CVE-2026-23339nfc: nci: free skb on nci_transceive early error paths
- 5.5MediumCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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
Timeline
ID reserved
By Linux
- 2 months later
· 2 months later
Published
- 7 months later
· 7 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 6a2968aaf50c7a22fced77a5e24aa636281efca8 – < b367cb44d919f35b07cd56feffa15e68cd9f53f9
- affected 6a2968aaf50c7a22fced77a5e24aa636281efca8 – < 6d898f943766440cf766d30364e715111c3563b5
- affected 6a2968aaf50c7a22fced77a5e24aa636281efca8 – < 33f6b8a96dda045789796c3bcb451c74ac158039
- affected 6a2968aaf50c7a22fced77a5e24aa636281efca8 – < dcbcccfc5195c9caaa4bb8d31f23c345f00a9e89
- affected 6a2968aaf50c7a22fced77a5e24aa636281efca8 – < 3245801d44a44c090acefe19a12d22d12cac45c5
- affected 6a2968aaf50c7a22fced77a5e24aa636281efca8 – < 9d448bbab724b94d6c561e1f314656f5b88a7cb3
- affected 6a2968aaf50c7a22fced77a5e24aa636281efca8 – < 54f7f0eaafa56b5994cdb5c7967946922c2e1d22
- affected 6a2968aaf50c7a22fced77a5e24aa636281efca8 – < 7bd4b0c4779f978a6528c9b7937d2ca18e936e2c
- affected 3.2
- unaffected < 3.2
- unaffected 5.10.253 – ≤ 5.10.*
- unaffected 5.15.203 – ≤ 5.15.*
- unaffected 6.1.167 – ≤ 6.1.*
- unaffected 6.6.130 – ≤ 6.6.*
- unaffected 6.12.77 – ≤ 6.12.*
- unaffected 6.18.17 – ≤ 6.18.*
- unaffected 6.19.7 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References9
- https://git.kernel.org/stable/c/b367cb44d919f35b07cd56feffa15e68cd9f53f9 (opens in a new tab)
- https://git.kernel.org/stable/c/6d898f943766440cf766d30364e715111c3563b5 (opens in a new tab)
- https://git.kernel.org/stable/c/33f6b8a96dda045789796c3bcb451c74ac158039 (opens in a new tab)
- https://git.kernel.org/stable/c/dcbcccfc5195c9caaa4bb8d31f23c345f00a9e89 (opens in a new tab)
- https://git.kernel.org/stable/c/3245801d44a44c090acefe19a12d22d12cac45c5 (opens in a new tab)
- https://git.kernel.org/stable/c/9d448bbab724b94d6c561e1f314656f5b88a7cb3 (opens in a new tab)
- https://git.kernel.org/stable/c/54f7f0eaafa56b5994cdb5c7967946922c2e1d22 (opens in a new tab)
- https://git.kernel.org/stable/c/7bd4b0c4779f978a6528c9b7937d2ca18e936e2c (opens in a new tab)
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-15305 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-23339)Record last updated .