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CVE-2025-40139 smc: Use __sk_dst_get() and dst_dev_rcu() in in smc_clc_prfx_set().

🗓️ 12 Nov 2025 10:23:24Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 12 Views

Fix smc clc prefix set UAF by using __sk_dst_get and dev_rcu under rcu_read_lock after kernel_getsockname.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/smc/smc_clc.c"
    ],
    "versions": [
      {
        "version": "a046d57da19f812216f393e7c535f5858f793ac3",
        "lessThan": "0736993bfe5c7a9c744ae3fac62d769dfdae54e1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a046d57da19f812216f393e7c535f5858f793ac3",
        "lessThan": "935d783e5de9b64587f3adb25641dd8385e64ddb",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/smc/smc_clc.c"
    ],
    "versions": [
      {
        "version": "4.11",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.11",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.17.3",
        "lessThanOrEqual": "6.17.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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