libceph: fix race between delayed_work() and ceph_monc_stop() 漏洞信息(CVE-2024-42232)

一、漏洞 CVE-2024-42232 基础信息

漏洞标题

libceph: 修复delayed_work()和ceph_monc_stop()之间的竞态条件

来源：AIGC 神龙大模型

漏洞描述信息

N/A

来源：AIGC 神龙大模型

CVSS信息

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

来源：AIGC 神龙大模型

漏洞类别

使用共享资源的并发执行不恰当同步问题(竞争条件)

来源：AIGC 神龙大模型

漏洞标题

libceph: fix race between delayed_work() and ceph_monc_stop()

来源：美国国家漏洞数据库 NVD

漏洞描述信息

In the Linux kernel, the following vulnerability has been resolved: libceph: fix race between delayed_work() and ceph_monc_stop() The way the delayed work is handled in ceph_monc_stop() is prone to races with mon_fault() and possibly also finish_hunting(). Both of these can requeue the delayed work which wouldn't be canceled by any of the following code in case that happens after cancel_delayed_work_sync() runs -- __close_session() doesn't mess with the delayed work in order to avoid interfering with the hunting interval logic. This part was missed in commit b5d91704f53e ("libceph: behave in mon_fault() if cur_mon < 0") and use-after-free can still ensue on monc and objects that hang off of it, with monc->auth and monc->monmap being particularly susceptible to quickly being reused. To fix this: - clear monc->cur_mon and monc->hunting as part of closing the session in ceph_monc_stop() - bail from delayed_work() if monc->cur_mon is cleared, similar to how it's done in mon_fault() and finish_hunting() (based on monc->hunting) - call cancel_delayed_work_sync() after the session is closed

来源：美国国家漏洞数据库 NVD

CVSS信息

N/A

来源：美国国家漏洞数据库 NVD

漏洞类别

N/A

来源：美国国家漏洞数据库 NVD

漏洞标题

Linux kernel 安全漏洞

来源：中国国家信息安全漏洞库 CNNVD

漏洞描述信息

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 libceph 模块在ceph_monc_stop中处理延迟工作的方式存在竞争条件，可能导致monc和挂靠在其上的对象出现释放后重用问题。

来源：中国国家信息安全漏洞库 CNNVD

CVSS信息

N/A

来源：中国国家信息安全漏洞库 CNNVD

漏洞类别

其他

来源：中国国家信息安全漏洞库 CNNVD

二、漏洞 CVE-2024-42232 的公开POC

#	POC 描述	源链接	神龙链接

三、漏洞 CVE-2024-42232 的情报信息

标题： libceph: fix race between delayed_work() and ceph_monc_stop() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
神龙速读
标题： libceph: fix race between delayed_work() and ceph_monc_stop() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
神龙速读
标题： libceph: fix race between delayed_work() and ceph_monc_stop() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
神龙速读
标题： libceph: fix race between delayed_work() and ceph_monc_stop() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
神龙速读
标题： libceph: fix race between delayed_work() and ceph_monc_stop() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
神龙速读
标题： libceph: fix race between delayed_work() and ceph_monc_stop() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
神龙速读
标题： libceph: fix race between delayed_work() and ceph_monc_stop() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
神龙速读
标题： libceph: fix race between delayed_work() and ceph_monc_stop() - kernel/git/stable/linux.git - Linux kernel stable tree -- 🔗来源链接

标签：
神龙速读
https://nvd.nist.gov/vuln/detail/CVE-2024-42232