CVE-2024-44964— 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idpf组件在执行软重置时存在内存泄漏和崩溃。
可能的 ATT&CK 技术 1 AI
T1499.002 · Service Exhaustion Flood
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一、 漏洞 CVE-2024-44964 基础信息
漏洞信息
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Vulnerability Title
idpf: fix memory leaks and crashes while performing a soft reset
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
idpf: fix memory leaks and crashes while performing a soft reset
The second tagged commit introduced a UAF, as it removed restoring
q_vector->vport pointers after reinitializating the structures.
This is due to that all queue allocation functions are performed here
with the new temporary vport structure and those functions rewrite
the backpointers to the vport. Then, this new struct is freed and
the pointers start leading to nowhere.
But generally speaking, the current logic is very fragile. It claims
to be more reliable when the system is low on memory, but in fact, it
consumes two times more memory as at the moment of running this
function, there are two vports allocated with their queues and vectors.
Moreover, it claims to prevent the driver from running into "bad state",
but in fact, any error during the rebuild leaves the old vport in the
partially allocated state.
Finally, if the interface is down when the function is called, it always
allocates a new queue set, but when the user decides to enable the
interface later on, vport_open() allocates them once again, IOW there's
a clear memory leak here.
Just don't allocate a new queue set when performing a reset, that solves
crashes and memory leaks. Readd the old queue number and reopen the
interface on rollback - that solves limbo states when the device is left
disabled and/or without HW queues enabled.
来源: CVE Program / CVE List V5
CVSS Information
N/A
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idpf组件在执行软重置时存在内存泄漏和崩溃。
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-2024-44964 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-44964 补丁与修复 (2)
同批安全公告 · Linux · 2024-09-04 · 共 58 条
| CVE-2024-44984 | 10.0 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-44985 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-44970 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-44998 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2024-44994 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44988 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44986 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44973 | 8.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44995 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44974 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44978 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44967 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44997 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44954 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-45000 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44951 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44959 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44987 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44949 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-44966 | 7.8 HIGH | Linux kernel 安全漏洞 |
显示前 20 条，共 58 条。 查看全部 → →
IV. Related Vulnerabilities
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