3d3c1ef8; 38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <68d664f1b4efe525e99154b7058fcb0378bdaff7; patch: 7.3-rc1; patch: 5.15.221; 2.6.27; 38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7 <e504cc888f42999dd76b6a43788c422610f2aad2

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

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Linux — Linux

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