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CVE-2026-98561— nfp: hold IPsec RX state under the XArray lock

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： nfp：在 XArray 锁保护下持有 IPsec 接收状态 在获取所查找到的 的引用之前，就释放了 XArray 锁。删除路径（delete path）可能在该时间间隔内擦除该条目并释放该状态的最后一个引用。随后，接收路径（RX）可能在状态已被排入销毁队列后，尝试对一个引用计数为零的状态增加引用。 该驱动会异步排队固件失效指令；而删除路径并未等待该命令完成，也未清空待处理的接收（RX）操作。 XFRM 垃圾回收器会在释放状态前等待一个 RCU 宽限期（grace pe

AI Predicted 7.8 Difficulty: Moderate

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 57f273adbcd44172cbe0bd10b8b7408dd255699f< c1b1639fb138db52fcfbd1747e92f2454076c6d5 affected
57f273adbcd44172cbe0bd10b8b7408dd255699f< dd765023bb54f9650f8b9137906fb2c4a554dd1d affected
57f273adbcd44172cbe0bd10b8b7408dd255699f< 8468d05aa08dc430b5675beadf6f6fb8943f170b affected
57f273adbcd44172cbe0bd10b8b7408dd255699f< fe6c8ea8bfd5d1253bb0de682b1fcc2c4bb92488 affected
57f273adbcd44172cbe0bd10b8b7408dd255699f< 1a983a4e14c635c40354be110cd9a1a5c94e01e6 affected
6.2 affected
< 6.2 unaffected
6.6.158≤ 6.6.* unaffected
… +4 more rows
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I. Basic Information for CVE-2026-98561

Vulnerability Information
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Vulnerability Title
nfp: hold IPsec RX state under the XArray lock
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nfp: hold IPsec RX state under the XArray lock nfp_net_ipsec_rx() drops the XArray lock before taking a reference to the xfrm_state it found. The delete path can erase the entry and drop the last state reference in that interval. RX can then try to increment a zero refcount after the state has been queued for destruction. The driver queues firmware invalidation asynchronously; the delete path does not wait for the command to complete or drain pending RX processing. The XFRM garbage collector waits for an RCU grace period before freeing the state. That delays reclamation but does not make acquiring a reference from zero valid. Take the xfrm_state reference before releasing the XArray lock so xa_erase() cannot run between lookup and reference acquisition.
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 57f273adbcd44172cbe0bd10b8b7408dd255699f ~ c1b1639fb138db52fcfbd1747e92f2454076c6d5 -
Linux Linux 6.2 -

II. Public POCs for CVE-2026-98561

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III. Intelligence Information for CVE-2026-98561

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Patches & Fixes for CVE-2026-98561 (4)

Same Patch Batch · Linux · 2026-10-18 · 435 CVEs total

CVE-2026-98720 KVM: nVMX: Force MSR bitmap refresh if runtime eVMCS controls are modified
CVE-2026-98733 Bluetooth: hci_core: Serialize fragmented ISO packet queueing
CVE-2026-98732 Bluetooth: btintel: fix buffer over-read in btintel_hw_error()
CVE-2026-98731 Bluetooth: btintel_pcie: fix plen overflow in btintel_pcie_recv_frame()
CVE-2026-98730 Bluetooth: btintel_pcie: reject oversized TX packets in send_frame()
CVE-2026-98729 x86/mm: Don't apply va_align to hugetlb mappings on AMD F15h
CVE-2026-98728 tpm: fix off-by-four bounds check in tpm2_get_random()
CVE-2026-98727 nvme-multipath: set BLK_FEAT_ZONED only after the zone info is known
CVE-2026-98726 nvme-multipath: fix underflow in ANA log bounds checks
CVE-2026-98725 nvmet-auth: fix out-of-bounds write in nvmet_auth_challenge()
CVE-2026-98724 nvmet: pci-epf: reject too-short SGL segments
CVE-2026-98723 nvmet: copy the hostid into the ctrl before creating PR pc_refs
CVE-2026-98722 mtd: block2mtd: Fix divide error when erase_size is zero
CVE-2026-98721 mtd: rawnand: cadence: Initialize IRQ state before requesting IRQ
CVE-2026-98709 wifi: mac80211: count only matching reservations in reserved switch
CVE-2026-98712 KVM: arm64: vgic: Take a refcount on IRQs referenced by last_lr_irq
CVE-2026-98711 wifi: cw1200: fix TX padding OOB read leaking heap data to device
CVE-2026-98710 wifi: iwlegacy: 3945: free EEPROM data on remove
CVE-2026-98713 KVM: arm64: Apply the fine-grained UNDEFs without FEAT_FGT
CVE-2026-98707 wifi: mac80211: shut down RX BA session timer on teardown

Showing top 20 of 435 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-98561

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