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net: kcm: Hold RCU read lock while running BPF parser

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: net: kcm: Hold RCU read lock while running BPF parser kcm_parse_func_strparser() calls bpf_prog_run_pin_on_cpu() which prevents CPU migration, but does not establish an RCU read-side critical section. Consequently, BPF map operations can trigger WARN_ON_ONCE(!bpf_rcu_lock_held()) when called from the KCM strparser program. Hold the RCU read lock while running the program.

Announced Source revision 1
Original source ↗

CVE-2026-90143

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-2026-90143

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": "9b73896a81dc68a638a011877b7344b252f92276",
        "lessThan": "37108861cf7bd909d4a372069bcd61c8f489e232",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9b73896a81dc68a638a011877b7344b252f92276",
        "lessThan": "3c70d27e792a28bca650ddd8a9aa0fe3591ffec5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9b73896a81dc68a638a011877b7344b252f92276",
        "lessThan": "1d26a6e007d46babc7fa76e5a157dccf86cd55c0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9b73896a81dc68a638a011877b7344b252f92276",
        "lessThan": "b0e94ea63dbdcbfec9beb819cd5f8fa584809ef2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9b73896a81dc68a638a011877b7344b252f92276",
        "lessThan": "21526f8a191a3c50622b8c10bd927870d780eae4",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9b73896a81dc68a638a011877b7344b252f92276",
        "lessThan": "292846223eaddba890e40699d2ab82ee5671798c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9b73896a81dc68a638a011877b7344b252f92276",
        "lessThan": "f392affef3c9ce64dfdde794df0579e0a7793440",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9b73896a81dc68a638a011877b7344b252f92276",
        "lessThan": "b0346dd64e4905291cc9c479f2e6cf1884ced4e6",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/kcm/kcmsock.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.9"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.9",
        "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": "6.18.52",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/kcm/kcmsock.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-90143

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#36541 · Revision 1
Added to Heist Feed
Publisher date
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