{"id":"DEBIAN-CVE-2023-53144","details":"In the Linux kernel, the following vulnerability has been resolved:  erofs: fix wrong kunmap when using LZMA on HIGHMEM platforms  As the call trace shown, the root cause is kunmap incorrect pages:   BUG: kernel NULL pointer dereference, address: 00000000  CPU: 1 PID: 40 Comm: kworker/u5:0 Not tainted 6.2.0-rc5 #4  Workqueue: erofs_worker z_erofs_decompressqueue_work  EIP: z_erofs_lzma_decompress+0x34b/0x8ac   z_erofs_decompress+0x12/0x14   z_erofs_decompress_queue+0x7e7/0xb1c   z_erofs_decompressqueue_work+0x32/0x60   process_one_work+0x24b/0x4d8   ? process_one_work+0x1a4/0x4d8   worker_thread+0x14c/0x3fc   kthread+0xe6/0x10c   ? rescuer_thread+0x358/0x358   ? kthread_complete_and_exit+0x18/0x18   ret_from_fork+0x1c/0x28  ---[ end trace 0000000000000000 ]---  The bug is trivial and should be fixed now.  It has no impact on !HIGHMEM platforms.","modified":"2026-09-15T09:02:41.972836111Z","published":"2025-05-02T16:15:33.357Z","upstream":["CVE-2023-53144"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-53144"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53144.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53144.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.20-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53144.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"}]}