ubi: Fix use-after-free when volume resizing failed
In the Linux kernel, the following vulnerability has been resolved: ubi: Fix use-after-free when volume resizing failed There is an use-after-free problem reported by KASAN: ================================================================== BUG: KASAN: use-after-free in ubi_eba_copy_table+0x11f/0x1c0 [ubi] Read of size 8 at addr ffff888101eec008 by task ubirsvol/4735 CPU: 2 PID: 4735 Comm: ubirsvol Not tainted 6.1.0-rc1-00003-g84fa3304a7fc-dirty #14 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 04/01/2014 Call Trace: dump_stack_lvl+0x34/0x44 print_report+0x171/0x472 kasan_report+0xad/0x130 ubi_eba_copy_table+0x11f/0x1c0 [ubi] ubi_resize_volume+0x4f9/0xbc0 [ubi] ubi_cdev_ioctl+0x701/0x1850 [ubi] __x64_sys_ioctl+0x11d/0x170 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 When ubi_change_vtbl_record() returns an error in ubi_resize_volume(), "new_eba_tbl" will be freed on error handing path, but it is holded by "vol->eba_tbl" in ubi_eba_replace_table(). It means that the liftcycle of "vol->eba_tbl" and "vol" are different, so when resizing volume in next time, it causing an use-after-free fault. Fix it by not freeing "new_eba_tbl" after it replaced in ubi_eba_replace_table(), while will be freed in next volume resizing.
CVE-2023-53800
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2023-53800
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
"lessThan": "bf9875aa7f7d624a8c084425b14bf7e5907ebc30",
"versionType": "git"
},
{
"status": "affected",
"version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
"lessThan": "bf795ebbb9995e2fe7945de71177f01c2f1215dc",
"versionType": "git"
},
{
"status": "affected",
"version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
"lessThan": "9c8be1f165baee53b5a36ea0b3c9281d403a1d0b",
"versionType": "git"
},
{
"status": "affected",
"version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
"lessThan": "35f8d4064e54c18424db2997059d4c0b1d13d093",
"versionType": "git"
},
{
"status": "affected",
"version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
"lessThan": "53818746e549e61841428892a8d94344494be797",
"versionType": "git"
},
{
"status": "affected",
"version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
"lessThan": "b0c951742348d216f094d16ed4f70ae73db881c0",
"versionType": "git"
},
{
"status": "affected",
"version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
"lessThan": "3d6378f7056ac7350338f941001162a8f660853c",
"versionType": "git"
},
{
"status": "affected",
"version": "801c135ce73d5df1caf3eca35b66a10824ae0707",
"lessThan": "9af31d6ec1a4be4caab2550096c6bd2ba8fba472",
"versionType": "git"
}
],
"programFiles": [
"drivers/mtd/ubi/vmt.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.22"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.22",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.14.308",
"versionType": "semver",
"lessThanOrEqual": "4.14.*"
},
{
"status": "unaffected",
"version": "4.19.276",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.235",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.173",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.100",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.18",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.2.5",
"versionType": "semver",
"lessThanOrEqual": "6.2.*"
},
{
"status": "unaffected",
"version": "6.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/mtd/ubi/vmt.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2023-53800
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30321 · Revision 1
- Added to Heist Feed
- Publisher date