Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%

Buy Us a Coffee

CVE-2026-99045— ibmveth: h_free logical LAN on open-fail after register

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： ibmveth：在注册后若打开逻辑 LAN 失败，未调用 h_free 释放逻辑 LAN。 ibmveth_open() 函数首先注册逻辑 LAN，随后分配接收（RX）缓冲区池。若缓冲区池分配失败，代码会跳转到 out_free_buffer_pools 标签处，但此时并未调用 h_free_logical_lan()。因此，当缓冲区列表页被取消映射时，PHYP（Power Hypervisor）仍认为其拥有该页。而 request_irq() 失败时，在跳转到同一标签

AI Predicted 5.5 Difficulty: Moderate EPSS 0.18% · P7 Updated Oct 23, 2026

Possible ATT&CK Techniques 1 AI

T1069 · Permission Groups Discovery

Affected Version Matrix 12

Vendor	Product	Version Range	Status
Linux	Linux	`d43732ce021f4244a4c53a45d57ad0c13c30ed94< decb4d4ead2c71ef698727734ab5024a872eb372`	affected
		`d43732ce021f4244a4c53a45d57ad0c13c30ed94< c54bbdf6f0731102a4bf7f5e4ee535b3ea415996`	affected
		`d43732ce021f4244a4c53a45d57ad0c13c30ed94< a065bd31ec462f6f9c267026b708dd020f122723`	affected
		`d43732ce021f4244a4c53a45d57ad0c13c30ed94< d24fdec1413c656d29298097926e77542785ca0c`	affected
		`d43732ce021f4244a4c53a45d57ad0c13c30ed94< af0524bf4ce1a4cbd2946aa81751582951cfcab5`	affected
		`4.13`	affected
		`< 4.13`	unaffected
		`6.6.160≤ 6.6.*`	unaffected
… +4 more rows

Get alerts for future matching vulnerabilities Log in to subscribe

Vulnerability Information

Have questions about the vulnerability? See if Shenlong's analysis helps!

View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title

ibmveth: h_free logical LAN on open-fail after register

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: ibmveth: h_free logical LAN on open-fail after register ibmveth_open() registers the logical LAN, then allocates the RX buffer pools. A pool failure jumps to out_free_buffer_pools without h_free_logical_lan(), so PHYP still owns the buffer-list page when it is unmapped. request_irq() failure already issued the hypercall before taking the same label. Move that h_free to the shared post-register unwind so both paths deregister before the buffer list is unmapped.

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	d43732ce021f4244a4c53a45d57ad0c13c30ed94 ~ decb4d4ead2c71ef698727734ab5024a872eb372	-
Linux	Linux	4.13	-

II. Public POCs for CVE-2026-99045

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-99045

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-99045 (5)

https://www.cve.org/CVERecord?id=CVE-2026-99045

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

Same product: Linux

Same vendor: Linux