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Review reviewHigh

CVE-2023-53718

Linux

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Do not swap cpu_buffer during resize process When ring_buffer_swap_cpu was called during resize process, the cpu buffer was swapped in the middle, resulting in incorrect state. Continuing to run in the wrong state will result in oops. This issue can be easily reproduced using the following two scripts: /tmp # cat test1.sh //#! /bin/sh for i in `seq 0 100000` do echo 2000 > /sys/kernel/debug/tracing/buffer_size_kb sleep 0.5 echo 5000 > /sys/kernel/debug/tracing/buffer_size_kb sleep 0.5 done /tmp # cat test2.sh /...

CVSS
7.8
EPSS
0.14%
4.12% percentile
CISA KEV
Not listed
Published
2025.10.22
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.14%
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Do not swap cpu_buffer during resize process When ring_buffer_swap_cpu was called during resize process, the cpu buffer was swapped in the middle, resulting in incorrect state. Continuing to run in the wrong state will result in oops. This issue can be easily reproduced using the following two scripts: /tmp # cat test1.sh //#! /bin/sh for i in `seq 0 100000` do echo 2000 > /sys/kernel/debug/tracing/buffer_size_kb sleep 0.5 echo 5000 > /sys/kernel/debug/tracing/buffer_size_kb sleep 0.5 done /tmp # cat test2.sh /...

Affected product and versions

Product
Linux
Affected versions
>= 83f40318dab00e3298a1f6d0b12ac025e84e478d < 66a3b2a121386702663065d5c9e5a33c03d3f4a2, >= 83f40318dab00e3298a1f6d0b12ac025e84e478d < 49b830d75f03d5dd41146d10e4d3e2a8211c4b94, >= 83f40318dab00e3298a1f6d0b12ac025e84e478d < 128c06a34cfe55212632533a706b050d54552741, >= 83f40318dab00e3298a1f6d0b12ac025e84e478d < 02e52d7daaa3f0f48819f198092cf4871065bbf7, >= 83f40318dab00e3298a1f6d0b12ac025e84e478d < 8a96c0288d0737ad77882024974c075345c72011, >= 3.5
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