CVE-2026-23339General(linux / linux_kernel)

LOWCVSS 5.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-401

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • linux_kernel

Threat summary

  • 3 mentions across 3 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 1 signal
  • General: 2 classified signals
  • Disclosure: 1 classified signal
  • Peaked 2d ago at 1 mentions (2026-03-25); latest day: 1
  • 3 total mentions across 3 days

Affected systems

Vendors
Products
linux_kernel

2 versions affected across 1 product

Deep dive

Activity timeline3 mentions / 3d
00111Mentions · 2026-03-25: 1Mentions · 2026-03-26: 1Mentions · 2026-03-27: 1Technical Details · 2026-03-26: 103-2503-2603-27
Signal classification2 categories
General
266.7%
Disclosure
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-03-251
Disclosure1
2026-03-261
General1
2026-03-271
General1
Full discourse3 posts
  • CVEarity@CVEarity
    General

    ⚡ New CVE Alert: CVE-2026-23339 🚨 Risk Level: Unknown 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-23339 #CVE-2026-23339 #CVE   #CyberSecurity #InfoSec https://t.co/zEuTPHT53P

    Post summary

    The tweet merely announces the existence of CVE‑2026‑23339 with minimal details and an NVD link, providing no actionable information.

    0000031
    123 followersView on X
  • WindowsForum@windowsforum
    General

    🧠 Kernel bug: nci_transceive grabs skb “ownership” then bails early on -EPROTO/-EINVAL/-EBUSY like it forgot cleanup. Small? Sure. Enjoy your slow memory leak. https://windowsforum.com/threads/cve-2026-23339-kernel-leak-nci_transceive-ownership-bug.407537/ #MemoryLeak #LinuxKernel #CveSecurity #NfcNci https://t.co/cZhEUvTCYH

    Post summary

    The post highlights a kernel memory‑leak bug in nci_transceive, describing technical details but offering no PoC, patch, or evidence of active exploitation.

    0000058
    1.0K followersView on X
  • CVE@CVEnew
    Disclosure

    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 s… https://www.cve.org/CVERecord?id=CVE-2026-23339

    Post summary

    The text announces that CVE-2026-23339 has been resolved in the Linux kernel, but provides no further technical or exploit information.

    00000132
    56.8K followersView on X
CPE platform detail9 entries

9 of 9 entries

PartVendorProductVersionTarget SWTarget HW
OSlinuxlinux_kernel---
OSlinuxlinux_kernel3.2--
OSlinuxlinux_kernel7.0--
OSlinuxlinux_kernel7.0--
OSlinuxlinux_kernel7.0--
OSlinuxlinux_kernel7.0--
OSlinuxlinux_kernel7.0--
OSlinuxlinux_kernel7.0--
OSlinuxlinux_kernel7.0--

Explore more