{"id":"CVE-2026-23339","state":"PUBLISHED","title":"nfc: nci: free skb on nci_transceive early error paths","description":"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","publishedAt":"2026-03-25T10:27:28.073Z","updatedAt":"2026-10-15T01:14:10.367Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"b367cb44d919f35b07cd56feffa15e68cd9f53f9","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"6d898f943766440cf766d30364e715111c3563b5","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"33f6b8a96dda045789796c3bcb451c74ac158039","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"dcbcccfc5195c9caaa4bb8d31f23c345f00a9e89","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"3245801d44a44c090acefe19a12d22d12cac45c5","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"9d448bbab724b94d6c561e1f314656f5b88a7cb3","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"54f7f0eaafa56b5994cdb5c7967946922c2e1d22","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"7bd4b0c4779f978a6528c9b7937d2ca18e936e2c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/nci/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.2","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.167","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.77","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.17","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.7","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/nci/core.c"]}],"references":["https://git.kernel.org/stable/c/b367cb44d919f35b07cd56feffa15e68cd9f53f9","https://git.kernel.org/stable/c/6d898f943766440cf766d30364e715111c3563b5","https://git.kernel.org/stable/c/33f6b8a96dda045789796c3bcb451c74ac158039","https://git.kernel.org/stable/c/dcbcccfc5195c9caaa4bb8d31f23c345f00a9e89","https://git.kernel.org/stable/c/3245801d44a44c090acefe19a12d22d12cac45c5","https://git.kernel.org/stable/c/9d448bbab724b94d6c561e1f314656f5b88a7cb3","https://git.kernel.org/stable/c/54f7f0eaafa56b5994cdb5c7967946922c2e1d22","https://git.kernel.org/stable/c/7bd4b0c4779f978a6528c9b7937d2ca18e936e2c","https://cert-portal.siemens.com/productcert/html/ssa-784472.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23339.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23339","state":"PUBLISHED","datePublished":"2026-03-25T10:27:28.073Z","dateUpdated":"2026-10-15T01:14:10.367Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-01-13T15:37:45.997Z"},"containers":{"cna":{"title":"nfc: nci: free skb on nci_transceive early error paths","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"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"b367cb44d919f35b07cd56feffa15e68cd9f53f9","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"6d898f943766440cf766d30364e715111c3563b5","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"33f6b8a96dda045789796c3bcb451c74ac158039","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"dcbcccfc5195c9caaa4bb8d31f23c345f00a9e89","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"3245801d44a44c090acefe19a12d22d12cac45c5","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"9d448bbab724b94d6c561e1f314656f5b88a7cb3","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"54f7f0eaafa56b5994cdb5c7967946922c2e1d22","versionType":"git"},{"version":"6a2968aaf50c7a22fced77a5e24aa636281efca8","status":"affected","lessThan":"7bd4b0c4779f978a6528c9b7937d2ca18e936e2c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/nci/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.2","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.167","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.77","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.17","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.7","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/nfc/nci/core.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/b367cb44d919f35b07cd56feffa15e68cd9f53f9"},{"url":"https://git.kernel.org/stable/c/6d898f943766440cf766d30364e715111c3563b5"},{"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:04:55.743Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.1.167"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.6.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.12.77"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.18.17"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"6.19.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.2","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"*","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}],"providerMetadata":{"shortName":"siemens-SADP","orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","dateUpdated":"2026-10-15T01:14:10.367Z"},"x_adpType":"supplier"}]}}}