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CVE-2025-21843— drm/panthor: avoid garbage value in panthor_ioctl_dev_query()

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panthor_ioctl_dev_query函数中未初始化的priorities_info变量可能导致垃圾值问题。

AI Predicted 6.5 Difficulty: Easy EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1039 · Data from Network Shared Drive

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux f70000ef23527f6d928d1175c66c5fafa968814b< 64b95bbc08bacf3e4b05c8604e6a4fec43bb712a affected
f70000ef23527f6d928d1175c66c5fafa968814b< 3b32b7f638fe61e9d29290960172f4e360e38233 affected
6.13 affected
< 6.13 unaffected
6.13.4≤ 6.13.* unaffected
6.14≤ * unaffected
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I. Basic Information for CVE-2025-21843

Vulnerability Information
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Vulnerability Title
drm/panthor: avoid garbage value in panthor_ioctl_dev_query()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: avoid garbage value in panthor_ioctl_dev_query() 'priorities_info' is uninitialized, and the uninitialized value is copied to user object when calling PANTHOR_UOBJ_SET(). Using memset to initialize 'priorities_info' to avoid this garbage value problem.
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panthor_ioctl_dev_query函数中未初始化的priorities_info变量可能导致垃圾值问题。
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 f70000ef23527f6d928d1175c66c5fafa968814b ~ 64b95bbc08bacf3e4b05c8604e6a4fec43bb712a -
Linux Linux 6.13 -

II. Public POCs for CVE-2025-21843

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III. Intelligence Information for CVE-2025-21843

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Patches & Fixes for CVE-2025-21843 (2)

Same Patch Batch · Linux · 2025-03-07 · 8 CVEs total

CVE-2025-21836 7.8 HIGH io_uring/kbuf: reallocate buf lists on upgrade
CVE-2025-21842 7.8 HIGH amdkfd: properly free gang_ctx_bo when failed to init user queue
CVE-2025-21839 7.3 HIGH KVM: x86: Load DR6 with guest value only before entering .vcpu_run() loop
CVE-2025-21835 usb: gadget: f_midi: fix MIDI Streaming descriptor lengths
CVE-2025-21838 usb: gadget: core: flush gadget workqueue after device removal
CVE-2025-21840 thermal/netlink: Prevent userspace segmentation fault by adjusting UAPI header
CVE-2025-21841 cpufreq/amd-pstate: Fix cpufreq_policy ref counting

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-21843

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