{"id":"CVE-2023-53800","revision":"0831e41cdd984e42bed9ca69e2235849","records":[{"revision":"0831e41cdd984e42bed9ca69e2235849","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-53800","aliases":[],"title":"ubi: Fix use-after-free when volume resizing failed","description":"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 \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 \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->eba_tbl\" in ubi_eba_replace_table(). It means that the liftcycle\nof \"vol->eba_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.","state":0,"publishedAt":"2025-12-09T00:00:56.507+00:00","modifiedAt":"2026-10-15T21:41:36.295+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/mtd/ubi/vmt.c\"\n ],\n \"versions\": [\n {\n \"version\": \"801c135ce73d5df1caf3eca35b66a10824ae0707\",\n \"lessThan\": \"bf9875aa7f7d624a8c084425b14bf7e5907ebc30\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"801c135ce73d5df1caf3eca35b66a10824ae0707\",\n \"lessThan\": \"bf795ebbb9995e2fe7945de71177f01c2f1215dc\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"801c135ce73d5df1caf3eca35b66a10824ae0707\",\n \"lessThan\": \"9c8be1f165baee53b5a36ea0b3c9281d403a1d0b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"801c135ce73d5df1caf3eca35b66a10824ae0707\",\n \"lessThan\": \"35f8d4064e54c18424db2997059d4c0b1d13d093\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"801c135ce73d5df1caf3eca35b66a10824ae0707\",\n \"lessThan\": \"53818746e549e61841428892a8d94344494be797\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"801c135ce73d5df1caf3eca35b66a10824ae0707\",\n \"lessThan\": \"b0c951742348d216f094d16ed4f70ae73db881c0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"801c135ce73d5df1caf3eca35b66a10824ae0707\",\n \"lessThan\": \"3d6378f7056ac7350338f941001162a8f660853c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"801c135ce73d5df1caf3eca35b66a10824ae0707\",\n \"lessThan\": \"9af31d6ec1a4be4caab2550096c6bd2ba8fba472\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"drivers/mtd/ubi/vmt.c\"\n ],\n \"versions\": [\n {\n \"version\": \"2.6.22\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"2.6.22\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.14.308\",\n \"lessThanOrEqual\": \"4.14.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.276\",\n \"lessThanOrEqual\": \"4.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.235\",\n \"lessThanOrEqual\": \"5.4.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.173\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.100\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.18\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.2.5\",\n \"lessThanOrEqual\": \"6.2.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.3\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/bf9875aa7f7d624a8c084425b14bf7e5907ebc30","https://git.kernel.org/stable/c/bf795ebbb9995e2fe7945de71177f01c2f1215dc","https://git.kernel.org/stable/c/9c8be1f165baee53b5a36ea0b3c9281d403a1d0b","https://git.kernel.org/stable/c/35f8d4064e54c18424db2997059d4c0b1d13d093","https://git.kernel.org/stable/c/53818746e549e61841428892a8d94344494be797","https://git.kernel.org/stable/c/b0c951742348d216f094d16ed4f70ae73db881c0","https://git.kernel.org/stable/c/3d6378f7056ac7350338f941001162a8f660853c","https://git.kernel.org/stable/c/9af31d6ec1a4be4caab2550096c6bd2ba8fba472"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-53800","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-53800","identifiers":["CVE-2023-53800"]},"retained":false,"historicalAffected":[]}],"coverage":[]}