{"id":"CVE-2026-110659","aliases":["AZL-108399","EUVD-2026-101132","GHSA-78jh-26cf-3958"],"status":"published","title":"ELFIO through 3.12 NULL Pointer Dereference via relocation_section_accessor get_entry","description":"ELFIO through 3.12 contains a NULL pointer dereference vulnerability in relocation_section_accessor get_entry() that allows attackers to crash applications via an unvalidated sh_link index. Attackers can supply a crafted ELF file whose SHT_REL or SHT_RELA section has a dangling sh_link, causing find_hash_section() to dereference null and deny service.","severity":{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00179,"percentile":0.07517,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2026-10-14T15:01:25Z","modified":"2026-11-05T14:16:58Z","affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"mstflint","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"4.28.0-3"}]}]}],"products":[{"vendor":"serge1","product":"elfio"}],"references":[{"url":"https://hackmd.io/@haind-pwn/elfio-relocation-get-entry-null-deref","tags":["technical-description","exploit","evidence"]},{"url":"https://github.com/serge1/ELFIO/blob/8ae6cec5d60495822ecd57d736f66149da9b1830/elfio/elfio_relocation.hpp#L142","tags":["technical-description","article"]},{"url":"https://github.com/serge1/ELFIO","tags":["product","package"]},{"url":"https://www.vulncheck.com/advisories/elfio-through-3.12-null-pointer-dereference-via-relocation-section-accessor-get-entry","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110659","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-78jh-26cf-3958"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110659.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-110659","title":"ELFIO through 3.12 NULL Pointer Dereference via relocation_section_accessor get_entry","description":"ELFIO through 3.12 contains a NULL pointer dereference vulnerability in relocation_section_accessor get_entry() that allows attackers to crash applications via an unvalidated sh_link index. Attackers can supply a crafted ELF file whose SHT_REL or SHT_RELA section has a dangling sh_link, causing find_hash_section() to dereference null and deny service.","status":"published","published":"2026-10-14T15:01:25.207Z","modified":"2026-10-20T01:27:15.189Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T13:34:26.24368Z"}],"euvd":[{"id":"EUVD-2026-101132","description":"ELFIO through 3.12 contains a NULL pointer dereference vulnerability in relocation_section_accessor get_entry() that allows attackers to crash applications via an unvalidated sh_link index. Attackers can supply a crafted ELF file whose SHT_REL or SHT_RELA section has a dangling sh_link, causing find_hash_section() to dereference null and deny service.","status":"published","published":"2026-10-14T15:01:25Z","modified":"2026-10-20T01:27:15Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:59:44.89597Z"}],"ghsa":[{"id":"GHSA-78jh-26cf-3958","title":"ELFIO through 3.12 contains a NULL pointer dereference vulnerability in...","description":"ELFIO through 3.12 contains a NULL pointer dereference vulnerability in relocation_section_accessor get_entry() that allows attackers to crash applications via an unvalidated sh_link index. Attackers can supply a crafted ELF file whose SHT_REL or SHT_RELA section has a dangling sh_link, causing find_hash_section() to dereference null and deny service.","status":"published","published":"2026-10-14T18:32:17Z","modified":"2026-10-14T18:32:22Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T15:13:26.734116Z"}],"nvd":[{"id":"CVE-2026-110659","description":"ELFIO through 3.12 contains a NULL pointer dereference vulnerability in relocation_section_accessor get_entry() that allows attackers to crash applications via an unvalidated sh_link index. Attackers can supply a crafted ELF file whose SHT_REL or SHT_RELA section has a dangling sh_link, causing find_hash_section() to dereference null and deny service.","status":"published","published":"2026-10-14T16:17:42.78Z","modified":"2026-10-20T02:17:10.363Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:12:58.99337Z"}],"osv":[{"id":"CVE-2026-110659","title":"ELFIO through 3.12 NULL Pointer Dereference via relocation_section_accessor get_entry","description":"ELFIO through 3.12 contains a NULL pointer dereference vulnerability in relocation_section_accessor get_entry() that allows attackers to crash applications via an unvalidated sh_link index. Attackers can supply a crafted ELF file whose SHT_REL or SHT_RELA section has a dangling sh_link, causing find_hash_section() to dereference null and deny service.","status":"published","published":"2026-10-14T15:01:25.207Z","modified":"2026-10-28T02:30:28.794265513Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T15:44:55.61515Z"},{"id":"AZL-108399","title":"CVE-2026-110659 affecting package mstflint 4.28.0-3","description":"ELFIO through 3.12 contains a NULL pointer dereference vulnerability in relocation_section_accessor get_entry() that allows attackers to crash applications via an unvalidated sh_link index. Attackers can supply a crafted ELF file whose SHT_REL or SHT_RELA section has a dangling sh_link, causing find_hash_section() to dereference null and deny service.","status":"published","published":"2026-10-14T16:17:42Z","modified":"2026-11-05T14:16:58.446720132Z","updated_at":"2026-11-05T16:41:18.199293Z"}]}}