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CVE-2021-3608: debian debian_linux Access of Uninitialized Pointer

Modified
AliasesUBUNTU-CVE-2021-3608DEBIAN-CVE-2021-3608
Published 24-02-2022Last modified 03-08-2024

Vulnerability summary

CVE-2021-3608 is a medium (CVSS 6.0) Access of Uninitialized Pointer vulnerability in debian debian_linux. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 30.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.0/10
010
Medium · v3.1 (NVD)
EPSS score
0.36%
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 11 · Related 10
DLA-3099-1OPENSUSE-SU-2021:1202-1OPENSUSE-SU-2021:2442-1OPENSUSE-SU-2021:2474-1OPENSUSE-SU-2021:2591-1OPENSUSE-SU-2024:11287-1

Timeline

  1. 24-02-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest and may result in a crash of QEMU or cause undefined behavior due to the access of an uninitialized pointer. The highest threat from this vulnerability is to system availability.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

30%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.36% 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, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian2 products
Fedoraproject1 product
Qemu1 product
Ubuntu1 product
  • qemu< 1:4.2-3ubuntu6.17 | < 1:6.0+dfsg-2expubuntu1

4 vendors · 5 products

References

10 links