{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "Copyright © Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1837.json" } ], "title": "libjxl: libjxl: Out-of-bounds write in grayscale color transformation when using LCMS2", "tracking": { "current_release_date": "2026-06-30T04:12:37+00:00", "generator": { "date": "2026-06-30T04:12:37+00:00", "engine": { "name": "Red Hat SDEngine", "version": "5.3.0" } }, "id": "CVE-2026-1837", "initial_release_date": "2026-02-11T15:19:55.442000+00:00", "revision_history": [ { "date": "2026-02-11T15:19:55.442000+00:00", "number": "1", "summary": "Initial version" }, { "date": "2026-06-08T21:03:12+00:00", "number": "2", "summary": "Current version" }, { "date": "2026-06-30T04:12:37+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux 10", "product": { "name": "Red Hat Enterprise Linux 10", "product_id": "red_hat_enterprise_linux_10", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:10" } } } ], "category": "product_family", "name": "Red Hat Enterprise Linux 10" }, { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux 7", "product": { "name": "Red Hat Enterprise Linux 7", "product_id": "red_hat_enterprise_linux_7", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:7" } } } ], "category": "product_family", "name": "Red Hat Enterprise Linux 7" }, { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux 8", "product": { "name": "Red Hat Enterprise Linux 8", "product_id": "red_hat_enterprise_linux_8", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:8" } } } ], "category": "product_family", "name": "Red Hat Enterprise Linux 8" }, { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux 9", "product": { "name": "Red Hat Enterprise Linux 9", "product_id": "red_hat_enterprise_linux_9", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:9" } } } ], "category": "product_family", "name": "Red Hat Enterprise Linux 9" }, { "category": "product_version", "name": "firefox.src", "product": { "name": "firefox.src", "product_id": "firefox.src", "product_identification_helper": { "purl": "pkg:rpm/redhat/firefox?arch=src" } } }, { "category": "product_version", "name": "firefox", "product": { "name": "firefox", "product_id": "firefox", "product_identification_helper": { "purl": "pkg:rpm/redhat/firefox" } } }, { "category": "product_version", "name": "thunderbird", "product": { "name": "thunderbird", "product_id": "thunderbird", "product_identification_helper": { "purl": "pkg:rpm/redhat/thunderbird" } } }, { "category": "product_version", "name": "thunderbird.src", "product": { "name": "thunderbird.src", "product_id": "thunderbird.src", "product_identification_helper": { "purl": "pkg:rpm/redhat/thunderbird?arch=src" } } }, { "category": "product_version", "name": "firefox-x11", "product": { "name": "firefox-x11", "product_id": "firefox-x11", "product_identification_helper": { "purl": "pkg:rpm/redhat/firefox-x11" } } } ], "category": "vendor", "name": "Red Hat" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "firefox as a component of Red Hat Enterprise Linux 10", "product_id": "red_hat_enterprise_linux_10:firefox" }, "product_reference": "firefox", "relates_to_product_reference": "red_hat_enterprise_linux_10" }, { "category": "default_component_of", "full_product_name": { "name": "firefox.src as a component of Red Hat Enterprise Linux 10", "product_id": "red_hat_enterprise_linux_10:firefox.src" }, "product_reference": "firefox.src", "relates_to_product_reference": "red_hat_enterprise_linux_10" }, { "category": "default_component_of", "full_product_name": { "name": "thunderbird as a component of Red Hat Enterprise Linux 10", "product_id": "red_hat_enterprise_linux_10:thunderbird" }, "product_reference": "thunderbird", "relates_to_product_reference": "red_hat_enterprise_linux_10" }, { "category": "default_component_of", "full_product_name": { "name": "thunderbird.src as a component of Red Hat Enterprise Linux 10", "product_id": "red_hat_enterprise_linux_10:thunderbird.src" }, "product_reference": "thunderbird.src", "relates_to_product_reference": "red_hat_enterprise_linux_10" }, { "category": "default_component_of", "full_product_name": { "name": "firefox as a component of Red Hat Enterprise Linux 7", "product_id": "red_hat_enterprise_linux_7:firefox" }, "product_reference": "firefox", "relates_to_product_reference": "red_hat_enterprise_linux_7" }, { "category": "default_component_of", "full_product_name": { "name": "firefox.src as a component of Red Hat Enterprise Linux 7", "product_id": "red_hat_enterprise_linux_7:firefox.src" }, "product_reference": "firefox.src", "relates_to_product_reference": "red_hat_enterprise_linux_7" }, { "category": "default_component_of", "full_product_name": { "name": "firefox as a component of Red Hat Enterprise Linux 8", "product_id": "red_hat_enterprise_linux_8:firefox" }, "product_reference": "firefox", "relates_to_product_reference": "red_hat_enterprise_linux_8" }, { "category": "default_component_of", "full_product_name": { "name": "firefox.src as a component of Red Hat Enterprise Linux 8", "product_id": "red_hat_enterprise_linux_8:firefox.src" }, "product_reference": "firefox.src", "relates_to_product_reference": "red_hat_enterprise_linux_8" }, { "category": "default_component_of", "full_product_name": { "name": "thunderbird as a component of Red Hat Enterprise Linux 8", "product_id": "red_hat_enterprise_linux_8:thunderbird" }, "product_reference": "thunderbird", "relates_to_product_reference": "red_hat_enterprise_linux_8" }, { "category": "default_component_of", "full_product_name": { "name": "thunderbird.src as a component of Red Hat Enterprise Linux 8", "product_id": "red_hat_enterprise_linux_8:thunderbird.src" }, "product_reference": "thunderbird.src", "relates_to_product_reference": "red_hat_enterprise_linux_8" }, { "category": "default_component_of", "full_product_name": { "name": "firefox as a component of Red Hat Enterprise Linux 9", "product_id": "red_hat_enterprise_linux_9:firefox" }, "product_reference": "firefox", "relates_to_product_reference": "red_hat_enterprise_linux_9" }, { "category": "default_component_of", "full_product_name": { "name": "firefox-x11 as a component of Red Hat Enterprise Linux 9", "product_id": "red_hat_enterprise_linux_9:firefox-x11" }, "product_reference": "firefox-x11", "relates_to_product_reference": "red_hat_enterprise_linux_9" }, { "category": "default_component_of", "full_product_name": { "name": "firefox.src as a component of Red Hat Enterprise Linux 9", "product_id": "red_hat_enterprise_linux_9:firefox.src" }, "product_reference": "firefox.src", "relates_to_product_reference": "red_hat_enterprise_linux_9" }, { "category": "default_component_of", "full_product_name": { "name": "thunderbird as a component of Red Hat Enterprise Linux 9", "product_id": "red_hat_enterprise_linux_9:thunderbird" }, "product_reference": "thunderbird", "relates_to_product_reference": "red_hat_enterprise_linux_9" }, { "category": "default_component_of", "full_product_name": { "name": "thunderbird.src as a component of Red Hat Enterprise Linux 9", "product_id": "red_hat_enterprise_linux_9:thunderbird.src" }, "product_reference": "thunderbird.src", "relates_to_product_reference": "red_hat_enterprise_linux_9" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-1837", "cwe": { "id": "CWE-787", "name": "Out-of-bounds Write" }, "discovery_date": "2026-02-11T16:01:30.361885+00:00", "flags": [ { "label": "vulnerable_code_not_present", "product_ids": [ "red_hat_enterprise_linux_10:firefox", "red_hat_enterprise_linux_10:firefox.src", "red_hat_enterprise_linux_10:thunderbird", "red_hat_enterprise_linux_10:thunderbird.src", "red_hat_enterprise_linux_7:firefox", "red_hat_enterprise_linux_7:firefox.src", "red_hat_enterprise_linux_8:firefox", "red_hat_enterprise_linux_8:firefox.src", "red_hat_enterprise_linux_8:thunderbird", "red_hat_enterprise_linux_8:thunderbird.src", "red_hat_enterprise_linux_9:firefox", "red_hat_enterprise_linux_9:firefox-x11", "red_hat_enterprise_linux_9:firefox.src", "red_hat_enterprise_linux_9:thunderbird", "red_hat_enterprise_linux_9:thunderbird.src" ] } ], "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "2438974" } ], "notes": [ { "category": "description", "text": "An out of bounds write has been discovered in libjxl. A specially-crafted file can cause libjxl's decoder to write pixel data to uninitialized unallocated memory. Soon after that data from another uninitialized unallocated region is copied to pixel data. This can be done by requesting color transformation of grayscale images to another grayscale color space. Buffers allocated for 1-float-per-pixel are used as if they are allocated for 3-float-per-pixel. That happens only if LCMS2 is used as CMS engine. There is another CMS engine available (selected by build flags).", "title": "Vulnerability description" }, { "category": "summary", "text": "libjxl: libjxl: Out-of-bounds write in grayscale color transformation when using LCMS2", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "known_not_affected": [ "red_hat_enterprise_linux_10:firefox", "red_hat_enterprise_linux_10:firefox.src", "red_hat_enterprise_linux_10:thunderbird", "red_hat_enterprise_linux_10:thunderbird.src", "red_hat_enterprise_linux_7:firefox", "red_hat_enterprise_linux_7:firefox.src", "red_hat_enterprise_linux_8:firefox", "red_hat_enterprise_linux_8:firefox.src", "red_hat_enterprise_linux_8:thunderbird", "red_hat_enterprise_linux_8:thunderbird.src", "red_hat_enterprise_linux_9:firefox", "red_hat_enterprise_linux_9:firefox-x11", "red_hat_enterprise_linux_9:firefox.src", "red_hat_enterprise_linux_9:thunderbird", "red_hat_enterprise_linux_9:thunderbird.src" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2026-1837" }, { "category": "external", "summary": "RHBZ#2438974", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2438974" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2026-1837", "url": "https://www.cve.org/CVERecord?id=CVE-2026-1837" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-1837", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1837" }, { "category": "external", "summary": "https://github.com/libjxl/libjxl/issues/4549", "url": "https://github.com/libjxl/libjxl/issues/4549" } ], "release_date": "2026-02-11T15:19:55.442000+00:00", "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1" }, "products": [ "red_hat_enterprise_linux_10:firefox", "red_hat_enterprise_linux_10:firefox.src", "red_hat_enterprise_linux_10:thunderbird", "red_hat_enterprise_linux_10:thunderbird.src", "red_hat_enterprise_linux_7:firefox", "red_hat_enterprise_linux_7:firefox.src", "red_hat_enterprise_linux_8:firefox", "red_hat_enterprise_linux_8:firefox.src", "red_hat_enterprise_linux_8:thunderbird", "red_hat_enterprise_linux_8:thunderbird.src", "red_hat_enterprise_linux_9:firefox", "red_hat_enterprise_linux_9:firefox-x11", "red_hat_enterprise_linux_9:firefox.src", "red_hat_enterprise_linux_9:thunderbird", "red_hat_enterprise_linux_9:thunderbird.src" ] } ], "threats": [ { "category": "impact", "details": "Important", "product_ids": [ "red_hat_enterprise_linux_10:firefox", "red_hat_enterprise_linux_10:firefox.src", "red_hat_enterprise_linux_10:thunderbird", "red_hat_enterprise_linux_10:thunderbird.src", "red_hat_enterprise_linux_7:firefox", "red_hat_enterprise_linux_7:firefox.src", "red_hat_enterprise_linux_8:firefox", "red_hat_enterprise_linux_8:firefox.src", "red_hat_enterprise_linux_8:thunderbird", "red_hat_enterprise_linux_8:thunderbird.src", "red_hat_enterprise_linux_9:firefox", "red_hat_enterprise_linux_9:firefox-x11", "red_hat_enterprise_linux_9:firefox.src", "red_hat_enterprise_linux_9:thunderbird", "red_hat_enterprise_linux_9:thunderbird.src" ] } ], "title": "libjxl: libjxl: Out-of-bounds write in grayscale color transformation when using LCMS2" } ] }