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An issue was discovered in fs/nfs/dir.c in the Linux kernel before 5.16.5. If an application sets the O_DIRECTORY flag and tries to open a regular file nfs_atomic_open() performs a regular lookup. If a regular file is found ENOTDIR should occur but the server instead returns uninitialized data in the file descriptor.

🗓️ 10 Feb 2022 08:00:00Reported by MicrosoftType 
mscve
 mscve🔗 msrc.microsoft.com👁 6 Views

Linux kernel before 5.16.5: O_DIRECTORY on a regular file via nfs_atomic_open should return ENOTDIR.

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Rows per page
Vulners
Node
microsoftcbl2_kernel_5.15.26.1-1Range<5.15.26.1-1
OR
microsoftcm1_kernel_5.10.102.1-1Range<-

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10 Feb 2022 08:00Current
7.2High risk
Vulners AI Score7.2
CVSS 21.9
CVSS 3.13.3
EPSS0.00016
linux kernelnfso directorynfs atomic openregular filenot a directory
6