Vulnerability-Lookup

CNVD-2024-31491

Vulnerability from cnvd - Published: 2024-07-11

Title

Linux kernel缓冲区溢出漏洞（CNVD-2024-31491）

Description

Linux内核是一款开源操作系统内核，作为计算机系统的核心，负责管理系统的硬件资源和提供其他软件运行的平台。Linux内核具有稳定性高、安全性好、性能优越等特点，适用于服务器、嵌入式设备等多种场景。 Linux kernel存在缓冲区溢出漏洞，攻击者可利用该漏洞构造恶意输入触发缓冲区溢出，导致拒绝服务、执行任意代码等危害。

Severity

中

Patch Name

Linux kernel缓冲区溢出漏洞（CNVD-2024-31491）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://git.kernel.org/stable/c/acce6479e30f73ab0872e93a75aed1fb791d04ec

Reference

https://git.kernel.org/stable/c/19bd9537b6bc1c882df25206c15917214d8e9460 https://git.kernel.org/stable/c/f1b6a016dfa45cedc080d36fa5d6f22237d80e8b https://git.kernel.org/stable/c/acce6479e30f73ab0872e93a75aed1fb791d04ec

Impacted products

Name
['Linux Linux kernel <6.5', 'Linux Linux kernel >=6.6，<6.6.33', 'Linux Linux kernel >=6.9，<6.9.4', 'Linux Linux kernel 6.10.0:rc1']

Show details on source website

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    "cve": {
      "cveNumber": "CVE-2024-39291",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2024-39291"
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  "number": "CNVD-2024-31491",
  "openTime": "2024-07-11",
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  "serverity": "\u4e2d",
  "submitTime": "2024-06-27",
  "title": "Linux kernel\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2024-31491\uff09"
}

CVE-2024-39291 (GCVE-0-2024-39291)

Vulnerability from cvelistv5 – Published: 2024-06-24 13:52 – Updated: 2026-05-11 20:20

Title

drm/amdgpu: Fix buffer size in gfx_v9_4_3_init_ cp_compute_microcode() and rlc_microcode()

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix buffer size in gfx_v9_4_3_init_ cp_compute_microcode() and rlc_microcode() The function gfx_v9_4_3_init_microcode in gfx_v9_4_3.c was generating about potential truncation of output when using the snprintf function. The issue was due to the size of the buffer 'ucode_prefix' being too small to accommodate the maximum possible length of the string being written into it. The string being written is "amdgpu/%s_mec.bin" or "amdgpu/%s_rlc.bin", where %s is replaced by the value of 'chip_name'. The length of this string without the %s is 16 characters. The warning message indicated that 'chip_name' could be up to 29 characters long, resulting in a total of 45 characters, which exceeds the buffer size of 30 characters. To resolve this issue, the size of the 'ucode_prefix' buffer has been reduced from 30 to 15. This ensures that the maximum possible length of the string being written into the buffer will not exceed its size, thus preventing potential buffer overflow and truncation issues. Fixes the below with gcc W=1: drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c: In function ‘gfx_v9_4_3_early_init’: drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c:379:52: warning: ‘%s’ directive output may be truncated writing up to 29 bytes into a region of size 23 [-Wformat-truncation=] 379 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_rlc.bin", chip_name); | ^~ ...... 439 | r = gfx_v9_4_3_init_rlc_microcode(adev, ucode_prefix); | ~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c:379:9: note: ‘snprintf’ output between 16 and 45 bytes into a destination of size 30 379 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_rlc.bin", chip_name); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c:413:52: warning: ‘%s’ directive output may be truncated writing up to 29 bytes into a region of size 23 [-Wformat-truncation=] 413 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_mec.bin", chip_name); | ^~ ...... 443 | r = gfx_v9_4_3_init_cp_compute_microcode(adev, ucode_prefix); | ~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c:413:9: note: ‘snprintf’ output between 16 and 45 bytes into a destination of size 30 413 | snprintf(fw_name, sizeof(fw_name), "amdgpu/%s_mec.bin", chip_name); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 17:08 UTC

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/19bd9537b6bc1c882…
https://git.kernel.org/stable/c/f1b6a016dfa45cedc…
https://git.kernel.org/stable/c/acce6479e30f73ab0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 86301129698be52f8398f92ea8564168f6bfcae1 , < 19bd9537b6bc1c882df25206c15917214d8e9460 (git) Affected: 86301129698be52f8398f92ea8564168f6bfcae1 , < f1b6a016dfa45cedc080d36fa5d6f22237d80e8b (git) Affected: 86301129698be52f8398f92ea8564168f6bfcae1 , < acce6479e30f73ab0872e93a75aed1fb791d04ec (git)
Linux	Linux	Affected: 6.5 Unaffected: 0 , < 6.5 (semver) Unaffected: 6.6.33 , ≤ 6.6.* (semver) Unaffected: 6.9.4 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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CNVD-2024-31491

CVE-2024-39291 (GCVE-0-2024-39291)

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