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Review reviewCritical

CVE-2023-54257

Linux

In the Linux kernel, the following vulnerability has been resolved: net: macb: fix a memory corruption in extended buffer descriptor mode For quite some time we were chasing a bug which looked like a sudden permanent failure of networking and mmc on some of our devices. The bug was very sensitive to any software changes and even more to any kernel debug options. Finally we got a setup where the problem was reproducible with CONFIG_DMA_API_DEBUG=y and it revealed the issue with the rx dma: [ 16.992082] ------------[ cut here ]------------ [ 16.996779] DMA-API: macb ff0b0000.ethernet: device...

CVSS
9.8
EPSS
0.53%
42.1% percentile
CISA KEV
Not listed
Published
2025.12.30
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.53%
Technical severityCVSS 9.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: net: macb: fix a memory corruption in extended buffer descriptor mode For quite some time we were chasing a bug which looked like a sudden permanent failure of networking and mmc on some of our devices. The bug was very sensitive to any software changes and even more to any kernel debug options. Finally we got a setup where the problem was reproducible with CONFIG_DMA_API_DEBUG=y and it revealed the issue with the rx dma: [ 16.992082] ------------[ cut here ]------------ [ 16.996779] DMA-API: macb ff0b0000.ethernet: device...

Affected product and versions

Product
Linux
Affected versions
>= 7b4296148066f19b5960127ba579e358df501c22 < dd7a49a3eaf723a01b2fdf153f98450a82b0b0fe, >= 7b4296148066f19b5960127ba579e358df501c22 < 82e626af24683e01211abe66cec27a387f8f17c9, >= 7b4296148066f19b5960127ba579e358df501c22 < 7169d1638824c4bf7e0fe0baad381ddec861fa70, >= 7b4296148066f19b5960127ba579e358df501c22 < 1bec9da233f779e7b6954ee07ad7e6d8f2a4dd83, >= 7b4296148066f19b5960127ba579e358df501c22 < 7ccc58a1a75601c936069d4a0741940623990ade, >= 7b4296148066f19b5960127ba579e358df501c22 < 9412a9bf5952cdf5d0f736cc1e8c68fd366c2d47, >= 7b4296148066f19b5960127ba579e358df501c22 < 5dcf3a6843d0d7cc76960fbe8511d425f217744c, >= 7b4296148066f19b5960127ba579e358df501c22 < e8b74453555872851bdd7ea43a7c0ec39659834f, >= 4.13
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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Not available