{"id":"CVE-2023-53144","summary":"erofs: fix wrong kunmap when using LZMA on HIGHMEM platforms","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix wrong kunmap when using LZMA on HIGHMEM platforms\n\nAs the call trace shown, the root cause is kunmap incorrect pages:\n\n BUG: kernel NULL pointer dereference, address: 00000000\n CPU: 1 PID: 40 Comm: kworker/u5:0 Not tainted 6.2.0-rc5 #4\n Workqueue: erofs_worker z_erofs_decompressqueue_work\n EIP: z_erofs_lzma_decompress+0x34b/0x8ac\n  z_erofs_decompress+0x12/0x14\n  z_erofs_decompress_queue+0x7e7/0xb1c\n  z_erofs_decompressqueue_work+0x32/0x60\n  process_one_work+0x24b/0x4d8\n  ? process_one_work+0x1a4/0x4d8\n  worker_thread+0x14c/0x3fc\n  kthread+0xe6/0x10c\n  ? rescuer_thread+0x358/0x358\n  ? kthread_complete_and_exit+0x18/0x18\n  ret_from_fork+0x1c/0x28\n ---[ end trace 0000000000000000 ]---\n\nThe bug is trivial and should be fixed now.  It has no impact on\n!HIGHMEM platforms.","modified":"2026-04-02T09:43:41.992408Z","published":"2025-05-02T15:56:14.417Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53144.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/28aea8ae6cf212a5bf3ed962b27921e2029ad754"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8f121dfb15f7b4ab345992ce96003eb63fd608f4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fa4056781ac067b5946c6811459e1a36842047fd"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53144.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53144"},{"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":"622ceaddb7649ca328832f50ba1400af778d75fa"},{"fixed":"fa4056781ac067b5946c6811459e1a36842047fd"},{"fixed":"28aea8ae6cf212a5bf3ed962b27921e2029ad754"},{"fixed":"8f121dfb15f7b4ab345992ce96003eb63fd608f4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53144.json"}}],"schema_version":"1.7.5"}