# CVE-2026-23330: nfc: nci: complete pending data exchange on device close

CVE-2026-23330 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-23330, released March 25, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-23330
- Priority: High
- CVSS: 7.1 (Important)
- EPSS: 0.0013
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 25, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23330

## Description

In the Linux kernel, the following vulnerability has been resolved:  nfc: nci: complete pending data exchange on device close  In nci_close_device(), complete any pending data exchange before closing. The data exchange callback (e.g. rawsock_data_exchange_complete) holds a socket reference.  NIPA occasionally hits this leak:  unreferenced object 0xff1100000f435000 (size 2048):   comm "nci_dev", pid 3954, jiffies 4295441245   hex dump (first 32 bytes):     00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................     27 00 01 40 00 00 00 00 00 00 00 00 00 00 00 00  '..@............   backtrace (crc ec2b3c5):     __kmalloc_noprof+0x4db/0x730     sk_prot_alloc.isra.0+0xe4/0x1d0     sk_alloc+0x36/0x760     rawsock_create+0xd1/0x540     nfc_sock_create+0x11f/0x280     __sock_create+0x22d/0x630     __sys_socket+0x115/0x1d0     __x64_sys_socket+0x72/0xd0     do_syscall_64+0x117/0xfc0     entry_SYSCALL_64_after_hwframe+0x4b/0x53

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.85-1 | [DEBIAN-CVE-2026-23330](https://patchblox.com/security/data/fix/linux/debian-cve-2026-23330.md) | Mar 25, 2026 |
| Linux | linux Debian 14 | 6.19.8-1 | [DEBIAN-CVE-2026-23330](https://patchblox.com/security/data/fix/linux/debian-cve-2026-23330.md) | Mar 25, 2026 |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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