Home/CVE/In the Linux kernel before 5.7.8, fs/nfsd/vfs.c (in the NFS server) can set incorrect permissions on new filesystem obje
CVE

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 obje

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.

HIGH · CVSS 7.1 EPSS 0.00049
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-732Incorrect Permission Assignment for Critical Resource
▤

Affected Products & Versions

5
linux kernel< 5.7.8
canonical ubuntu linuxall versions
opensuse leapall versions
oracle sd-wan edgeall versions
starwindsoftware starwind virtual sanall versions
▣

Scoring & Timeline

7.1
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Aug 2020 · 01:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
⚑

Vendor Advisories

25
rhsaRHSA-2021:1578Moderate
rhsaRHSA-2021:1739Moderate
rhsaRHSA-2021:0878Important
suse-csafSUSE-SU-2020:3204-1
suse-csafSUSE-SU-2020:3210-1
🔗

References & Sources

10
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00007.htmlThird Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=962254Issue TrackingThird Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.8Release NotesVendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=22cf8419f1319ff87ec759d0ebdff4cbafaee832PatchVendor Advisory
https://security.netapp.com/advisory/ntap-20200904-0003/Third Party Advisory
https://usn.ubuntu.com/4465-1/Third Party Advisory
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