Vulnerability Information
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Vulnerability Title
ublk: detach gendisk from ublk device if add_disk() fails
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ublk: detach gendisk from ublk device if add_disk() fails Inside ublk_abort_requests(), gendisk is grabbed for aborting all inflight requests. And ublk_abort_requests() is called when exiting the uring context or handling timeout. If add_disk() fails, the gendisk may have been freed when calling ublk_abort_requests(), so use-after-free can be caused when getting disk's reference in ublk_abort_requests(). Fixes the bug by detaching gendisk from ublk device if add_disk() fails.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux kernel 安全漏洞
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，该漏洞源于在ublk模块中，当add_disk失败时，gendisk可能已被释放，但在ublk_abort_requests中仍尝试获取磁盘的引用，导致释放后重用错误，影响ublk设备的正常工作和数据传输的可靠性。
CVSS Information
N/A
Vulnerability Type
N/A