{"id":"DEBIAN-CVE-2024-46701","details":"In the Linux kernel, the following vulnerability has been resolved:  libfs: fix infinite directory reads for offset dir  After we switch tmpfs dir operations from simple_dir_operations to simple_offset_dir_operations, every rename happened will fill new dentry to dest dir's maple tree(&SHMEM_I(inode)-\u003edir_offsets-\u003emt) with a free key starting with octx-\u003enewx_offset, and then set newx_offset equals to free key + 1. This will lead to infinite readdir combine with rename happened at the same time, which fail generic/736 in xfstests(detail show as below).  1. create 5000 files(1 2 3...) under one dir 2. call readdir(man 3 readdir) once, and get one entry 3. rename(entry, \"TEMPFILE\"), then rename(\"TEMPFILE\", entry) 4. loop 2~3, until readdir return nothing or we loop too many    times(tmpfs break test with the second condition)  We choose the same logic what commit 9b378f6ad48cf (\"btrfs: fix infinite directory reads\") to fix it, record the last_index when we open dir, and do not emit the entry which index \u003e= last_index. The file-\u003eprivate_data now used in offset dir can use directly to do this, and we also update the last_index when we llseek the dir file.  [brauner: only update last_index after seek when offset is zero like Jan suggested]","modified":"2026-09-15T09:02:57.935256399Z","published":"2024-09-13T07:15:05.127Z","upstream":["CVE-2024-46701"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-46701"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.10.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-46701.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.10.7-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-46701.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}