High severity · published Aug 19, 2020
CVE-2020-24394
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…
7.1
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
before 5.7.8 · source: NVD
LE
Leap · Opensuse
15.1 · source: NVD
SE
Sd-wan Edge · Oracle
8.2 · source: NVD
SV
Starwind Virtual San · Starwindsoftware
v8; v8; v8; v8; v8; v8 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 18.04; 20.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-24394
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-24394
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=22cf8419f1319ff87ec759d0ebdff4cbafaee832
Third Party Advisory
https://security.netapp.com/advisory/ntap-20200904-0003/
Third Party Advisory
https://usn.ubuntu.com/4465-1/
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