{"id":"CVE-2026-72194","summary":"fs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow","details":"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 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-\u003enodes 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.","modified":"2026-08-18T03:56:38.116580466Z","published":"2026-08-15T05:53:54.125Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72194.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1ebd684b8f627f75bc3e03f8b2ad8400fd1f02cd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/65357a81f64cb3fbe13b4b937586755e4b3a072f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/78612f478f9fadcec4f9b3b089970da67ffb47e9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/908c9243ba309997b73cbda3e4c563d0fb345ee9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/96fb64f9da86fd2dbd78fbe9d9e41ae27e12ce34"},{"type":"WEB","url":"https://git.kernel.org/stable/c/99031d4f63c785d2a985b6a4c64c4256f7117052"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fdf50c788e0991e42a187ff75479a0df7fb752f1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72194.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72194"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"82cae269cfa953032fbb8980a7d554d60fb00b17"},{"fixed":"99031d4f63c785d2a985b6a4c64c4256f7117052"},{"fixed":"65357a81f64cb3fbe13b4b937586755e4b3a072f"},{"fixed":"96fb64f9da86fd2dbd78fbe9d9e41ae27e12ce34"},{"fixed":"78612f478f9fadcec4f9b3b089970da67ffb47e9"},{"fixed":"908c9243ba309997b73cbda3e4c563d0fb345ee9"},{"fixed":"fdf50c788e0991e42a187ff75479a0df7fb752f1"},{"fixed":"1ebd684b8f627f75bc3e03f8b2ad8400fd1f02cd"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72194.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.15.0"},{"fixed":"5.15.212"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.178"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.145"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.97"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72194.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}