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CVE-2026-99048— gve: fix napi_disable deadlock when attempting to disable XSK pools

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： gve：修复在尝试禁用 XSK 池时因调用 napi_disable 而引发的死锁问题。在禁用 XSK 池时，GVE 驱动调用了未加锁版本的和函数。然而，由于 GVE 支持队列管理操作，在调用之前，网络设备（netdev）锁已被获取。此时若调用未加锁版本的 / ，会导致死锁：执行线程试图重新获取它已经持有的锁。修复方案：将相关 NAPI 调用更新为使用加锁版本。该问题是在生产环境中发现的。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.17% · P6 Updated Oct 23, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 8

Vendor	Product	Version Range	Status
Linux	Linux	`606048cbd8346e616cfaee01b0143d072534136d< 42935a61001927aa01db10b53b420efd37eaa99b`	affected
		`606048cbd8346e616cfaee01b0143d072534136d< 3d377911ce81fd4e61af814e750d8e08879a5208`	affected
		`606048cbd8346e616cfaee01b0143d072534136d< 0cb6939a4dfefa822007b7a71986e06bc4f61f54`	affected
		`6.16`	affected
		`< 6.16`	unaffected
		`6.18.57≤ 6.18.*`	unaffected
		`7.2.11≤ 7.2.*`	unaffected
		`7.3≤ *`	unaffected

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Vulnerability Information

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Vulnerability Title

gve: fix napi_disable deadlock when attempting to disable XSK pools

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: gve: fix napi_disable deadlock when attempting to disable XSK pools When disabling XSK pools, GVE calls the unlocked versions of napi_disable and napi_enable. However, the netdev lock has already been acquired before ndo_bpf is called because GVE supports queue management ops. Calling the unlocked versions of napi_disable/enable results in a deadlock when attempting to disable XSK pools, as the thread attempts to re-acquire a lock it already holds. Update the NAPI calls to use the locked versions. This issue was found in production.

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	606048cbd8346e616cfaee01b0143d072534136d ~ 42935a61001927aa01db10b53b420efd37eaa99b	-
Linux	Linux	6.16	-

II. Public POCs for CVE-2026-99048

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-99048

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Patches & Fixes for CVE-2026-99048 (3)

https://www.cve.org/CVERecord?id=CVE-2026-99048

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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