{"id":"CVE-2023-53800","summary":"ubi: Fix use-after-free when volume resizing failed","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nubi: Fix use-after-free when volume resizing failed\n\nThere is an use-after-free problem reported by KASAN:\n  ==================================================================\n  BUG: KASAN: use-after-free in ubi_eba_copy_table+0x11f/0x1c0 [ubi]\n  Read of size 8 at addr ffff888101eec008 by task ubirsvol/4735\n\n  CPU: 2 PID: 4735 Comm: ubirsvol\n  Not tainted 6.1.0-rc1-00003-g84fa3304a7fc-dirty #14\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),\n  BIOS 1.14.0-1.fc33 04/01/2014\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x34/0x44\n   print_report+0x171/0x472\n   kasan_report+0xad/0x130\n   ubi_eba_copy_table+0x11f/0x1c0 [ubi]\n   ubi_resize_volume+0x4f9/0xbc0 [ubi]\n   ubi_cdev_ioctl+0x701/0x1850 [ubi]\n   __x64_sys_ioctl+0x11d/0x170\n   do_syscall_64+0x35/0x80\n   entry_SYSCALL_64_after_hwframe+0x46/0xb0\n   \u003c/TASK\u003e\n\nWhen ubi_change_vtbl_record() returns an error in ubi_resize_volume(),\n\"new_eba_tbl\" will be freed on error handing path, but it is holded\nby \"vol-\u003eeba_tbl\" in ubi_eba_replace_table(). It means that the liftcycle\nof \"vol-\u003eeba_tbl\" and \"vol\" are different, so when resizing volume in\nnext time, it causing an use-after-free fault.\n\nFix it by not freeing \"new_eba_tbl\" after it replaced in\nubi_eba_replace_table(), while will be freed in next volume resizing.","modified":"2026-08-12T03:51:31.700099951Z","published":"2025-12-09T00:00:56.507Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53800.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/35f8d4064e54c18424db2997059d4c0b1d13d093"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3d6378f7056ac7350338f941001162a8f660853c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/53818746e549e61841428892a8d94344494be797"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9af31d6ec1a4be4caab2550096c6bd2ba8fba472"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9c8be1f165baee53b5a36ea0b3c9281d403a1d0b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b0c951742348d216f094d16ed4f70ae73db881c0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bf795ebbb9995e2fe7945de71177f01c2f1215dc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bf9875aa7f7d624a8c084425b14bf7e5907ebc30"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53800.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53800"},{"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":"801c135ce73d5df1caf3eca35b66a10824ae0707"},{"fixed":"bf9875aa7f7d624a8c084425b14bf7e5907ebc30"},{"fixed":"bf795ebbb9995e2fe7945de71177f01c2f1215dc"},{"fixed":"9c8be1f165baee53b5a36ea0b3c9281d403a1d0b"},{"fixed":"35f8d4064e54c18424db2997059d4c0b1d13d093"},{"fixed":"53818746e549e61841428892a8d94344494be797"},{"fixed":"b0c951742348d216f094d16ed4f70ae73db881c0"},{"fixed":"3d6378f7056ac7350338f941001162a8f660853c"},{"fixed":"9af31d6ec1a4be4caab2550096c6bd2ba8fba472"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53800.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.22"},{"fixed":"4.14.308"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"4.19.276"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.235"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.173"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.100"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.18"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53800.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"}]}