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nfc: llcp: read llcp_sock->local under the socket lock in getsockopt

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: nfc: llcp: read llcp_sock->local under the socket lock in getsockopt nfc_llcp_getsockopt() read llcp_sock->local before lock_sock(sk) and then dereferenced the cached pointer inside the locked region. llcp_sock_bind() assigns and clears llcp_sock->local under the same socket lock, dropping the last reference on its error path. A getsockopt() racing an in-flight bind() can observe the pointer, block on lock_sock(), and then dereference a freed nfc_llcp_local once bind() has unwound. Move the llcp_sock->local read and the NULL check inside the lock_sock(sk) region so bind() cannot mutate or free the pointer between the load and the use.

Announced Source revision 1
Original source ↗

CVE-2026-90225

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-2026-90225

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": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
        "lessThan": "56fd158fef20268f48db6cdfe5d722e930134eda",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
        "lessThan": "8ba8cec0586727cc135ca4827921fc7b52946d71",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
        "lessThan": "ed5240bab3468988077fe8bf29b935eaecc9ff89",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
        "lessThan": "fe65727a4a21b11c18eebae1338482767a897b76",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
        "lessThan": "2d8ac24565be85bf56580b87bf1b874d35625eb5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
        "lessThan": "156e65bd29307f5053835bff60bc1ba342fa010f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
        "lessThan": "d1b73962675cdc5a58e2707e25b548d8b495fde0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "26fd76cab2e61cedc5c25f7151fb31b57ddc53c7",
        "lessThan": "36812527052c5bfb1ec6c1e292d67a5bf76b750f",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/nfc/llcp_sock.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.10"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.10",
        "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/nfc/llcp_sock.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-90225

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#36596 · Revision 1
Added to Heist Feed
Publisher date
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