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CVE-2026-99046— gve: fix XSK buffer leak on error descriptor

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：修复错误描述符导致的 XSK 缓冲区泄漏当接收（RX）完成描述符中的错误位被置位时，应释放 buf_state 及其关联的缓冲区。在 AF_XDP 零拷贝（ZC）场景中，XSK 缓冲区未被释放，从而引发内存泄漏。该问题由 LLM（大型语言模型）发现。

CVSS 7.5 · High EPSS 0.53% · P44 Updated Oct 24, 2026

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 8

Vendor	Product	Version Range	Status
Linux	Linux	`c1fffc5d66a7147d557736c2341a511e0896d9ff< 06656aaa7e43ae62b673c2244d27099b8b94a70d`	affected
		`c1fffc5d66a7147d557736c2341a511e0896d9ff< 889f763874855c575429f75946132a53c573aa14`	affected
		`c1fffc5d66a7147d557736c2341a511e0896d9ff< 9fed6a8ab8a5bacba2c709cb19d2dd6d2fa9112e`	affected
		`6.17`	affected
		`< 6.17`	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 XSK buffer leak on error descriptor

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: gve: fix XSK buffer leak on error descriptor When the error bit is set in the RX completion descriptor, the buf_state and its attached buffer should be freed. In the case of AF_XDP ZC, the XSK buffer was not freed, leading to a leak. This issue was caught by LLM.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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	c1fffc5d66a7147d557736c2341a511e0896d9ff ~ 06656aaa7e43ae62b673c2244d27099b8b94a70d	-
Linux	Linux	6.17	-

II. Public POCs for CVE-2026-99046

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-99046

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Patches & Fixes for CVE-2026-99046 (3)

https://www.cve.org/CVERecord?id=CVE-2026-99046

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 → →

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