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CVE-2025-40023— drm/xe/vf: Don't expose sysfs attributes not applicable for VFs

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，该漏洞源于未限制VF访问sysfs属性，可能导致错误访问寄存器。

AI Predicted 3.3 Difficulty: Theoretical EPSS 0.18% · P8

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 0e414bf7ad012e55c8a0aa4e91f68cb1cf5801ff< bacbadedbba737da8ae6e0464bc0971c30cda4cb affected
0e414bf7ad012e55c8a0aa4e91f68cb1cf5801ff< 500dad428e5b0de4c1bdfa893822a6e06ddad0b5 affected
6.16 affected
< 6.16 unaffected
6.16.10≤ 6.16.* unaffected
6.17≤ * unaffected
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I. Basic Information for CVE-2025-40023

Vulnerability Information
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Vulnerability Title
drm/xe/vf: Don't expose sysfs attributes not applicable for VFs
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/xe/vf: Don't expose sysfs attributes not applicable for VFs VFs can't read BMG_PCIE_CAP(0x138340) register nor access PCODE (already guarded by the info.skip_pcode flag) so we shouldn't expose attributes that require any of them to avoid errors like: [] xe 0000:03:00.1: [drm] Tile0: GT0: VF is trying to read an \ inaccessible register 0x138340+0x0 [] RIP: 0010:xe_gt_sriov_vf_read32+0x6c2/0x9a0 [xe] [] Call Trace: [] xe_mmio_read32+0x110/0x280 [xe] [] auto_link_downgrade_capable_show+0x2e/0x70 [xe] [] dev_attr_show+0x1a/0x70 [] sysfs_kf_seq_show+0xaa/0x120 [] kernfs_seq_show+0x41/0x60 (cherry picked from commit a2d6223d224f333f705ed8495bf8bebfbc585c35)
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，该漏洞源于未限制VF访问sysfs属性，可能导致错误访问寄存器。
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 0e414bf7ad012e55c8a0aa4e91f68cb1cf5801ff ~ bacbadedbba737da8ae6e0464bc0971c30cda4cb -
Linux Linux 6.16 -

II. Public POCs for CVE-2025-40023

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III. Intelligence Information for CVE-2025-40023

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Same Patch Batch · Linux · 2025-10-24 · 8 CVEs total

CVE-2023-53733 7.8 HIGH net: sched: cls_u32: Undo tcf_bind_filter if u32_replace_hw_knode
CVE-2025-40018 7.8 HIGH ipvs: Defer ip_vs_ftp unregister during netns cleanup
CVE-2025-40024 7.8 HIGH vhost: Take a reference on the task in struct vhost_task.
CVE-2025-40019 crypto: essiv - Check ssize for decryption and in-place encryption
CVE-2025-40020 can: peak_usb: fix shift-out-of-bounds issue
CVE-2025-40021 tracing: dynevent: Add a missing lockdown check on dynevent
CVE-2025-40022 crypto: af_alg - Fix incorrect boolean values in af_alg_ctx

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-40023

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