7.8

CVE-2022-0358: qemu Improper Check for Dropped Privileges

Modified
AliasesRHSA-2022:0759RHSA-2022:0886RHSA-2022:0973
Published 29-08-2022Last modified 02-08-2024

Vulnerability summary

CVE-2022-0358 is a high (CVSS 7.8) Improper Check for Dropped Privileges vulnerability in qemu. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 26.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.33%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 9 · Related 6

Timeline

  1. 29-08-2022
    PublishedVulnerability first disclosed.
  2. 02-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in the QEMU virtio-fs shared file system daemon (virtiofsd) implementation. This flaw is strictly related to CVE-2018-13405. A local guest user can create files in the directories shared by virtio-fs with unintended group ownership in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of the group. This could allow a malicious unprivileged user inside the guest to gain access to resources accessible to the root group, potentially escalating their privileges within the guest. A malicious local user in the host might also leverage this unexpected executable file created by the guest to escalate their privileges on the host system.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.33%

Chance of exploitation in the next 30 days

Percentile

27%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.33% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Redhat197 products
  • enterprise_linux8.0
  • hivex< 0:1.3.18-21.module+el8.4.0+10770+19c037f9 | < 0:1.3.18-21.module+el8.5.0+10709+b3edb581 | < 0:1.3.18-20.module+el8.2.0+5588+63a201c3
  • hivex-debuginfo< 0:1.3.18-21.module+el8.4.0+10770+19c037f9 | < 0:1.3.18-21.module+el8.5.0+10709+b3edb581 | < 0:1.3.18-20.module+el8.2.0+5588+63a201c3
  • hivex-debugsource< 0:1.3.18-21.module+el8.4.0+10770+19c037f9 | < 0:1.3.18-21.module+el8.5.0+10709+b3edb581 | < 0:1.3.18-20.module+el8.2.0+5588+63a201c3
  • hivex-devel< 0:1.3.18-21.module+el8.4.0+10770+19c037f9 | < 0:1.3.18-21.module+el8.5.0+10709+b3edb581 | < 0:1.3.18-20.module+el8.2.0+5588+63a201c3
Debian1 product
  • qemu< 1:7.0+dfsg-1
Qemu1 product
Ubuntu1 product
  • qemu< 1:6.2+dfsg-2ubuntu6.2

4 vendors · 200 products · Showing 200 of 219

References

18 links
Show all 18 references