CVE-2022-24448 Information

Description

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.

CVSS Vector

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

Reference

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac795161c93699d600db16c1a8cc23a65a1eceaf https://www.spinics.net/lists/stable/msg531976.html https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.5 https://github.com/torvalds/linux/commit/ac795161c93699d600db16c1a8cc23a65a1eceaf https://www.debian.org/security/2022/dsa-5096 https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html https://www.debian.org/security/2022/dsa-5092 https://github.com/torvalds/linux/commit/ab0fc21bc7105b54bafd85bd8b82742f9e68898a https://lore.kernel.org/all/67d6a536-9027-1928-99b6-af512a36cd1a@huawei.com/T/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

3.3