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nfc: rawsock: cancel tx_work before socket teardown

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: nfc: rawsock: cancel tx_work before socket teardown In rawsock_release(), cancel any pending tx_work and purge the write queue before orphaning the socket. rawsock_tx_work runs on the system workqueue and calls nfc_data_exchange which dereferences the NCI device. Without synchronization, tx_work can race with socket and device teardown when a process is killed (e.g. by SIGKILL), leading to use-after-free or leaked references. Set SEND_SHUTDOWN first so that if tx_work is already running it will see the flag and skip transmitting, then use cancel_work_sync to wait for any in-progress execution to finish, and finally purge any remaining queued skbs.

Announced Source revision 1
Original source ↗

CVE-2026-23372

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-2026-23372

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": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
        "lessThan": "9b2d23cd09e1cb56bdf0e4d5614703094159f16c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
        "lessThan": "cdeed45ce8c92defd057f7d67ee9a69374d8fa16",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
        "lessThan": "3ae592ed91bb4b6b51df256b51045c13d2656049",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
        "lessThan": "722a28b635ec281bb08a23885223526d8e7d6526",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
        "lessThan": "78141b8832e16d80d09cbefb4258612db0777a24",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
        "lessThan": "edc988613def90c5b558e025b1b423f48007be06",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
        "lessThan": "da4515fc8263c5933ed605e396af91079806dc45",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "23b7869c0fd08d73c9f83a2db88a13312d6198bb",
        "lessThan": "d793458c45df2aed498d7f74145eab7ee22d25aa",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/nfc/rawsock.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.1"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.1",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.253",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.203",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.167",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.130",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.77",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.17",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19.7",
        "versionType": "semver",
        "lessThanOrEqual": "6.19.*"
      },
      {
        "status": "unaffected",
        "version": "7.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/nfc/rawsock.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-23372

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#27241 · Revision 1
Added to Heist Feed
Publisher date
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