🛡️ CVE-2026-23330 — kernel

🟡 CVSS 5.5 — Medium ✅ No Known Exploit NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

nfc: nci: complete pending data exchange on device close

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

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Affected software

CVE-2026-23330 is recorded against 2 packages.

  • kernel (from 6.19.0 up to 6.19.7)
  • linux-kernel

Timeline and source

Published on 25 March 2026 and last revised on 15 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2026-23330 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Medium
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2026-03-25
Updated 2026-08-12
Modified 2026-07-15

Affected Packages

Software From version Fixed in
kernel 6.19.0 6.19.7
linux-kernel — —

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