CVE-2026-23339
nfc: nci: free skb on nci_transceive early error paths
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
Produtos afetados
Linux · LinuxQuer saber se a sua infraestrutura está exposta a isto?
Falar com a TrueHacking →Referências
https://git.kernel.org/stable/c/3245801d44a44c090acefe19a12d22d12cac45c5https://git.kernel.org/stable/c/33f6b8a96dda045789796c3bcb451c74ac158039https://git.kernel.org/stable/c/54f7f0eaafa56b5994cdb5c7967946922c2e1d22https://git.kernel.org/stable/c/6d898f943766440cf766d30364e715111c3563b5https://git.kernel.org/stable/c/7bd4b0c4779f978a6528c9b7937d2ca18e936e2chttps://git.kernel.org/stable/c/9d448bbab724b94d6c561e1f314656f5b88a7cb3https://git.kernel.org/stable/c/b367cb44d919f35b07cd56feffa15e68cd9f53f9https://git.kernel.org/stable/c/dcbcccfc5195c9caaa4bb8d31f23c345f00a9e89