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CVE-2026-46333— 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ptrace的get_dumpable逻辑处理不当，可能导致权限检查问题。

CVSS 7.1 · High EPSS 0.51% · P41

公开利用映射 1

Metasploit · 1 cve_2026_46333_chage.rb [post]

影响版本矩阵 26

厂商产品 版本范围状态
Linux Linux bfedb589252c01fa505ac9f6f2a3d5d68d707ef4< 93d4ba49d18e3d7fb41a9927c2d0cca5e9dfefd6 affected
bfedb589252c01fa505ac9f6f2a3d5d68d707ef4< 15b828a46f305ae9f05a7c16914b3ce273474205 affected
bfedb589252c01fa505ac9f6f2a3d5d68d707ef4< 4709234fd1b95136ceb789f639b1e7ea5de1b181 affected
bfedb589252c01fa505ac9f6f2a3d5d68d707ef4< 8f907d345bae8f4b3f004c5abc56bf2dfb851ea7 affected
bfedb589252c01fa505ac9f6f2a3d5d68d707ef4< 6e5b51e74a40d377bcd3081dd33fbaa0e1aa7e3d affected
bfedb589252c01fa505ac9f6f2a3d5d68d707ef4< 2a93a4fac7b6051d3be7cd1b015fe7320cd0404d affected
bfedb589252c01fa505ac9f6f2a3d5d68d707ef4< 01363cb3fbd0238ffdeb09f53e9039c9edf8a730 affected
bfedb589252c01fa505ac9f6f2a3d5d68d707ef4< 31e62c2ebbfdc3fe3dbdf5e02c92a9dc67087a3a affected
… +18 条更多
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一、 漏洞 CVE-2026-46333 基础信息

漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
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Vulnerability Title
ptrace: slightly saner 'get_dumpable()' logic
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ptrace: slightly saner 'get_dumpable()' logic The 'dumpability' of a task is fundamentally about the memory image of the task - the concept comes from whether it can core dump or not - and makes no sense when you don't have an associated mm. And almost all users do in fact use it only for the case where the task has a mm pointer. But we have one odd special case: ptrace_may_access() uses 'dumpable' to check various other things entirely independently of the MM (typically explicitly using flags like PTRACE_MODE_READ_FSCREDS). Including for threads that no longer have a VM (and maybe never did, like most kernel threads). It's not what this flag was designed for, but it is what it is. The ptrace code does check that the uid/gid matches, so you do have to be uid-0 to see kernel thread details, but this means that the traditional "drop capabilities" model doesn't make any difference for this all. Make it all make a *bit* more sense by saying that if you don't have a MM pointer, we'll use a cached "last dumpability" flag if the thread ever had a MM (it will be zero for kernel threads since it is never set), and require a proper CAP_SYS_PTRACE capability to override.
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:N
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ptrace的get_dumpable逻辑处理不当，可能导致权限检查问题。
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

厂商 产品 影响版本 CPE 订阅
Linux Linux bfedb589252c01fa505ac9f6f2a3d5d68d707ef4 ~ 93d4ba49d18e3d7fb41a9927c2d0cca5e9dfefd6 -
Linux Linux 4.10 -

二、漏洞 CVE-2026-46333 的公开POC

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三、漏洞 CVE-2026-46333 的情报信息

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CVE-2026-46333 补丁与修复 (8)

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46333

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