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CVE-2026-23256— net: liquidio: Fix off-by-one error in VF setup_nic_devices() cleanup

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liquidio驱动VF的setup_nic_devices函数清理循环存在差一错误，可能导致内存泄漏。

AI Predicted 5.3 Difficulty: Trivial EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux 846b46873eeb3baf40f7e6d8fe8f98aec95e7727< bd680e56e316be92c01568be98d85d7a6c9bd92c affected
846b46873eeb3baf40f7e6d8fe8f98aec95e7727< 01fbca1e93ec3f39f76c31a8f9afa32ce00da48a affected
846b46873eeb3baf40f7e6d8fe8f98aec95e7727< 71a56b89203ec7e5670d94a61a9b4ae617eca804 affected
846b46873eeb3baf40f7e6d8fe8f98aec95e7727< 3bf519e39b51cb08a93c0599870b35a23db1031e affected
846b46873eeb3baf40f7e6d8fe8f98aec95e7727< 52b19b3a22306fe452ec9e8ff96063f4bfb77b99 affected
846b46873eeb3baf40f7e6d8fe8f98aec95e7727< 4640fa5ad5e1a0dbd1c2d22323b7d70a8107dcfd affected
846b46873eeb3baf40f7e6d8fe8f98aec95e7727< 6cbba46934aefdfb5d171e0a95aec06c24f7ca30 affected
4.10 affected
… +8 more rows
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I. Basic Information for CVE-2026-23256

Vulnerability Information
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Vulnerability Title
net: liquidio: Fix off-by-one error in VF setup_nic_devices() cleanup
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: liquidio: Fix off-by-one error in VF setup_nic_devices() cleanup In setup_nic_devices(), the initialization loop jumps to the label setup_nic_dev_free on failure. The current cleanup loop while(i--) skip the failing index i, causing a memory leak. Fix this by changing the loop to iterate from the current index i down to 0. Compile tested only. Issue found using 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liquidio驱动VF的setup_nic_devices函数清理循环存在差一错误，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 846b46873eeb3baf40f7e6d8fe8f98aec95e7727 ~ bd680e56e316be92c01568be98d85d7a6c9bd92c -
Linux Linux 4.10 -

II. Public POCs for CVE-2026-23256

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III. Intelligence Information for CVE-2026-23256

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Patches & Fixes for CVE-2026-23256 (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

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