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CVE-2026-99044— ice: fix use-after-free in dynamic port 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.

在 Linux 内核中，以下漏洞已得到修复： ice：修复动态端口清理中的释放后使用（use-after-free）问题 ice_dealloc_dynamic_port() 函数使用 dyn_port->vsi->idx 从 pf->dyn_ports 中移除动态端口。然而，该函数在读取用于移除操作的索引之前，就先释放了 VSI，从而导致了释放后使用漏洞。修复方法是遵循 ice_alloc_dynamic_port() 中分配顺序的逆序：在释放 VSI 之前，先移除 xarray 中的对应条目。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.17% · P6 Updated Oct 23, 2026

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 10

Vendor	Product	Version Range	Status
Linux	Linux	`eda69d654c7edae21312f731e0308941cb2ee2a9< 7c1344df1ae0579f57b97647e5203b06496ce10c`	affected
		`eda69d654c7edae21312f731e0308941cb2ee2a9< ca8a6285b11d01e5a279b1aa7fb55b1a02ecebb1`	affected
		`eda69d654c7edae21312f731e0308941cb2ee2a9< b98eb58ba2f8fe8e9bba1b8a3b94fa5602c6de84`	affected
		`eda69d654c7edae21312f731e0308941cb2ee2a9< 1402fc67d2f4e2e1fc7bf8ee0825b8ad994557ff`	affected
		`6.12`	affected
		`< 6.12`	unaffected
		`6.12.114≤ 6.12.*`	unaffected
		`6.18.57≤ 6.18.*`	unaffected
… +2 more rows

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Vulnerability Information

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Vulnerability Title

ice: fix use-after-free in dynamic port cleanup

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: ice: fix use-after-free in dynamic port cleanup ice_dealloc_dynamic_port() uses dyn_port->vsi->idx to erase the dynamic port from pf->dyn_ports. However, it frees the VSI before reading the index for the erase, resulting in a use-after-free. Follow the reverse of the allocation order in ice_alloc_dynamic_port() by erasing the xarray entry before freeing the VSI.

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

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Linux	Linux	eda69d654c7edae21312f731e0308941cb2ee2a9 ~ 7c1344df1ae0579f57b97647e5203b06496ce10c	-
Linux	Linux	6.12	-

II. Public POCs for CVE-2026-99044

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-99044

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Patches & Fixes for CVE-2026-99044 (4)

https://www.cve.org/CVERecord?id=CVE-2026-99044

Same Patch Batch · Linux · 2026-10-23 · 217 CVEs total

CVE-2026-98959	9.8 CRITICAL	btrfs: fix xattr replace when multiple xattrs are packed in the same item
CVE-2026-99078	9.8 CRITICAL	net/mlx5e: Prevent stale XSK buffer release on MPWQE refill retry
CVE-2026-99079	9.8 CRITICAL	net/mlx5e: Prevent stale XSK buffer release on refill retry
CVE-2026-98988	8.8 HIGH	namespace: keep covered mounts covered in OPEN_TREE_NAMESPACE
CVE-2026-99083	8.8 HIGH	ksmbd: fix heap out-of-bounds write in krb5_authenticate()
CVE-2026-99082	8.8 HIGH	KVM: x86: Use active memslots for the per-vCPU MMIO cache
CVE-2026-98981	8.8 HIGH	namespace: unhash a dentry before detaching the mounts on it
CVE-2026-98980	8.8 HIGH	namei: don't reveal overmounted entries in refwalk
CVE-2026-98870	8.8 HIGH	ksmbd: remove stale channels from all sessions on teardown
CVE-2026-98978	8.4 HIGH	namespace: never expire a locked mount
CVE-2026-99042	8.4 HIGH	io_uring/net: populate CONNECT filter fields for 24-byte sockaddr_in6
CVE-2026-98968	8.1 HIGH	amt: send the relay's General Query directly from the receive path
CVE-2026-99064	8.1 HIGH	cipso: adjust cached option offsets when removing CIPSO
CVE-2026-99014	7.8 HIGH	Bluetooth: hci_sync: Fix command skb lifetime during scan setup
CVE-2026-98999	7.8 HIGH	drm/xe: Fix stale pinned_link entry when fb-pin performs the final unpin
CVE-2026-99016	7.8 HIGH	riscv: futex: untag the user pointer before the atomic access
CVE-2026-99018	7.8 HIGH	riscv: entry: gate shadow call stack reload on sstatus.SPP, not tp
CVE-2026-99051	7.8 HIGH	fsverity: RCU-delay the freeing of struct fsverity_info
CVE-2026-99054	7.8 HIGH	tipc: destroy topsrv workqueues before closing connections
CVE-2026-99053	7.8 HIGH	tipc: hold a reference to nodes found by link name

Showing top 20 of 217 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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