{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-6238 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-6238 is a medium-severity memory corruption vulnerability in Gnu Glibc, published on 28 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-6238 and fix it if it is affected.\n\nWhat it is: CVE-2026-6238 is a medium-severity memory corruption vulnerability in Gnu Glibc, published on 28 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-6238 in the wild and no public exploit code.\n\nAffected product: Gnu Glibc. 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-2026-6238/ (Markdown: https://insights.sbomify.com/CVE-2026-6238/index.md)","id":"CVE-2026-6238","markdown":"https://insights.sbomify.com/CVE-2026-6238/index.md","name":"CVE-2026-6238","record":{"aliases":["AZL-85004","BELL-CVE-2026-6238","CLSA-2026-1780916496","DEBIAN-CVE-2026-6238","ECHO-916f-8705-1b52","GHSA-h8wx-jcwq-g3cp","MINI-9482-2jh4-39pv","MINI-9p64-m6c8-jxc2","MINI-f764-5hrx-hg8v","ROOT-OS-DEBIAN-11-CVE-2026-6238","ROOT-OS-DEBIAN-12-CVE-2026-6238","ROOT-OS-DEBIAN-13-CVE-2026-6238","UBUNTU-CVE-2026-6238"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"GNU C Library","requires_auth":"none","summary":"An attacker can cause a crash or read uninitialized memory in applications using deprecated glibc DNS debugging functions via a crafted DNS response.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"glibc","cpe":[{"product":"glibc","vendor":"gnu"}],"cvss":{"score":6.5,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-126","name":"Buffer Over-read"}],"description":"The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.0.1 to version 2.43 fail to validate the RDATA content against the RDATA length in a DNS response when processing A6, CERT, LOC, TKEY or TSIG records, which may allow an attacker to craft a DNS response, causing a target application to crash or read uninitialized memory.\n\nThese functions are for application debugging only and hence not in the path of code executed by the DNS resolver.  Further, they have been deprecated since version 2.34 and should not be used by any new applications.  Applications should consider porting away from these interfaces since they may be removed in future versions.","ecosystems":[],"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":"Buffer overread in ns_printrrf with corrupted RDATA field","id":"CVE-2026-6238","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"gnu:glibc","products":["gnu:glibc"],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Authenticated Stack-based Buffer Overflow in ONVIF CreateUsers Service in TP-Link Tao C520WS","id":"CVE-2026-6239"},"packages":[],"prev":{"headline":"Quick Table \u003c= 1.0.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'style' Shortcode Attribute","id":"CVE-2026-6237"},"products":["glibc"],"published":"2026-04-28","related":[{"cvss_score":9.8,"headline":"scanf %mc off-by-one heap buffer overflow","id":"CVE-2026-5450","kev_date_added":null,"published":"2026-04-20"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2023-25139","kev_date_added":null,"published":"2023-02-03"},{"cvss_score":9.8,"headline":"Other in n/a","id":"CVE-1999-0199","kev_date_added":null,"published":"2020-10-06"},{"cvss_score":9.8,"headline":"Security feature bypass in glibc","id":"CVE-2019-1010022","kev_date_added":null,"published":"2019-07-15"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2005-3590","kev_date_added":null,"published":"2019-04-10"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2017-18269","kev_date_added":null,"published":"2018-05-18"},{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2018-11236","kev_date_added":null,"published":"2018-05-18"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-15","vendors":["The GNU C Library"]},"summary":"An attacker can cause a crash or read uninitialized memory in applications using deprecated glibc DNS debugging functions via a crafted DNS response.","url":"https://insights.sbomify.com/CVE-2026-6238/"}