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media: video-i2c: fix kthread error pointer left in kthread_vid_cap on failure

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: media: video-i2c: fix kthread error pointer left in kthread_vid_cap on failure kthread_run() returns an ERR_PTR on failure, not NULL. When start_streaming() fails, data->kthread_vid_cap is left holding this error pointer instead of being cleared. This causes two subsequent bugs: 1. A future call to start_streaming() sees a non-NULL kthread_vid_cap and returns 0 (success) immediately, without actually starting the capture thread. 2. A call to stop_streaming() checks 'kthread_vid_cap == NULL' which is false for an error pointer, and proceeds to call kthread_stop() on the error pointer, leading to a kernel crash. Fix this by resetting kthread_vid_cap to NULL on failure before jumping to the error path.

Announced Group revision 1
Original source ↗

CVE-2026-89871

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-2026-89871

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": "5cebaac609744414463d1ecc28fdecd26c1b9bc1",
        "lessThan": "db0f4531aa55cfb0171684ebfffe3ff04b79d5a8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cebaac609744414463d1ecc28fdecd26c1b9bc1",
        "lessThan": "0fac63cac6689588da530764ccb6ba55ee8e4d8b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cebaac609744414463d1ecc28fdecd26c1b9bc1",
        "lessThan": "5c35d380bea60503c4fe0986fe1de6a3263282b3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cebaac609744414463d1ecc28fdecd26c1b9bc1",
        "lessThan": "3d1b10d81fe54852ed953f4129577b733bbd6907",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cebaac609744414463d1ecc28fdecd26c1b9bc1",
        "lessThan": "968c5213e34c48d35febdfd09cf3dc58ad039140",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cebaac609744414463d1ecc28fdecd26c1b9bc1",
        "lessThan": "52fd9d80c0cea7bf09e7ee36cad316e5c39b7fe6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cebaac609744414463d1ecc28fdecd26c1b9bc1",
        "lessThan": "0e7f2cd72a4f9268ee09a13b13f3339e7cc71557",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5cebaac609744414463d1ecc28fdecd26c1b9bc1",
        "lessThan": "76e379754ba618989f6215be608d5c04774a611d",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/media/i2c/video-i2c.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.18"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.18",
        "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/i2c/video-i2c.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-89871

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#36320 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-89871 · Revision 1Source updated