CVE-2022-24448

low-risk

Published 2022-02-04

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.

Do I need to act?

0.02% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 3.3/10 Low

LOCAL / LOW complexity

Affected Products (4)

Linux Kernel

Debian Linux

Affected Vendors

Debian Linux

References (20)

Mailing List https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.5

Mailing List https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ac795...

Patch https://github.com/torvalds/linux/commit/ab0fc21bc7105b54bafd85bd8b82742f9e68898...

Patch https://github.com/torvalds/linux/commit/ac795161c93699d600db16c1a8cc23a65a1ecea...

Mailing List https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html

Mailing List https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html

https://lore.kernel.org/all/67d6a536-9027-1928-99b6-af512a36cd1a%40huawei.com/T/

Third Party Advisory https://www.debian.org/security/2022/dsa-5092

Third Party Advisory https://www.debian.org/security/2022/dsa-5096

Mailing List https://www.spinics.net/lists/stable/msg531976.html