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CVE-2025-37885— KVM: x86: Reset IRTE to host control if *new* route isn't postable

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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未正确重置IRTE，可能导致中断错误传递。

CVSS 8.8 · High EPSS 0.30% · P21

Possible ATT&CK Techniques 1 AI

T1055.009 · Proc Memory

Affected Version Matrix 16

VendorProduct Version RangeStatus
Linux Linux efc644048ecde54f016011fe10110addd0de348f< e5f2dee9f7fcd2ff4b97869f3c66a0d89c167769 affected
efc644048ecde54f016011fe10110addd0de348f< 116c7d35b8f72eac383b9fd371d7c1a8ffc2968b affected
efc644048ecde54f016011fe10110addd0de348f< 023816bd5fa46fab94d1e7917fe131b79ed1fb41 affected
efc644048ecde54f016011fe10110addd0de348f< 3481fd96d801715942b6f69fe251133128156f30 affected
efc644048ecde54f016011fe10110addd0de348f< b5de7ac74f69603ad803c524b840bffd36368fc3 affected
efc644048ecde54f016011fe10110addd0de348f< 3066ec21d1a33896125747f68638725f456308db affected
efc644048ecde54f016011fe10110addd0de348f< 9bcac97dc42d2f4da8229d18feb0fe2b1ce523a2 affected
4.4 affected
… +8 more rows
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I. Basic Information for CVE-2025-37885

Vulnerability Information
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Vulnerability Title
KVM: x86: Reset IRTE to host control if *new* route isn't postable
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: KVM: x86: Reset IRTE to host control if *new* route isn't postable Restore an IRTE back to host control (remapped or posted MSI mode) if the *new* GSI route prevents posting the IRQ directly to a vCPU, regardless of the GSI routing type. Updating the IRTE if and only if the new GSI is an MSI results in KVM leaving an IRTE posting to a vCPU. The dangling IRTE can result in interrupts being incorrectly delivered to the guest, and in the worst case scenario can result in use-after-free, e.g. if the VM is torn down, but the underlying host IRQ isn't freed.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未正确重置IRTE，可能导致中断错误传递。
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 efc644048ecde54f016011fe10110addd0de348f ~ e5f2dee9f7fcd2ff4b97869f3c66a0d89c167769 -
Linux Linux 4.4 -

II. Public POCs for CVE-2025-37885

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III. Intelligence Information for CVE-2025-37885

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Same Patch Batch · Linux · 2025-05-09 · 52 CVEs total

CVE-2025-37879 9.8 CRITICAL 9p/net: fix improper handling of bogus negative read/write replies
CVE-2025-37849 8.8 HIGH KVM: arm64: Tear down vGIC on failed vCPU creation
CVE-2025-37886 7.8 HIGH pds_core: make wait_context part of q_info
CVE-2025-37869 7.8 HIGH drm/xe: Use local fence in error path of xe_migrate_clear
CVE-2025-37854 7.8 HIGH drm/amdkfd: Fix mode1 reset crash issue
CVE-2025-37882 7.8 HIGH usb: xhci: Fix isochronous Ring Underrun/Overrun event handling
CVE-2025-37845 7.8 HIGH tracing: fprobe events: Fix possible UAF on modules
CVE-2025-37861 7.8 HIGH scsi: mpi3mr: Synchronous access b/w reset and tm thread for reply queue
CVE-2025-37856 7.8 HIGH btrfs: harden block_group::bg_list against list_del() races
CVE-2025-37873 7.8 HIGH eth: bnxt: fix missing ring index trim on error path
CVE-2025-37871 7.5 HIGH nfsd: decrease sc_count directly if fail to queue dl_recall
CVE-2025-37887 7.1 HIGH pds_core: handle unsupported PDS_CORE_CMD_FW_CONTROL result
CVE-2025-37876 7.0 HIGH netfs: Only create /proc/fs/netfs with CONFIG_PROC_FS
CVE-2025-37883 s390/sclp: Add check for get_zeroed_page()
CVE-2025-37877 iommu: Clear iommu-dma ops on cleanup
CVE-2025-37888 net/mlx5: Fix null-ptr-deref in mlx5_create_{inner_,}ttc_table()
CVE-2025-37872 net: txgbe: fix memory leak in txgbe_probe() error path
CVE-2025-37870 drm/amd/display: prevent hang on link training fail
CVE-2025-37868 drm/xe/userptr: fix notifier vs folio deadlock
CVE-2025-37867 RDMA/core: Silence oversized kvmalloc() warning

Showing top 20 of 52 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-37885

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