What is CVE-2021-3939?

CVE-2021-3939 is a high-severity vulnerability in Ubuntu Accountsservice, classified under CWE-590. CVSS score: 7.8/10. Published 2021-11-17.

How severe is CVE-2021-3939?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Ubuntu Accountsservice

CVE-2021-3939

Ubuntu-specific modifications to accountsservice (in patch file debian/patches/0010-set-language.patch) caused the fallback_locale variable, pointing to static storage, to be freed, in the user_change_language_authorized_cb function. This…

EPSS: 0.001 (31.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Ubuntu Accountsservice — versions 0.6.55-0ubuntu12~20.04, 0.6.55-0ubuntu13, 0.6.55-0ubuntu14

Weakness classification (CWE)

CWE-590

References

ubuntu.com/security/notices/USN-5149-1
bugs.launchpad.net/ubuntu/+source/accountsservice/+bug/1950149
packetstormsecurity.com/files/172848/Ubuntu-accountsservice-Double-Free-Memory-…

Frequently asked questions

What is CVE-2021-3939?: CVE-2021-3939 is a high-severity vulnerability in Ubuntu Accountsservice, classified under CWE-590. CVSS score: 7.8/10. Published 2021-11-17.
How severe is CVE-2021-3939?: High severity. CVSS v3 base score is 7.8 out of 10.