CVE-2026-23339

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-23339
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

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/3245801d44a44c090acefe19a12d22d12cac45c5 Patch
https://git.kernel.org/stable/c/33f6b8a96dda045789796c3bcb451c74ac158039 Patch
https://git.kernel.org/stable/c/54f7f0eaafa56b5994cdb5c7967946922c2e1d22 Patch
https://git.kernel.org/stable/c/6d898f943766440cf766d30364e715111c3563b5 Patch
https://git.kernel.org/stable/c/7bd4b0c4779f978a6528c9b7937d2ca18e936e2c Patch
https://git.kernel.org/stable/c/9d448bbab724b94d6c561e1f314656f5b88a7cb3 Patch
https://git.kernel.org/stable/c/b367cb44d919f35b07cd56feffa15e68cd9f53f9 Patch
https://git.kernel.org/stable/c/dcbcccfc5195c9caaa4bb8d31f23c345f00a9e89 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.2:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
History

23 Apr 2026, 21:17

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-401
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:3.2:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
First Time Linux
Linux linux Kernel
References () https://git.kernel.org/stable/c/3245801d44a44c090acefe19a12d22d12cac45c5 - () https://git.kernel.org/stable/c/3245801d44a44c090acefe19a12d22d12cac45c5 - Patch
References () https://git.kernel.org/stable/c/33f6b8a96dda045789796c3bcb451c74ac158039 - () https://git.kernel.org/stable/c/33f6b8a96dda045789796c3bcb451c74ac158039 - Patch
References () https://git.kernel.org/stable/c/54f7f0eaafa56b5994cdb5c7967946922c2e1d22 - () https://git.kernel.org/stable/c/54f7f0eaafa56b5994cdb5c7967946922c2e1d22 - Patch
References () https://git.kernel.org/stable/c/6d898f943766440cf766d30364e715111c3563b5 - () https://git.kernel.org/stable/c/6d898f943766440cf766d30364e715111c3563b5 - Patch
References () https://git.kernel.org/stable/c/7bd4b0c4779f978a6528c9b7937d2ca18e936e2c - () https://git.kernel.org/stable/c/7bd4b0c4779f978a6528c9b7937d2ca18e936e2c - Patch
References () https://git.kernel.org/stable/c/9d448bbab724b94d6c561e1f314656f5b88a7cb3 - () https://git.kernel.org/stable/c/9d448bbab724b94d6c561e1f314656f5b88a7cb3 - Patch
References () https://git.kernel.org/stable/c/b367cb44d919f35b07cd56feffa15e68cd9f53f9 - () https://git.kernel.org/stable/c/b367cb44d919f35b07cd56feffa15e68cd9f53f9 - Patch
References () https://git.kernel.org/stable/c/dcbcccfc5195c9caaa4bb8d31f23c345f00a9e89 - () https://git.kernel.org/stable/c/dcbcccfc5195c9caaa4bb8d31f23c345f00a9e89 - Patch

18 Apr 2026, 09:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/6d898f943766440cf766d30364e715111c3563b5 -
  • () https://git.kernel.org/stable/c/b367cb44d919f35b07cd56feffa15e68cd9f53f9 -
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: nfc: nci: liberar skb en las rutas de error tempranas de nci_transceive nci_transceive() toma posesión del skb pasado por el llamador, pero las rutas de error -EPROTO, -EINVAL y -EBUSY regresan sin liberarlo. Debido a problemas al limpiar NCI_DATA_EXCHANGE corregidos por cambios posteriores, la autoprueba nci/nci_dev alcanza la ruta de error ocasionalmente en NIPA, y kmemleak detecta fugas: objeto sin referencia 0xff11000015ce6a40 (tamaño 640): comm 'nci_dev', pid 3954, jiffies 4295441246 volcado hexadecimal (primeros 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

25 Mar 2026, 11:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-25 11:16

Updated : 2026-04-23 21:17

NVD link : CVE-2026-23339

Mitre link : CVE-2026-23339

CVE.ORG link : CVE-2026-23339

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-401

Missing Release of Memory after Effective Lifetime