Description
Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
Published: 2021-08-17
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2740-1 firefox-esr security update
Debian DLA Debian DLA DLA-2745-1 thunderbird security update
Debian DSA Debian DSA DSA-4956-1 firefox-esr security update
Debian DSA Debian DSA DSA-4959-1 thunderbird security update
EUVD EUVD EUVD-2021-16443 Instruction reordering resulted in a sequence of instructions that would cause an object to be incorrectly considered during garbage collection. This led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 78.13, Thunderbird < 91, Firefox ESR < 78.13, and Firefox < 91.
Ubuntu USN Ubuntu USN USN-5037-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-5058-1 Thunderbird vulnerabilities
History

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Mozilla Firefox Firefox Esr Thunderbird
Redhat Enterprise Linux Rhel Eus
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2024-08-03T22:24:59.218Z

Reserved: 2021-04-01T00:00:00.000Z

Link: CVE-2021-29984

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-08-17T20:15:07.850

Modified: 2024-11-21T06:02:06.840

Link: CVE-2021-29984

cve-icon Redhat

Severity : Important

Publid Date: 2021-08-10T00:00:00Z

Links: CVE-2021-29984 - Bugzilla

cve-icon OpenCVE Enrichment

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Weaknesses