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CVE-2026-80860— fuse: fix race between interrupt and resend

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.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 6.12.96至6.13之前版本、6.18.39至6.19之前版本和7.1.4至7.2.3之前版本存在安全漏洞，该漏洞源于中断与重发操作之间存在竞争条件，可能导致fuse请求释放时触发异常。

AI Predicted 4.8 Difficulty: Hard EPSS 0.14% · P4

Possible ATT&CK Techniques 1 AI

T1614 · System Location Discovery

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux f8fce75fedf73ac72aa09163deb8f4291fdcaad2< 26fbe4bc3ef3ab0200407681cbef182af5d151de affected
f8fce75fedf73ac72aa09163deb8f4291fdcaad2< ed9c881f3b498383f73c42712b359419da42a7b0 affected
1d8ecd0cd696a5df0b2f72046a4ccee5d2a8ec2c affected
7366e6f4d2b4c7002b13fb01219e83679dad4127 affected
893479015cb6442fd389d3b553ab3036c9541715 affected
6.12.96< 6.13 affected
6.18.39< 6.19 affected
7.1.4< 7.2 affected
… +4 more rows
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I. Basic Information for CVE-2026-80860

Vulnerability Information
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Vulnerability Title
fuse: fix race between interrupt and resend
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fuse: fix race between interrupt and resend After commit f8fce75fedf7 ("fuse: clear intr_entry in fuse_resend and fuse_remove_pending_req") the WARN_ON(!list_empty(&req->intr_entry)) in fuse_request_free() still triggers due to the following race: In request_wait_answer() if (test_bit(FR_SENT, &req->flags)) -> returns true In fuse_chan_resend() clear_bit(FR_SENT, &req->flags) In request_wait_answer() queue_interrupt(req) Fix by: - move clearing FR_SENT inside fpq->lock - move setting FR_PENDING inside fiq->lock - recheck FR_SENT after acquiring fiq->lock in fuse_dev_queue_interrupt()
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
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 6.12.96至6.13之前版本、6.18.39至6.19之前版本和7.1.4至7.2.3之前版本存在安全漏洞，该漏洞源于中断与重发操作之间存在竞争条件，可能导致fuse请求释放时触发异常。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux f8fce75fedf73ac72aa09163deb8f4291fdcaad2 ~ 26fbe4bc3ef3ab0200407681cbef182af5d151de -
Linux Linux 7.2 -

II. Public POCs for CVE-2026-80860

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III. Intelligence Information for CVE-2026-80860

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Patches & Fixes for CVE-2026-80860 (2)

Same Patch Batch · Linux · 2026-09-04 · 156 CVEs total

CVE-2026-80865 bpf: Add missing access_ok call to copy_user_syms
CVE-2026-80855 fuse: fix invalidate lock leak on open O_TRUNC DAX failure
CVE-2026-80856 fuse: fix invalidate lock leak on setattr writeback failure
CVE-2026-80857 fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free
CVE-2026-80858 fuse: publish io-uring queues with release semantics
CVE-2026-80859 fuse: fix missing barrier when checking io-uring readiness
CVE-2026-80861 usb: xhci: bail out of setup if the controller is inaccessible
CVE-2026-80862 nvme-tcp: fix usage of page_frag_cache
CVE-2026-80863 RDMA/rxe: Fix OOB in free_rd_atomic_resources()
CVE-2026-80864 RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp
CVE-2026-80870 drm/amdkfd: Validate CRIU-restored IDs before idr_alloc
CVE-2026-80874 arm64: dts: renesas: ironhide: Describe inline ECC carveouts
CVE-2026-80873 KVM: arm64: nv: Write ESR_EL2 for injected nested SError exceptions
CVE-2026-80872 ALSA: hda/tas2781: Cancel async firmware request at unbind
CVE-2026-80871 crypto: xilinx-trng - Remove crypto_rng interface
CVE-2026-80868 ntfs3: Allocate iomap inline_data using alloc_page
CVE-2026-80866 tipc: avoid busy looping in tipc_exit_net()
CVE-2026-80867 alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
CVE-2026-80854 usb: gadget: f_tcm: keep port count until LUN teardown completes
CVE-2026-80869 ntfs: bound the attribute-list entry in ntfs_read_inode_mount()

Showing top 20 of 156 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-80860

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