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Review reviewHigh

CVE-2023-53800

Linux

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+0...

CVSS
7.8
EPSS
0.12%
2.54% percentile
CISA KEV
Not listed
Published
2025.12.09
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.12%
Technical severityCVSS 7.8

Vulnerability overview

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+0...

Affected product and versions

Product
Linux
Affected versions
>= 801c135ce73d5df1caf3eca35b66a10824ae0707 < bf9875aa7f7d624a8c084425b14bf7e5907ebc30, >= 801c135ce73d5df1caf3eca35b66a10824ae0707 < bf795ebbb9995e2fe7945de71177f01c2f1215dc, >= 801c135ce73d5df1caf3eca35b66a10824ae0707 < 9c8be1f165baee53b5a36ea0b3c9281d403a1d0b, >= 801c135ce73d5df1caf3eca35b66a10824ae0707 < 35f8d4064e54c18424db2997059d4c0b1d13d093, >= 801c135ce73d5df1caf3eca35b66a10824ae0707 < 53818746e549e61841428892a8d94344494be797, >= 801c135ce73d5df1caf3eca35b66a10824ae0707 < b0c951742348d216f094d16ed4f70ae73db881c0, >= 801c135ce73d5df1caf3eca35b66a10824ae0707 < 3d6378f7056ac7350338f941001162a8f660853c, >= 801c135ce73d5df1caf3eca35b66a10824ae0707 < 9af31d6ec1a4be4caab2550096c6bd2ba8fba472, >= 2.6.22
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available