{"cve":"CVE-2026-23339","nvd":{"published":"2026-03-25T11:16:31.670","modified":"2026-10-15T02:18:50.443","status":"Modified","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","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-401"],"references":["https://git.kernel.org/stable/c/3245801d44a44c090acefe19a12d22d12cac45c5","https://git.kernel.org/stable/c/33f6b8a96dda045789796c3bcb451c74ac158039","https://git.kernel.org/stable/c/54f7f0eaafa56b5994cdb5c7967946922c2e1d22","https://git.kernel.org/stable/c/6d898f943766440cf766d30364e715111c3563b5","https://git.kernel.org/stable/c/7bd4b0c4779f978a6528c9b7937d2ca18e936e2c"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:28:18.033120106+00:00"},"epss":{"cve":"CVE-2026-23339","score":0.0013,"percentile":0.02619,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}