{"id":"DEBIAN-CVE-2023-52852","details":"In the Linux kernel, the following vulnerability has been resolved:  f2fs: compress: fix to avoid use-after-free on dic  Call trace:  __memcpy+0x128/0x250  f2fs_read_multi_pages+0x940/0xf7c  f2fs_mpage_readpages+0x5a8/0x624  f2fs_readahead+0x5c/0x110  page_cache_ra_unbounded+0x1b8/0x590  do_sync_mmap_readahead+0x1dc/0x2e4  filemap_fault+0x254/0xa8c  f2fs_filemap_fault+0x2c/0x104  __do_fault+0x7c/0x238  do_handle_mm_fault+0x11bc/0x2d14  do_mem_abort+0x3a8/0x1004  el0_da+0x3c/0xa0  el0t_64_sync_handler+0xc4/0xec  el0t_64_sync+0x1b4/0x1b8  In f2fs_read_multi_pages(), once f2fs_decompress_cluster() was called if we hit cached page in compress_inode's cache, dic may be released, it needs break the loop rather than continuing it, in order to avoid accessing invalid dic pointer.","modified":"2026-09-15T09:02:40.121290677Z","published":"2024-05-21T16:15:22.227Z","upstream":["CVE-2023-52852"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-52852"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.64-1"}]}],"versions":["6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52852.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.8-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52852.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.8-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-52852.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:H/I:H/A:H"}]}