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CVE-2025-37849— KVM: arm64: Tear down vGIC on failed vCPU creation

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vCPU创建失败时未清理vGIC资源，可能导致内存泄漏或释放后重用。

CVSS 8.8 · High EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1564.004 · NTFS File Attributes

Affected Version Matrix 14

VendorProduct Version RangeStatus
Linux Linux 6211753fdfd05af9e08f54c8d0ba3ee516034878< 07476e0d932afc53c05468076393ac35d0b4999e affected
6211753fdfd05af9e08f54c8d0ba3ee516034878< 5085e02362b9948f82fceca979b8f8e12acb1cc5 affected
6211753fdfd05af9e08f54c8d0ba3ee516034878< c322789613407647a05ff5c451a7bf545fb34e73 affected
6211753fdfd05af9e08f54c8d0ba3ee516034878< 2480326eba8ae9ccc5e4c3c2dc8d407db68e3c52 affected
6211753fdfd05af9e08f54c8d0ba3ee516034878< f1e9087abaeedec9bf2894a282ee4f0d8383f299 affected
6211753fdfd05af9e08f54c8d0ba3ee516034878< 250f25367b58d8c65a1b060a2dda037eea09a672 affected
3.11 affected
< 3.11 unaffected
… +6 more rows
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I. Basic Information for CVE-2025-37849

Vulnerability Information
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Vulnerability Title
KVM: arm64: Tear down vGIC on failed vCPU creation
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Tear down vGIC on failed vCPU creation If kvm_arch_vcpu_create() fails to share the vCPU page with the hypervisor, we propagate the error back to the ioctl but leave the vGIC vCPU data initialised. Note only does this leak the corresponding memory when the vCPU is destroyed but it can also lead to use-after-free if the redistributor device handling tries to walk into the vCPU. Add the missing cleanup to kvm_arch_vcpu_create(), ensuring that the vGIC vCPU structures are destroyed on error.
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vCPU创建失败时未清理vGIC资源，可能导致内存泄漏或释放后重用。
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 6211753fdfd05af9e08f54c8d0ba3ee516034878 ~ 07476e0d932afc53c05468076393ac35d0b4999e -
Linux Linux 3.11 -

II. Public POCs for CVE-2025-37849

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III. Intelligence Information for CVE-2025-37849

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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-2025-37885 8.8 HIGH KVM: x86: Reset IRTE to host control if *new* route isn't postable
CVE-2025-37856 7.8 HIGH btrfs: harden block_group::bg_list against list_del() races
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-2025-37845 7.8 HIGH tracing: fprobe events: Fix possible UAF on modules
CVE-2025-37882 7.8 HIGH usb: xhci: Fix isochronous Ring Underrun/Overrun event handling
CVE-2025-37861 7.8 HIGH scsi: mpi3mr: Synchronous access b/w reset and tm thread for reply queue
CVE-2025-37854 7.8 HIGH drm/amdkfd: Fix mode1 reset crash issue
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-2025-37888 net/mlx5: Fix null-ptr-deref in mlx5_create_{inner_,}ttc_table()
CVE-2025-37877 iommu: Clear iommu-dma ops on cleanup
CVE-2025-37874 net: ngbe: fix memory leak in ngbe_probe() error path
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-2025-37849

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