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Vulnerabilities CVE-2021-47351

CVE-2021-47351

High
Open
TLP:CLEAR

ubifs: Fix races between xattr_{set|get} and listxattr operations

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Description

In the Linux kernel, the following vulnerability has been resolved: ubifs: Fix races between xattr_{set|get} and listxattr operations UBIFS may occur some problems with concurrent xattr_{set|get} and listxattr operations, such as assertion failure, memory corruption, stale xattr value[1]. Fix it by importing a new rw-lock in @ubifs_inode to serilize write operations on xattr, concurrent read operations are still effective, just like ext4. [1] https://lore.kernel.org/linux-mtd/20200630130438.141649-1-houtao1@huawei.com

Details

CVSS Score
7.8
EPSS Score
0.25%

15.7th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
May 21, 2024
Last Modified
Aug 5, 2026
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