High severity8.8NVD Advisory· Published Dec 19, 2023· Updated Jun 17, 2026
CVE-2023-6862
CVE-2023-6862
Description
A use-after-free was identified in the nsDNSService::Init. This issue appears to manifest rarely during start-up. This vulnerability affects Firefox ESR < 115.6 and Thunderbird < 115.6.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
39<115.6+ 2 more
- (no CPE)range: <115.6
- (no CPE)range: unspecified
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*range: <115.6
<115.6+ 2 more
- (no CPE)range: <115.6
- (no CPE)range: unspecified
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*range: <115.6
- osv-coords30 versionspkg:rpm/almalinux/firefox-x11pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweedpkg:rpm/almalinux/thunderbirdpkg:rpm/almalinux/firefoxpkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP5pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.5
< 115.6.0-1.el9_3.alma+ 29 more
- (no CPE)range: < 115.6.0-1.el9_3.alma
- (no CPE)range: < 115.6.0-1.1
- (no CPE)range: < 115.6.0-1.el9_3.alma
- (no CPE)range: < 115.6.0-1.el8_9.alma
- (no CPE)range: < 115.6.0-150200.8.142.2
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-112.194.1
- (no CPE)range: < 115.6.0-112.194.1
- (no CPE)range: < 115.6.0-112.194.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150200.152.120.1
- (no CPE)range: < 115.6.0-150000.150.119.1
- (no CPE)range: < 115.6.0-150000.150.119.1
- (no CPE)range: < 115.6.0-150000.150.119.1
- (no CPE)range: < 115.6.0-150200.8.142.2
- (no CPE)range: < 115.6.0-150200.8.142.2
Patches
Vulnerability mechanics
References
8- lists.debian.org/debian-lts-announce/2023/12/msg00020.htmlnvdMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2023/12/msg00021.htmlnvdMailing ListThird Party Advisory
- security.gentoo.org/glsa/202401-10nvdThird Party Advisory
- www.debian.org/security/2023/dsa-5581nvdThird Party Advisory
- www.debian.org/security/2023/dsa-5582nvdThird Party Advisory
- www.mozilla.org/security/advisories/mfsa2023-54/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2023-55/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions Required
News mentions
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