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signal: avoid shared siginfo namespace rewrites

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: signal: avoid shared siginfo namespace rewrites send_signal_locked() rewrites sender ids for the target namespace. Group sends reuse the same siginfo, so one recipient can affect the next. Copy the siginfo before changing it.

Announced Source revision 1
Original source ↗

CVE-2026-93222

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-2026-93222

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": "7a0cf094944e2540758b7f957eb6846d5126f535",
        "lessThan": "e015d1ac6b43a23c52c5163299414ae77d7d4ae0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
        "lessThan": "4ee7c4e4719a825052f42f02ec159b5b42b68fbc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
        "lessThan": "148b0dae2a1755beb873a2aab51fb191414f068c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
        "lessThan": "6b1de022304ef85284c5933a5fb8492f6f54efc9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
        "lessThan": "03c8761e75d1619906bb503686f9cc1dfc6a67f4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
        "lessThan": "a246da20c8e4ae4319511c698b9f26ad0ad1769f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
        "lessThan": "b655c2040ce836afad5643842543567b31f8c11d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "7a0cf094944e2540758b7f957eb6846d5126f535",
        "lessThan": "d19cdc167e696714509e87d3f7ae765b6e164589",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e897dd22800f02bd48aefb1511fff0b2ce96e94c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2f0e9eed11ca778d0ec5507a739c28472fd4ca20",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "5.1.20",
        "lessThan": "5.2",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.2.3",
        "lessThan": "5.3",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "kernel/signal.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.3"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.3",
        "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": "6.12.109",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.50",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.4",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "kernel/signal.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-93222

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#37925 · Revision 1
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Publisher date
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