{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-43958 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-43958 is a high-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 1 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-43958 and fix it if it is affected.\n\nWhat it is: CVE-2026-43958 is a high-severity memory corruption vulnerability in Red Hat Enterprise Linux 10, published on 1 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-43958 in the wild and no public exploit code.\n\nAffected product: Red Hat Enterprise Linux 10. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-43958/ (Markdown: https://insights.sbomify.com/CVE-2026-43958/index.md)","id":"CVE-2026-43958","markdown":"https://insights.sbomify.com/CVE-2026-43958/index.md","name":"CVE-2026-43958","record":{"aliases":["ALSA-2026:33731","ALSA-2026:34155","ALSA-2026:34156","AZL-89478","CLSA-2026-1783688499","CLSA-2026-1783688821","CLSA-2026-1783688923","CLSA-2026-1784070663","CLSA-2026-1784294795","CLSA-2026-1787666659","CLSA-2026-1787732471","DEBIAN-CVE-2026-43958","GHSA-pgh2-hfvj-4q69","RHSA-2026:33731","RHSA-2026:34155","RHSA-2026:34156","RHSA-2026:68702","RHSA-2026:71600","RHSA-2026:72277","RHSA-2026:72278","RLSA-2026:33731","RLSA-2026:34155","RLSA-2026:34156","SUSE-SU-2026:23119-1","SUSE-SU-2026:23141-1","SUSE-SU-2026:3449-1","SUSE-SU-2026:3468-1","UBUNTU-CVE-2026-43958","openSUSE-SU-2026:11430-1","openSUSE-SU-2026:21525-1"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux OS","requires_auth":"low_privilege","summary":"A local attacker can exploit a stack buffer overflow in rrdcached to execute arbitrary code or crash the service, affecting Linux systems using rrdtool.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-121","name":"Stack-based Buffer Overflow"}],"description":"A flaw was found in rrdcached, a component of rrdtool. A local attacker with access to a rrdcached socket can exploit a stack-based buffer overflow by sending an oversized CREATE request. This vulnerability can lead to a denial of service by crashing the daemon or potentially allow for arbitrary code execution, impacting the integrity and confidentiality of data.","ecosystems":["AlmaLinux:10","AlmaLinux:8","AlmaLinux:9","Red Hat:enterprise_linux:10.2","Red Hat:enterprise_linux:8::appstream","Red Hat:enterprise_linux:8::crb","Red Hat:enterprise_linux:9::appstream","Red Hat:enterprise_linux:9::crb","Red Hat:enterprise_linux_eus:10.0","Red Hat:rhel_e4s:9.2::appstream","Red Hat:rhel_e4s:9.4::appstream","Red Hat:rhel_eus:9.6::appstream","Rocky Linux:10","Rocky Linux:8","Rocky Linux:9","SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS","SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS","SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS","SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS","SUSE:Linux Enterprise Module for Basesystem 15 SP7","SUSE:Linux Enterprise Server 15 SP4-LTSS","SUSE:Linux Enterprise Server 15 SP5-LTSS","SUSE:Linux Enterprise Server 15 SP6-LTSS","SUSE:Linux Enterprise Server 16.0","SUSE:Linux Enterprise Server for SAP Applications 15 SP4","SUSE:Linux Enterprise Server for SAP Applications 15 SP5","SUSE:Linux Enterprise Server for SAP Applications 15 SP6","SUSE:Linux Enterprise Server for SAP applications 16.0","openSUSE:Leap 16.0","openSUSE:Tumbleweed"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Rrdtool: rrdtool: stack buffer overflow allows local code execution or denial of service","id":"CVE-2026-43958","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2026"},"n_packages":107,"n_references":9,"next":{"headline":"Code injection in Red Hat Enterprise Linux 10","id":"CVE-2026-43961"},"packages":[{"ecosystem":"AlmaLinux:10","fixed":["1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"python3-rrdtool","purl":"pkg:rpm/almalinux/python3-rrdtool","source":"ALSA-2026:33731"},{"ecosystem":"AlmaLinux:10","fixed":["1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool","purl":"pkg:rpm/almalinux/rrdtool","source":"ALSA-2026:33731"},{"ecosystem":"AlmaLinux:10","fixed":["1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-devel","purl":"pkg:rpm/almalinux/rrdtool-devel","source":"ALSA-2026:33731"},{"ecosystem":"AlmaLinux:10","fixed":["1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-doc","purl":"pkg:rpm/almalinux/rrdtool-doc","source":"ALSA-2026:33731"},{"ecosystem":"AlmaLinux:10","fixed":["1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-lua","purl":"pkg:rpm/almalinux/rrdtool-lua","source":"ALSA-2026:33731"},{"ecosystem":"AlmaLinux:10","fixed":["1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-perl","purl":"pkg:rpm/almalinux/rrdtool-perl","source":"ALSA-2026:33731"},{"ecosystem":"AlmaLinux:10","fixed":["1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-ruby","purl":"pkg:rpm/almalinux/rrdtool-ruby","source":"ALSA-2026:33731"},{"ecosystem":"AlmaLinux:10","fixed":["1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-tcl","purl":"pkg:rpm/almalinux/rrdtool-tcl","source":"ALSA-2026:33731"},{"ecosystem":"AlmaLinux:8","fixed":["1.7.0-17.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3-rrdtool","purl":"pkg:rpm/almalinux/python3-rrdtool","source":"ALSA-2026:34155"},{"ecosystem":"AlmaLinux:8","fixed":["1.7.0-17.el8_10"],"introduced":["0"],"last_affected":[],"package":"rrdtool","purl":"pkg:rpm/almalinux/rrdtool","source":"ALSA-2026:34155"},{"ecosystem":"AlmaLinux:8","fixed":["1.7.0-17.el8_10"],"introduced":["0"],"last_affected":[],"package":"rrdtool-devel","purl":"pkg:rpm/almalinux/rrdtool-devel","source":"ALSA-2026:34155"},{"ecosystem":"AlmaLinux:8","fixed":["1.7.0-17.el8_10"],"introduced":["0"],"last_affected":[],"package":"rrdtool-doc","purl":"pkg:rpm/almalinux/rrdtool-doc","source":"ALSA-2026:34155"},{"ecosystem":"AlmaLinux:8","fixed":["1.7.0-17.el8_10"],"introduced":["0"],"last_affected":[],"package":"rrdtool-lua","purl":"pkg:rpm/almalinux/rrdtool-lua","source":"ALSA-2026:34155"},{"ecosystem":"AlmaLinux:8","fixed":["1.7.0-17.el8_10"],"introduced":["0"],"last_affected":[],"package":"rrdtool-perl","purl":"pkg:rpm/almalinux/rrdtool-perl","source":"ALSA-2026:34155"},{"ecosystem":"AlmaLinux:8","fixed":["1.7.0-17.el8_10"],"introduced":["0"],"last_affected":[],"package":"rrdtool-ruby","purl":"pkg:rpm/almalinux/rrdtool-ruby","source":"ALSA-2026:34155"},{"ecosystem":"AlmaLinux:8","fixed":["1.7.0-17.el8_10"],"introduced":["0"],"last_affected":[],"package":"rrdtool-tcl","purl":"pkg:rpm/almalinux/rrdtool-tcl","source":"ALSA-2026:34155"},{"ecosystem":"AlmaLinux:9","fixed":["1.7.2-22.el9_8"],"introduced":["0"],"last_affected":[],"package":"python3-rrdtool","purl":"pkg:rpm/almalinux/python3-rrdtool","source":"ALSA-2026:34156"},{"ecosystem":"AlmaLinux:9","fixed":["1.7.2-22.el9_8"],"introduced":["0"],"last_affected":[],"package":"rrdtool","purl":"pkg:rpm/almalinux/rrdtool","source":"ALSA-2026:34156"},{"ecosystem":"AlmaLinux:9","fixed":["1.7.2-22.el9_8"],"introduced":["0"],"last_affected":[],"package":"rrdtool-devel","purl":"pkg:rpm/almalinux/rrdtool-devel","source":"ALSA-2026:34156"},{"ecosystem":"AlmaLinux:9","fixed":["1.7.2-22.el9_8"],"introduced":["0"],"last_affected":[],"package":"rrdtool-doc","purl":"pkg:rpm/almalinux/rrdtool-doc","source":"ALSA-2026:34156"},{"ecosystem":"AlmaLinux:9","fixed":["1.7.2-22.el9_8"],"introduced":["0"],"last_affected":[],"package":"rrdtool-lua","purl":"pkg:rpm/almalinux/rrdtool-lua","source":"ALSA-2026:34156"},{"ecosystem":"AlmaLinux:9","fixed":["1.7.2-22.el9_8"],"introduced":["0"],"last_affected":[],"package":"rrdtool-perl","purl":"pkg:rpm/almalinux/rrdtool-perl","source":"ALSA-2026:34156"},{"ecosystem":"AlmaLinux:9","fixed":["1.7.2-22.el9_8"],"introduced":["0"],"last_affected":[],"package":"rrdtool-ruby","purl":"pkg:rpm/almalinux/rrdtool-ruby","source":"ALSA-2026:34156"},{"ecosystem":"AlmaLinux:9","fixed":["1.7.2-22.el9_8"],"introduced":["0"],"last_affected":[],"package":"rrdtool-tcl","purl":"pkg:rpm/almalinux/rrdtool-tcl","source":"ALSA-2026:34156"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"python3-rrdtool","purl":"pkg:rpm/redhat/python3-rrdtool","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"python3-rrdtool-debuginfo","purl":"pkg:rpm/redhat/python3-rrdtool-debuginfo","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool","purl":"pkg:rpm/redhat/rrdtool","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-debuginfo","purl":"pkg:rpm/redhat/rrdtool-debuginfo","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-debugsource","purl":"pkg:rpm/redhat/rrdtool-debugsource","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-devel","purl":"pkg:rpm/redhat/rrdtool-devel","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-doc","purl":"pkg:rpm/redhat/rrdtool-doc","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-lua","purl":"pkg:rpm/redhat/rrdtool-lua","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-lua-debuginfo","purl":"pkg:rpm/redhat/rrdtool-lua-debuginfo","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-perl","purl":"pkg:rpm/redhat/rrdtool-perl","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-perl-debuginfo","purl":"pkg:rpm/redhat/rrdtool-perl-debuginfo","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-ruby","purl":"pkg:rpm/redhat/rrdtool-ruby","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-ruby-debuginfo","purl":"pkg:rpm/redhat/rrdtool-ruby-debuginfo","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-tcl","purl":"pkg:rpm/redhat/rrdtool-tcl","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:1.8.0-21.el10_2"],"introduced":["0"],"last_affected":[],"package":"rrdtool-tcl-debuginfo","purl":"pkg:rpm/redhat/rrdtool-tcl-debuginfo","source":"RHSA-2026:33731"},{"ecosystem":"Red Hat:enterprise_linux:8::appstream","fixed":["0:1.7.0-17.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3-rrdtool-debuginfo","purl":"pkg:rpm/redhat/python3-rrdtool-debuginfo","source":"RHSA-2026:34155"}],"prev":{"headline":"Apache HTTP Server: OOB Read in `merge_response_headers` can cause crash","id":"CVE-2026-43951"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 10.0 Extended Update Support","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9","Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions","Red Hat Enterprise Linux 9.6 Extended Update Support"],"published":"2026-06-01","related":[],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-28","vendors":["Red Hat"]},"summary":"A local attacker can exploit a stack buffer overflow in rrdcached to execute arbitrary code or crash the service, affecting Linux systems using rrdtool.","url":"https://insights.sbomify.com/CVE-2026-43958/"}