Answer in brief
CVE-2023-53800 records a High severity (CVSS 7.8) vulnerability in ubi: Fix use-after-free when volume resizing failed. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2023-53800 records a High severity (CVSS 7.8) vulnerability in ubi: Fix use-after-free when volume resizing failed. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=801c135ce73d5df1caf3eca35b66a10824ae0707 <bf9875aa7f7d624a8c084425b14bf7e5907ebc30 || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <bf795ebbb9995e2fe7945de71177f01c2f1215dc || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <9c8be1f165baee53b5a36ea0b3c9281d403a1d0b || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <35f8d4064e54c18424db2997059d4c0b1d13d093 || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <53818746e549e61841428892a8d94344494be797 || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <b0c951742348d216f094d16ed4f70ae73db881c0 || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <3d6378f7056ac7350338f941001162a8f660853c || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <9af31d6ec1a4be4caab2550096c6bd2ba8fba472 | bf9875aa7f7d624a8c084425b14bf7e5907ebc30, bf795ebbb9995e2fe7945de71177f01c2f1215dc, 9c8be1f165baee53b5a36ea0b3c9281d403a1d0b, 35f8d4064e54c18424db2997059d4c0b1d13d093, 53818746e549e61841428892a8d94344494be797, b0c951742348d216f094d16ed4f70ae73db881c0, 3d6378f7056ac7350338f941001162a8f660853c, 9af31d6ec1a4be4caab2550096c6bd2ba8fba472 |
| Linux/Linuxgeneric | 2.6.22 | Not reported |
Published upstream
Dec 9, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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: <TASK> 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 </TASK> 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.
Quoted source text, attributed separately from HOL analysis.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=801c135ce73d5df1caf3eca35b66a10824ae0707 <bf9875aa7f7d624a8c084425b14bf7e5907ebc30 || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <bf795ebbb9995e2fe7945de71177f01c2f1215dc || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <9c8be1f165baee53b5a36ea0b3c9281d403a1d0b || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <35f8d4064e54c18424db2997059d4c0b1d13d093 || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <53818746e549e61841428892a8d94344494be797 || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <b0c951742348d216f094d16ed4f70ae73db881c0 || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <3d6378f7056ac7350338f941001162a8f660853c || >=801c135ce73d5df1caf3eca35b66a10824ae0707 <9af31d6ec1a4be4caab2550096c6bd2ba8fba472 | bf9875aa7f7d624a8c084425b14bf7e5907ebc30, bf795ebbb9995e2fe7945de71177f01c2f1215dc, 9c8be1f165baee53b5a36ea0b3c9281d403a1d0b, 35f8d4064e54c18424db2997059d4c0b1d13d093, 53818746e549e61841428892a8d94344494be797, b0c951742348d216f094d16ed4f70ae73db881c0, 3d6378f7056ac7350338f941001162a8f660853c, 9af31d6ec1a4be4caab2550096c6bd2ba8fba472 |
| Linux/Linuxgeneric | 2.6.22 | Not reported |
Published upstream
Dec 9, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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: <TASK> 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 </TASK> 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.
Quoted source text, attributed separately from HOL analysis.