CVE-2026-23339 (GCVE-0-2026-23339)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-03-25 10:27
VLAI?
Title
nfc: nci: free skb on nci_transceive early error paths
Summary
In the Linux kernel, the following vulnerability has been resolved: nfc: nci: free skb on nci_transceive early error paths nci_transceive() takes ownership of the skb passed by the caller, but the -EPROTO, -EINVAL, and -EBUSY error paths return without freeing it. Due to issues clearing NCI_DATA_EXCHANGE fixed by subsequent changes the nci/nci_dev selftest hits the error path occasionally in NIPA, and kmemleak detects leaks: unreferenced object 0xff11000015ce6a40 (size 640): comm "nci_dev", pid 3954, jiffies 4295441246 hex dump (first 32 bytes): 6b 6b 6b 6b 00 a4 00 0c 02 e1 03 6b 6b 6b 6b 6b kkkk.......kkkkk 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk backtrace (crc 7c40cc2a): kmem_cache_alloc_node_noprof+0x492/0x630 __alloc_skb+0x11e/0x5f0 alloc_skb_with_frags+0xc6/0x8f0 sock_alloc_send_pskb+0x326/0x3f0 nfc_alloc_send_skb+0x94/0x1d0 rawsock_sendmsg+0x162/0x4c0 do_syscall_64+0x117/0xfc0
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 6a2968aaf50c7a22fced77a5e24aa636281efca8 , < 33f6b8a96dda045789796c3bcb451c74ac158039 (git)
Affected: 6a2968aaf50c7a22fced77a5e24aa636281efca8 , < dcbcccfc5195c9caaa4bb8d31f23c345f00a9e89 (git)
Affected: 6a2968aaf50c7a22fced77a5e24aa636281efca8 , < 3245801d44a44c090acefe19a12d22d12cac45c5 (git)
Affected: 6a2968aaf50c7a22fced77a5e24aa636281efca8 , < 9d448bbab724b94d6c561e1f314656f5b88a7cb3 (git)
Affected: 6a2968aaf50c7a22fced77a5e24aa636281efca8 , < 54f7f0eaafa56b5994cdb5c7967946922c2e1d22 (git)
Affected: 6a2968aaf50c7a22fced77a5e24aa636281efca8 , < 7bd4b0c4779f978a6528c9b7937d2ca18e936e2c (git)
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    Linux Linux Affected: 3.2
Unaffected: 0 , < 3.2 (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.77 , ≤ 6.12.* (semver)
Unaffected: 6.18.17 , ≤ 6.18.* (semver)
Unaffected: 6.19.7 , ≤ 6.19.* (semver)
Unaffected: 7.0-rc3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/nfc/nci/core.c"
          ],
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          "vendor": "Linux",
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        },
        {
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          "product": "Linux",
          "programFiles": [
            "net/nfc/nci/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.2"
            },
            {
              "lessThan": "3.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.167",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.130",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.77",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.167",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.130",
                  "versionStartIncluding": "3.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.77",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.7",
                  "versionStartIncluding": "3.2",
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                }
              ],
              "negate": false,
              "operator": "OR"
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: free skb on nci_transceive early error paths\n\nnci_transceive() takes ownership of the skb passed by the caller,\nbut the -EPROTO, -EINVAL, and -EBUSY error paths return without\nfreeing it.\n\nDue to issues clearing NCI_DATA_EXCHANGE fixed by subsequent changes\nthe nci/nci_dev selftest hits the error path occasionally in NIPA,\nand kmemleak detects leaks:\n\nunreferenced object 0xff11000015ce6a40 (size 640):\n  comm \"nci_dev\", pid 3954, jiffies 4295441246\n  hex dump (first 32 bytes):\n    6b 6b 6b 6b 00 a4 00 0c 02 e1 03 6b 6b 6b 6b 6b  kkkk.......kkkkk\n    6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk\n  backtrace (crc 7c40cc2a):\n    kmem_cache_alloc_node_noprof+0x492/0x630\n    __alloc_skb+0x11e/0x5f0\n    alloc_skb_with_frags+0xc6/0x8f0\n    sock_alloc_send_pskb+0x326/0x3f0\n    nfc_alloc_send_skb+0x94/0x1d0\n    rawsock_sendmsg+0x162/0x4c0\n    do_syscall_64+0x117/0xfc0"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-25T10:27:28.073Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/33f6b8a96dda045789796c3bcb451c74ac158039"
        },
        {
          "url": "https://git.kernel.org/stable/c/dcbcccfc5195c9caaa4bb8d31f23c345f00a9e89"
        },
        {
          "url": "https://git.kernel.org/stable/c/3245801d44a44c090acefe19a12d22d12cac45c5"
        },
        {
          "url": "https://git.kernel.org/stable/c/9d448bbab724b94d6c561e1f314656f5b88a7cb3"
        },
        {
          "url": "https://git.kernel.org/stable/c/54f7f0eaafa56b5994cdb5c7967946922c2e1d22"
        },
        {
          "url": "https://git.kernel.org/stable/c/7bd4b0c4779f978a6528c9b7937d2ca18e936e2c"
        }
      ],
      "title": "nfc: nci: free skb on nci_transceive early error paths",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23339",
    "datePublished": "2026-03-25T10:27:28.073Z",
    "dateReserved": "2026-01-13T15:37:45.997Z",
    "dateUpdated": "2026-03-25T10:27:28.073Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23339\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-03-25T11:16:31.670\",\"lastModified\":\"2026-03-25T15:41:33.977\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnfc: nci: free skb on nci_transceive early error paths\\n\\nnci_transceive() takes ownership of the skb passed by the caller,\\nbut the -EPROTO, -EINVAL, and -EBUSY error paths return without\\nfreeing it.\\n\\nDue to issues clearing NCI_DATA_EXCHANGE fixed by subsequent changes\\nthe nci/nci_dev selftest hits the error path occasionally in NIPA,\\nand kmemleak detects leaks:\\n\\nunreferenced object 0xff11000015ce6a40 (size 640):\\n  comm \\\"nci_dev\\\", pid 3954, jiffies 4295441246\\n  hex dump (first 32 bytes):\\n    6b 6b 6b 6b 00 a4 00 0c 02 e1 03 6b 6b 6b 6b 6b  kkkk.......kkkkk\\n    6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk\\n  backtrace (crc 7c40cc2a):\\n    kmem_cache_alloc_node_noprof+0x492/0x630\\n    __alloc_skb+0x11e/0x5f0\\n    alloc_skb_with_frags+0xc6/0x8f0\\n    sock_alloc_send_pskb+0x326/0x3f0\\n    nfc_alloc_send_skb+0x94/0x1d0\\n    rawsock_sendmsg+0x162/0x4c0\\n    do_syscall_64+0x117/0xfc0\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3245801d44a44c090acefe19a12d22d12cac45c5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/33f6b8a96dda045789796c3bcb451c74ac158039\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/54f7f0eaafa56b5994cdb5c7967946922c2e1d22\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7bd4b0c4779f978a6528c9b7937d2ca18e936e2c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9d448bbab724b94d6c561e1f314656f5b88a7cb3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dcbcccfc5195c9caaa4bb8d31f23c345f00a9e89\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.