CVE-2021-29982

CVE-2021-29982 affects Firefox and Thunderbird prior to version 91. Root cause: incorrect JIT optimization causing type confusion, leading to potential leakage of a single memory bit. Connected advisories confirm the issue and describe remediation as upgrading to Firefox/Thunderbird version 91 or...

CVE-2021-29982

Due to incorrect JIT optimization, we incorrectly interpreted data from the wrong type of object, resulting in the potential leak of a single bit of memory. This vulnerability affects Firefox 91 and Thunderbird 91...

CVE-2021-29982: Missing Release of Resource after Effective Lifetime

Due to incorrect JIT optimization, we incorrectly interpreted data from the wrong type of object, resulting in the potential leak of a single bit of memory. This vulnerability affects Firefox 91 and Thunderbird 91...

SUSE-SU-2021:2691-1 Security update for MozillaFirefox

This update for MozillaFirefox fixes the following issues: Firefox Extended Support Release 78.13.0 ESR MFSA 2021-34, bsc1188891: - CVE-2021-29986: Race condition when resolving DNS names could have led to memory corruption - CVE-2021-29988: Memory corruption as a result of incorrect style...

Important: Red Hat Security Advisory: firefox security update

An update for firefox is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

Mozilla: Incorrect instruction reordering during JIT optimization

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...

Important: Red Hat Security Advisory: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available...

Important: Red Hat Security Advisory: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 8.1 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available...

Important: firefox security update

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 78.13.0 ESR. Security Fixes: Mozilla: Uninitialized memory in a canvas object could have led to memory corruption CVE-2021-29980 Mozilla: Incorre...

Important: thunderbird security update

Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.13.0. Security Fixes: Mozilla: Uninitialized memory in a canvas object could have led to memory corruption CVE-2021-29980 Mozilla: Incorrect instruction reordering during JIT optimization...

RHEL 8 : thunderbird (RHSA-2021:3155)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:3155 advisory. Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.13.0. Security Fixes: Mozilla:...

RHEL 8 : firefox (RHSA-2021:3157)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:3157 advisory. Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox...

RHEL 8 : thunderbird (RHSA-2021:3162)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:3162 advisory. Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.13.0. Security Fixes: Mozilla:...

RHEL 8 : firefox (RHSA-2021:3156)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:3156 advisory. Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox...

CentOS 8 : firefox (CESA-2021:3157)

The remote CentOS Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the CESA-2021:3157 advisory. - Mozilla: Uninitialized memory in a canvas object could have led to memory corruption CVE-2021-29980 - Mozilla: Incorrect instruction reordering durin...

RHEL 8 : thunderbird (RHSA-2021:3161)

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:3161 advisory. Mozilla Thunderbird is a standalone mail and newsgroup client. This update upgrades Thunderbird to version 78.13.0. Security Fixes: Mozilla:...

Security fix for the ALT Linux 10 package thunderbird version 91.0-alt1

Aug. 12, 2021 Andrey Cherepanov 91.0-alt1 - New version. - Security fixes: + CVE-2021-29986 Race condition when resolving DNS names could have led to memory corruption + CVE-2021-29981 Live range splitting could have led to conflicting assignments in the JIT + CVE-2021-29988 Memory corruption as ...

Ubuntu 18.04 LTS / 20.04 LTS : Firefox vulnerabilities (USN-5037-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5037-1 advisory. Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could...

Denial Of Service (DoS)

firefox is vulnerable to denial of service. An exploitable crash is possible from incorrect instruction reordering during JIT optimization...

UBUNTU-CVE-2021-29982

Due to incorrect JIT optimization, we incorrectly interpreted data from the wrong type of object, resulting in the potential leak of a single bit of memory. This vulnerability affects Firefox 91 and Thunderbird 91...