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media: s2255: bound JPEG frame size before copying into the buffer

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

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
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