CVE-2026-23339

MediumCVSS 5.5/10Last modified Oct 15, 2026

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

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-401

Affected software

VendorProductVersions
LinuxLinux>= 6a2968aaf50c7a22fced77a5e24aa636281efca8, < b367cb44d919f35b07cd56feffa15e68cd9f53f9; >= 6a2968aaf50c7a22fced77a5e24aa636281efca8, < 6d898f943766440cf766d30364e715111c3563b5; >= 6a2968aaf50c7a22fced77a5e24aa636281efca8, < 33f6b8a96dda045789796c3bcb451c74ac158039; >= 6a2968aaf50c7a22fced77a5e24aa636281efca8, < dcbcccfc5195c9caaa4bb8d31f23c345f00a9e89; >= 6a2968aaf50c7a22fced77a5e24aa636281efca8, < 3245801d44a44c090acefe19a12d22d12cac45c5; >= 6a2968aaf50c7a22fced77a5e24aa636281efca8, < 9d448bbab724b94d6c561e1f314656f5b88a7cb3; >= 6a2968aaf50c7a22fced77a5e24aa636281efca8, < 54f7f0eaafa56b5994cdb5c7967946922c2e1d22; >= 6a2968aaf50c7a22fced77a5e24aa636281efca8, < 7bd4b0c4779f978a6528c9b7937d2ca18e936e2c
LinuxLinux3.2
SiemensSIMATIC S7-1500 TM MFP - GNU/Linux subsystem< *

References

Timeline

Published
Mar 25, 2026
Last modified
Oct 15, 2026
NVD status
Modified

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