CVE-2020-24394

moderate-risk

Published 2020-08-19

In the Linux kernel before 5.7.8, fs/nfsd/vfs.c (in the NFS server) can set incorrect permissions on new filesystem objects when the filesystem lacks ACL support, aka CID-22cf8419f131. This occurs because the current umask is not considered.

Do I need to act?

0.05% 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 7.1/10 High

LOCAL / LOW complexity

Affected Products (13)

Linux Kernel

Ubuntu Linux

Leap

Sd-Wan Edge

Starwind Virtual San

Affected Vendors

Linux Oracle Canonical Opensuse Starwindsoftware

References (20)

Third Party Advisory http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00007.html

Issue Tracking https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=962254

Release Notes https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.8

Patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=22...

Third Party Advisory https://security.netapp.com/advisory/ntap-20200904-0003/

Third Party Advisory https://usn.ubuntu.com/4465-1/

Third Party Advisory https://usn.ubuntu.com/4483-1/

Third Party Advisory https://usn.ubuntu.com/4485-1/

Patch https://www.oracle.com/security-alerts/cpuApr2021.html

Third Party Advisory https://www.starwindsoftware.com/security/sw-20210325-0004/