CVE-2023-52981— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
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drm/i915组件在错误捕获期间请求引用计数不当。
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一、 漏洞 CVE-2023-52981 基础信息
漏洞信息
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Vulnerability Title
drm/i915: Fix request ref counting during error capture & debugfs dump
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
drm/i915: Fix request ref counting during error capture & debugfs dump
When GuC support was added to error capture, the reference counting
around the request object was broken. Fix it up.
The context based search manages the spinlocking around the search
internally. So it needs to grab the reference count internally as
well. The execlist only request based search relies on external
locking, so it needs an external reference count but within the
spinlock not outside it.
The only other caller of the context based search is the code for
dumping engine state to debugfs. That code wasn't previously getting
an explicit reference at all as it does everything while holding the
execlist specific spinlock. So, that needs updaing as well as that
spinlock doesn't help when using GuC submission. Rather than trying to
conditionally get/put depending on submission model, just change it to
always do the get/put.
v2: Explicitly document adding an extra blank line in some dense code
(Andy Shevchenko). Fix multiple potential null pointer derefs in case
of no request found (some spotted by Tvrtko, but there was more!).
Also fix a leaked request in case of !started and another in
__guc_reset_context now that intel_context_find_active_request is
actually reference counting the returned request.
v3: Add a _get suffix to intel_context_find_active_request now that it
grabs a reference (Daniele).
v4: Split the intel_guc_find_hung_context change to a separate patch
and rename intel_context_find_active_request_get to
intel_context_get_active_request (Tvrtko).
v5: s/locking/reference counting/ in commit message (Tvrtko)
(cherry picked from commit 3700e353781e27f1bc7222f51f2cc36cbeb9b4ec)
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
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drm/i915组件在错误捕获期间请求引用计数不当。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2023-52981 的公开POC
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CVE-2023-52981 补丁与修复 (1)
同批安全公告 · Linux · 2025-03-27 · 共 124 条
| CVE-2023-53006 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2025-21876 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-21890 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52983 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-21889 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52930 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52931 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52934 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52935 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2025-21867 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2022-49760 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52973 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52974 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53009 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53033 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53028 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53026 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53023 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-53021 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52988 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 124 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2023-52981
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