{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-11850 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-11850 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 11 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-11850 and fix it if it is affected.\n\nWhat it is: CVE-2026-11850 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, published on 11 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-11850 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-2026-11850/ (Markdown: https://insights.sbomify.com/CVE-2026-11850/index.md)","id":"CVE-2026-11850","markdown":"https://insights.sbomify.com/CVE-2026-11850/index.md","name":"CVE-2026-11850","record":{"aliases":["BELL-CVE-2026-11850","DEBIAN-CVE-2026-11850","ECHO-b5cb-5a81-96de","GHSA-85rq-mqr4-hjw7","RHSA-2026:25520","ROOT-OS-DEBIAN-12-CVE-2026-11850","ROOT-OS-DEBIAN-13-CVE-2026-11850","SUSE-SU-2026:22450-1","SUSE-SU-2026:22702-1","SUSE-SU-2026:2847-1","SUSE-SU-2026:2849-1","SUSE-SU-2026:2954-1","UBUNTU-CVE-2026-11850","openSUSE-SU-2026:11177-1","openSUSE-SU-2026:21238-1"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["data_read","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"MIT Kerberos","requires_auth":"high_privilege","summary":"An integer underflow in MIT Kerberos allows heap out-of-bounds reads via malicious LDAP data, potentially causing information disclosure or crashes.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[],"cvss":{"score":5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-191","name":"Integer Underflow (Wrap or Wraparound)"}],"description":"An integer underflow vulnerability was found in MIT krb5 in the berval2tl_data() function in plugins/kdb/ldap/libkdb_ldap/ldap_principal2.c. The function performs an unsigned subtraction (bv_len - 2) without a prior bounds check. When bv_len is 0 or 1, the subtraction wraps to a large value which is then truncated to uint16_t, yielding 0xFFFE (65534) or 0xFFFF (65535). The subsequent malloc succeeds and memcpy reads up to 65534 bytes from a 0-1 byte buffer, resulting in a heap out-of-bounds read.\nThe attack vector involves a malicious or compromised LDAP KDB backend returning a krbExtraData attribute with bv_len \u003c 2, triggering the underflow when the KDC or kadmind reads principal data.","ecosystems":["Red Hat:hummingbird:1","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 Micro 5.3","SUSE:Linux Enterprise Micro 5.4","SUSE:Linux Enterprise Micro 5.5","SUSE:Linux Enterprise Server 12 SP5-LTSS","SUSE:Linux Enterprise Server 15 SP4-LTSS","SUSE:Linux Enterprise Server 15 SP5-LTSS","SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5","SUSE:Linux Enterprise Server for SAP Applications 15 SP4","SUSE:Linux Enterprise Server for SAP Applications 15 SP5","SUSE:Linux Micro 6.0","SUSE:Linux Micro 6.1","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":"Krb5: krb5: integer underflow in berval2tl_data() leads to heap out-of-bounds read","id":"CVE-2026-11850","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"integer_overflow","year":"2026"},"n_packages":27,"n_references":3,"next":{"headline":"SQL injection in Router","id":"CVE-2026-11851"},"packages":[{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.22.2-8.hum1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/redhat/krb5","source":"RHSA-2026:25520"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.22.2-8.hum1"],"introduced":["0"],"last_affected":[],"package":"krb5-devel","purl":"pkg:rpm/redhat/krb5-devel","source":"RHSA-2026:25520"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.22.2-8.hum1"],"introduced":["0"],"last_affected":[],"package":"krb5-libs","purl":"pkg:rpm/redhat/krb5-libs","source":"RHSA-2026:25520"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.22.2-8.hum1"],"introduced":["0"],"last_affected":[],"package":"krb5-pkinit","purl":"pkg:rpm/redhat/krb5-pkinit","source":"RHSA-2026:25520"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.22.2-8.hum1"],"introduced":["0"],"last_affected":[],"package":"krb5-server","purl":"pkg:rpm/redhat/krb5-server","source":"RHSA-2026:25520"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.22.2-8.hum1"],"introduced":["0"],"last_affected":[],"package":"krb5-server-ldap","purl":"pkg:rpm/redhat/krb5-server-ldap","source":"RHSA-2026:25520"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.22.2-8.hum1"],"introduced":["0"],"last_affected":[],"package":"krb5-tests","purl":"pkg:rpm/redhat/krb5-tests","source":"RHSA-2026:25520"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.22.2-8.hum1"],"introduced":["0"],"last_affected":[],"package":"krb5-workstation","purl":"pkg:rpm/redhat/krb5-workstation","source":"RHSA-2026:25520"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.22.2-8.hum1"],"introduced":["0"],"last_affected":[],"package":"krb5-xrealmauthz","purl":"pkg:rpm/redhat/krb5-xrealmauthz","source":"RHSA-2026:25520"},{"ecosystem":"Red Hat:hummingbird:1","fixed":["0:1.22.2-8.hum1"],"introduced":["0"],"last_affected":[],"package":"libkadm5","purl":"pkg:rpm/redhat/libkadm5","source":"RHSA-2026:25520"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS","fixed":["1.19.2-150400.3.24.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS","source":"SUSE-SU-2026:2954-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS","fixed":["1.19.2-150400.3.24.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSS","source":"SUSE-SU-2026:2954-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS","fixed":["1.20.1-150500.3.23.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS","source":"SUSE-SU-2026:2847-1"},{"ecosystem":"SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS","fixed":["1.20.1-150500.3.23.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSS","source":"SUSE-SU-2026:2847-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.3","fixed":["1.19.2-150400.3.24.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.3","source":"SUSE-SU-2026:2954-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.4","fixed":["1.19.2-150400.3.24.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.4","source":"SUSE-SU-2026:2954-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.5","fixed":["1.20.1-150500.3.23.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.5","source":"SUSE-SU-2026:2847-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP5-LTSS","fixed":["1.16.3-46.24.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSS","source":"SUSE-SU-2026:2849-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15 SP4-LTSS","fixed":["1.19.2-150400.3.24.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS","source":"SUSE-SU-2026:2954-1"},{"ecosystem":"SUSE:Linux Enterprise Server 15 SP5-LTSS","fixed":["1.20.1-150500.3.23.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS","source":"SUSE-SU-2026:2847-1"},{"ecosystem":"SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5","fixed":["1.16.3-46.24.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5","source":"SUSE-SU-2026:2849-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP4","fixed":["1.19.2-150400.3.24.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4","source":"SUSE-SU-2026:2954-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 15 SP5","fixed":["1.20.1-150500.3.23.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5","source":"SUSE-SU-2026:2847-1"},{"ecosystem":"SUSE:Linux Micro 6.0","fixed":["1.20.1-9.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Micro%206.0","source":"SUSE-SU-2026:22702-1"},{"ecosystem":"SUSE:Linux Micro 6.1","fixed":["1.21.3-slfo.1.1_5.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/suse/krb5\u0026distro=SUSE%20Linux%20Micro%206.1","source":"SUSE-SU-2026:22450-1"},{"ecosystem":"openSUSE:Leap 16.0","fixed":["1.21.3-160000.4.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/opensuse/krb5\u0026distro=openSUSE%20Leap%2016.0","source":"openSUSE-SU-2026:21238-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["1.22.2-4.1"],"introduced":["0"],"last_affected":[],"package":"krb5","purl":"pkg:rpm/opensuse/krb5\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:11177-1"}],"prev":{"headline":"IEI Integration Corp｜iRM-IEI Remote Management - Hard-coded Credentials","id":"CVE-2026-11849"},"products":["Red Hat Enterprise Linux 10","Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9","Red Hat Hardened Images","Red Hat OpenShift Container Platform 4"],"published":"2026-06-11","related":[],"sources":[{"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":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"partial"},"state":"PUBLISHED","updated":"2026-08-31","vendors":["Red Hat"]},"summary":"An integer underflow in MIT Kerberos allows heap out-of-bounds reads via malicious LDAP data, potentially causing information disclosure or crashes.","url":"https://insights.sbomify.com/CVE-2026-11850/"}