media: s2255: bound JPEG frame size before copying into the buffer
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.
CVE-2026-89879
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-89879
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7",
"lessThan": "32a595dd3e8634544e5cfbc47f906dff3d3c1ef8",
"versionType": "git"
},
{
"status": "affected",
"version": "38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7",
"lessThan": "4b6f7bccc6559ae5c54573c284fe76eafc9989b2",
"versionType": "git"
},
{
"status": "affected",
"version": "38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7",
"lessThan": "2542516a147bfad740e7e411c251b639fad260ff",
"versionType": "git"
},
{
"status": "affected",
"version": "38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7",
"lessThan": "79f58f900dd221ab04ea74bf4eaf79fa3b0fcc77",
"versionType": "git"
},
{
"status": "affected",
"version": "38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7",
"lessThan": "d2ecaaab6a4f165abb54cdf61be60030b5782bf8",
"versionType": "git"
},
{
"status": "affected",
"version": "38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7",
"lessThan": "68d664f1b4efe525e99154b7058fcb0378bdaff7",
"versionType": "git"
},
{
"status": "affected",
"version": "38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7",
"lessThan": "dd739517560c8d0ec4463a53e717bf40b988d7da",
"versionType": "git"
},
{
"status": "affected",
"version": "38f993ad8b1fe4caf9e989caf6e2a25aff3bbaf7",
"lessThan": "e504cc888f42999dd76b6a43788c422610f2aad2",
"versionType": "git"
}
],
"programFiles": [
"drivers/media/usb/s2255/s2255drv.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.27"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.27",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/media/usb/s2255/s2255drv.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89879
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36328 · Revision 1
- Added to Heist Feed
- Publisher date