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CVE-2026-23258— net: liquidio: Initialize netdev pointer before queue setup

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于netdev指针初始化顺序不当，可能导致内存泄漏。

AI Predicted 3.7 Difficulty: Moderate EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux c33c997346c34ea7b89aec99524ad9632a2f1e0c< be109646cdaecab262f6276303b1763468c94378 affected
c33c997346c34ea7b89aec99524ad9632a2f1e0c< c81a8515fb8c8fb5d0dbc21f48337494bf1d60df affected
c33c997346c34ea7b89aec99524ad9632a2f1e0c< a0e57c0b68c9e6f9a8fd7c1167861a5a730eb2f4 affected
c33c997346c34ea7b89aec99524ad9632a2f1e0c< c0ed6c77ec34050971fd0df2a94dfdea66d09331 affected
c33c997346c34ea7b89aec99524ad9632a2f1e0c< 1d4590fde856cb94bd9a46e795c29d8288c238fc affected
c33c997346c34ea7b89aec99524ad9632a2f1e0c< d028147ae06407cb355245db1774793600670169 affected
c33c997346c34ea7b89aec99524ad9632a2f1e0c< 926ede0c85e1e57c97d64d9612455267d597bb2c affected
4.18 affected
… +8 more rows
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I. Basic Information for CVE-2026-23258

Vulnerability Information
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Vulnerability Title
net: liquidio: Initialize netdev pointer before queue setup
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: liquidio: Initialize netdev pointer before queue setup In setup_nic_devices(), the netdev is allocated using alloc_etherdev_mq(). However, the pointer to this structure is stored in oct->props[i].netdev only after the calls to netif_set_real_num_rx_queues() and netif_set_real_num_tx_queues(). If either of these functions fails, setup_nic_devices() returns an error without freeing the allocated netdev. Since oct->props[i].netdev is still NULL at this point, the cleanup function liquidio_destroy_nic_device() will fail to find and free the netdev, resulting in a memory leak. Fix this by initializing oct->props[i].netdev before calling the queue setup functions. This ensures that the netdev is properly accessible for cleanup in case of errors. Compile tested only. Issue found using a prototype static analysis tool and code review.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于netdev指针初始化顺序不当，可能导致内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux c33c997346c34ea7b89aec99524ad9632a2f1e0c ~ be109646cdaecab262f6276303b1763468c94378 -
Linux Linux 4.18 -

II. Public POCs for CVE-2026-23258

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III. Intelligence Information for CVE-2026-23258

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Patches & Fixes for CVE-2026-23258 (7)

Same Patch Batch · Linux · 2026-03-18 · 35 CVEs total

CVE-2026-23246 8.8 HIGH wifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration
CVE-2026-23270 7.8 HIGH net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks
CVE-2026-23268 7.8 HIGH apparmor: fix unprivileged local user can do privileged policy management
CVE-2026-23243 7.8 HIGH RDMA/umad: Reject negative data_len in ib_umad_write
CVE-2026-23245 7.8 HIGH net/sched: act_gate: snapshot parameters with RCU on replace
CVE-2026-23248 7.8 HIGH perf/core: Fix refcount bug and potential UAF in perf_mmap
CVE-2026-23253 7.8 HIGH media: dvb-core: fix wrong reinitialization of ringbuffer on reopen
CVE-2026-23242 7.5 HIGH RDMA/siw: Fix potential NULL pointer dereference in header processing
CVE-2025-71268 7.5 HIGH btrfs: fix reservation leak in some error paths when inserting inline extent
CVE-2025-71269 7.5 HIGH btrfs: do not free data reservation in fallback from inline due to -ENOSPC
CVE-2026-23269 7.1 HIGH apparmor: validate DFA start states are in bounds in unpack_pdb
CVE-2026-23250 xfs: check return value of xchk_scrub_create_subord
CVE-2025-71265 fs: ntfs3: fix infinite loop in attr_load_runs_range on inconsistent metadata
CVE-2025-71266 fs: ntfs3: check return value of indx_find to avoid infinite loop
CVE-2025-71267 fs: ntfs3: fix infinite loop triggered by zero-sized ATTR_LIST
CVE-2026-23267 f2fs: fix IS_CHECKPOINTED flag inconsistency issue caused by concurrent atomic commit and
CVE-2026-23266 fbdev: rivafb: fix divide error in nv3_arb()
CVE-2026-23265 f2fs: fix to do sanity check on node footer in {read,write}_end_io
CVE-2026-23244 nvme: fix memory allocation in nvme_pr_read_keys()
CVE-2026-23264 Revert "drm/amd: Check if ASPM is enabled from PCIe subsystem"

Showing top 20 of 35 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-23258

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