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CVE-2026-99047— gve: fix XSK buffer leak when rings are stopped

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：修复在停止环形缓冲区（rings）时导致的 XSK 缓冲区泄漏问题 GVE 驱动在停止队列并重置环形缓冲区状态时，未能释放 XSK 缓冲区。这导致所有已提交给网卡（NIC）的 XSK 缓冲区发生泄漏。 修复方法：在停止环形缓冲区时，释放已分配给 buf_state 的 XSK 缓冲区。 该问题已在生产环境中被触发。

AI Predicted 5.5 Difficulty: Hard

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux c1fffc5d66a7147d557736c2341a511e0896d9ff< 506f9de069d07a72b9887ce3edd2fdf32f4953aa affected
c1fffc5d66a7147d557736c2341a511e0896d9ff< 7a7e6bbbf0586c1f62f0cc7d9a2877d8a5e5aaf7 affected
c1fffc5d66a7147d557736c2341a511e0896d9ff< 73670ddb91a4d22e1deb3efd962242de1ec48e90 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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I. Basic Information for CVE-2026-99047

Vulnerability Information
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Vulnerability Title
gve: fix XSK buffer leak when rings are stopped
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: gve: fix XSK buffer leak when rings are stopped GVE does not free XSK buffers when resetting ring state as a part of stopping queues. This causes all XSK buffers which are posted to the NIC to be leaked. Free XSK buffers attached to an allocated buf_state when stopping rings. This issue was hit 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 c1fffc5d66a7147d557736c2341a511e0896d9ff ~ 506f9de069d07a72b9887ce3edd2fdf32f4953aa -
Linux Linux 6.17 -

II. Public POCs for CVE-2026-99047

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III. Intelligence Information for CVE-2026-99047

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Patches & Fixes for CVE-2026-99047 (3)

Same Patch Batch · Linux · 2026-10-23 · 218 CVEs total

CVE-2026-98937 perf/core: Check kernel access when kernel callchains are requested
CVE-2026-98950 flow_dissector: avoid u16 truncation of hlen in bpf_flow_dissect()
CVE-2026-98949 drm/imagination: Fix reference and vm_bo handling in remap()
CVE-2026-98948 mlxsw: spectrum_flower: Fix port range register leak in tmplt_create()
CVE-2026-98947 vsock: Fix memory leak in vmci_transport_recv_dgram_cb()
CVE-2026-98946 drm/vc4: Disable the V3D interrupt across runtime suspend
CVE-2026-98945 HID: steam: Rearrange teardown sequence
CVE-2026-98944 HID: steam: Refactor registration
CVE-2026-98943 HID: steam: Clean up locking
CVE-2026-98942 sched_ext: Build the cid tables privately and publish them with RCU
CVE-2026-98941 ext4: don't enable large folios on encrypted inodes
CVE-2026-98940 ASoC: qcom: lpass-cpu: use DAI table index for playback constraints
CVE-2026-98939 x86/mm: Drop unnecessary PMD page copy when freeing
CVE-2026-98938 rust: irq: pass RegistrationInner as cookie to request_irq
CVE-2026-98926 drm/amd/display: Remove sink usage from DPMS
CVE-2026-98929 macsec: initialize SecY before registering the netdevice
CVE-2026-98928 KVM: arm64: Derive GUEST_HAS_SVE from the SVE feature bit at EL2
CVE-2026-98927 KVM: arm64: nv: Fix life cycle of the nested_mmus array
CVE-2026-98930 KVM: s390: Fix IRQ injection with SIGP Stop and Store Status
CVE-2026-98925 bpf, sockmap: Fix self-redirect copied_seq double-counting

Showing top 20 of 218 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-99047

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