{"id":"CVE-2026-72194","title":"fs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow\n\nindx_find_buffer() recursively descends the B+ tree index with no depth\nlimit.  A crafted NTFS …","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < 99031d4f63c785d2a985b6a4c64c4256f7117052","Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < 65357a81f64cb3fbe13b4b937586755e4b3a072f","Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < 96fb64f9da86fd2dbd78fbe9d9e41ae27e12ce34","Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < 78612f478f9fadcec4f9b3b089970da67ffb47e9","Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < 908c9243ba309997b73cbda3e4c563d0fb345ee9","Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < fdf50c788e0991e42a187ff75479a0df7fb752f1","Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < 1ebd684b8f627f75bc3e03f8b2ad8400fd1f02cd","Linux 5.15"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-10-16T18:43:35.223042Z"},"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T18:45:01.099Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72194","references":[{"url":"https://git.kernel.org/stable/c/99031d4f63c785d2a985b6a4c64c4256f7117052"},{"url":"https://git.kernel.org/stable/c/65357a81f64cb3fbe13b4b937586755e4b3a072f"},{"url":"https://git.kernel.org/stable/c/96fb64f9da86fd2dbd78fbe9d9e41ae27e12ce34"},{"url":"https://git.kernel.org/stable/c/78612f478f9fadcec4f9b3b089970da67ffb47e9"},{"url":"https://git.kernel.org/stable/c/908c9243ba309997b73cbda3e4c563d0fb345ee9"},{"url":"https://git.kernel.org/stable/c/fdf50c788e0991e42a187ff75479a0df7fb752f1"},{"url":"https://git.kernel.org/stable/c/1ebd684b8f627f75bc3e03f8b2ad8400fd1f02cd"}],"tags":["cve.org"],"epss":0.00798,"epssPercentile":0.55661,"ingestedAt":"2026-10-16T19:46:24.423Z","slug":"CVE-2026-72194","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow\n\nindx_find_buffer() recursively descends the B+ tree index with no depth\nlimit.  A crafted NTFS image with circular index node references causes\nunbounded recursion, overflowing the kernel stack and panicking the\nsystem.\n\nThis is reachable by mounting a malicious NTFS filesystem (e.g. from a\nUSB drive via desktop automount) and deleting a file whose index entry\ntriggers the rebalancing fallback path in indx_delete_entry().\n\nAdd a depth parameter and bail out with -EINVAL when it reaches the\nfnd->nodes array bound, matching the constraint already enforced by\nfnd_push() in indx_find().\n\nThe related function indx_find() was previously patched for a similar\ninfinite-loop issue (commit 1732053c8a6b), but indx_find_buffer() was\nmissed.\n\n## Affected\n\n- `Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < 99031d4f63c785d2a985b6a4c64c4256f7117052`\n- `Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < 65357a81f64cb3fbe13b4b937586755e4b3a072f`\n- `Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < 96fb64f9da86fd2dbd78fbe9d9e41ae27e12ce34`\n- `Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < 78612f478f9fadcec4f9b3b089970da67ffb47e9`\n- `Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < 908c9243ba309997b73cbda3e4c563d0fb345ee9`\n- `Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < fdf50c788e0991e42a187ff75479a0df7fb752f1`\n- `Linux >= 82cae269cfa953032fbb8980a7d554d60fb00b17 < 1ebd684b8f627f75bc3e03f8b2ad8400fd1f02cd`\n- `Linux 5.15`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}