CVE-2023-54257

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2025-12-30. the CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 driver tries to free DMA memory it has not allocated [device address=0x0000000875e3e244] [size=1536 bytes] [ 17.011049] WARNING: CPU: 0 PID: 85 at kernel/dma/debug.c:1011 check_unmap+0x6a0/0x900 [ 17.018977] Modules linked in: xxxxx [ 17.038823] CPU: 0 PID: 85 Comm: irq/55-8000f000 Not tainted 5.4.0 #28 [ 17.045345] Hardware name: xxxxx [ 17.049528] pstate: 60000005 (nZCv daif -PAN -UAO) [ 17.054322] pc : check_unmap+0x6a0/0x900 [ 17.058243] lr : check_unmap+0x6a0/0x900 [ 17.062163] sp : ffffffc010003c40 [ 17.065470] x29: ffffffc010003c40 x28: 000000004000c03c [ 17.070783] x27: ffffffc010da7048 x26: ffffff8878e38800 [ 17.076095] x25: ffffff8879d22810 x24: ffffffc010003cc8 [ 17.081407] x23: 0000000000000000 x22: ffffffc010a08750 [ 17.086719] x21: ffffff8878e3c7c0 x20: ffffffc010acb000 [ 17.092032] x19: 0000000875e3e244 x18: 0000000000000010 [ 17.097343] x17: 0000000000000000 x16: 0000000000000000 [ 17.102647] x15: ffffff8879e4a988 x14: 0720072007200720 [ 17.107959] x13: 0720072007200720 x12: 0720072007200720 [ 17.113261] x11: 0720072007200720 x10: 0720072007200720 [ 17.118565] x9 : 0720072007200720 x8 : 000000000000022d [ 17.123869] x7 : 0000000000000015 x6 : 0000000000000098 [ 17.129173] x5 : 0000000000000000 x4 : 0000000000000000 [ 17.134475] x3 : 00000000ffffffff x2 : ffffffc010a1d370 [ 17.139778] x1 : b420c9d75d27bb00 x0 : 0000000000000000 [ 17.145082] Call trace: [ 17.147524] check_unmap+0x6a0/0x900 [ 17.151091] debug_dma_unmap_page+0x88/0x90 [ 17.155266] gem_rx+0x114/0x2f0 [ 17.158396] macb_poll+0x58/0x100 [ 17.161705] net_rx_action+0x118/0x400 [ 17.165445] __do_softirq+0x138/0x36c [ 17.169100] irq_exit+0x98/0xc0 [ 17.172234] __handle_domain_irq+0x64/0xc0 [ 17.176320] gic_handle_irq+0x5c/0xc0 [ 17.179974] el1_irq+0xb8/0x140 [ 17.183109] xiic_process+0x5c/0xe30 [ 17.186677] irq_thread_fn+0x28/0x90 [ 17.190244] irq_thread+0x208/0x2a0 [ 17.193724] kthread+0x130/0x140 [ 17.196945] ret_from_fork+0x10/0x20 [ 17.200510] ---[ end trace 7240980785f81d6f ]---

[ 237.021490] ------------[ cut here ]------------ [ 237.026129] DMA-API: exceeded 7 overlapping mappings of cacheline 0x0000000021d79e7b [ 237.033886] WARNING: CPU: 0 PID: 0 at kernel/dma/debug.c:499 add_dma_entry+0x214/0x240 [ 237.041802] Modules linked in: xxxxx [ 237.061637] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 5.4.0 #28 [ 237.068941] Hardware name: xxxxx [ 237.073116] pstate: 80000085 (Nzcv daIf -PAN -UAO) [ 237.077900] pc : add_dma_entry+0x214/0x240 [ 237.081986] lr : add_dma_entry+0x214/0x240 [ 237.086072] sp : ffffffc010003c30 [ 237.089379] x29: ffffffc010003c30 x28: ffffff8878a0be00 [ 237.094683] x27: 0000000000000180 x26: ffffff8878e387c0 [ 237.099987] x25: 0000000000000002 x24: 0000000000000000 [ 237.105290] x23: 000000000000003b x22: ffffffc010a0fa00 [ 237.110594] x21: 0000000021d79e7b x20: ffffffc010abe600 [ 237.115897] x19: 00000000ffffffef x18: 0000000000000010 [ 237.121201] x17: 0000000000000000 x16: 0000000000000000 [ 237.126504] x15: ffffffc010a0fdc8 x14: 0720072007200720 [ 237.131807] x13: 0720072007200720 x12: 0720072007200720 [ 237.137111] x11: 0720072007200720 x10: 0720072007200720 [ 237.142415] x9 : 0720072007200720 x8 : 0000000000000259 [ 237.147718] x7 : 0000000000000001 x6 : 0000000000000000 [ 237.15302 ---truncated---

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

December 30, 2025

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Sep 16, 2026
No patch confirmed yet.
generic

net: macb: fix a memory corruption in extended buffer descriptor mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e8b74453555872851bdd7ea43a7c0ec39659834f
generic

net: macb: fix a memory corruption in extended buffer descriptor mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5dcf3a6843d0d7cc76960fbe8511d425f217744c
generic

net: macb: fix a memory corruption in extended buffer descriptor mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9412a9bf5952cdf5d0f736cc1e8c68fd366c2d47
generic

net: macb: fix a memory corruption in extended buffer descriptor mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7ccc58a1a75601c936069d4a0741940623990ade
generic

net: macb: fix a memory corruption in extended buffer descriptor mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1bec9da233f779e7b6954ee07ad7e6d8f2a4dd83
generic

net: macb: fix a memory corruption in extended buffer descriptor mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7169d1638824c4bf7e0fe0baad381ddec861fa70
generic

net: macb: fix a memory corruption in extended buffer descriptor mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/82e626af24683e01211abe66cec27a387f8f17c9
generic

net: macb: fix a memory corruption in extended buffer descriptor mode - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dd7a49a3eaf723a01b2fdf153f98450a82b0b0fe

Vendor Advisories for CVE-2023-54257(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 4.14.313—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (25 versions)5.10.178-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—6.1.25-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.1.25-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.1.25-1—

Data Freshness Timeline

(refreshed 7× in last 7d / 28× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 191 total refreshes for this CVE.

  1. 2026-09-20 20:14 UTCEPSS rescore
  2. 2026-09-20 20:14 UTCEPSS rescore
  3. 2026-09-19 21:33 UTCOSV refresh
  4. 2026-09-18 19:26 UTCEPSS rescore
  5. 2026-09-16 14:06 UTCEPSS rescore
  6. 2026-09-16 05:11 UTCEPSS rescore
  7. 2026-09-16 05:11 UTCEPSS rescore
  8. 2026-09-15 03:08 UTCEPSS rescore
  9. 2026-09-13 16:45 UTCEPSS rescore
  10. 2026-09-12 14:58 UTCEPSS rescore
  11. 2026-09-11 14:51 UTCEPSS rescore
  12. 2026-09-11 09:34 UTCEPSS rescore
  13. 2026-09-08 21:58 UTCEPSS rescore
  14. 2026-09-07 15:59 UTCEPSS rescore
  15. 2026-09-06 13:46 UTCEPSS rescore
  16. 2026-09-05 15:26 UTCEPSS rescore
  17. 2026-09-04 13:58 UTCEPSS rescore
  18. 2026-09-04 05:04 UTCEPSS rescore
  19. 2026-09-02 14:10 UTCEPSS rescore
  20. 2026-09-01 13:52 UTCEPSS rescore
  21. 2026-09-01 04:36 UTCEPSS rescore
  22. 2026-09-01 01:04 UTCOSV refresh
  23. 2026-08-30 19:15 UTCEPSS rescore
  24. 2026-08-30 01:20 UTCEPSS rescore
  25. 2026-08-28 21:39 UTCEPSS rescore
Show 75 more
  1. 2026-08-27 14:23 UTCEPSS rescore
  2. 2026-08-26 14:44 UTCEPSS rescore
  3. 2026-08-25 13:47 UTCEPSS rescore
  4. 2026-08-23 00:17 UTCEPSS rescore
  5. 2026-08-23 00:17 UTCEPSS rescore
  6. 2026-08-21 23:47 UTCEPSS rescore
  7. 2026-08-20 22:53 UTCEPSS rescore
  8. 2026-08-19 17:02 UTCEPSS rescore
  9. 2026-08-18 13:46 UTCEPSS rescore
  10. 2026-08-16 14:54 UTCEPSS rescore
  11. 2026-08-16 02:12 UTCEPSS rescore
  12. 2026-08-15 01:28 UTCEPSS rescore
  13. 2026-08-15 01:04 UTCEG score recompute
  14. 2026-08-15 01:04 UTCGHSA enrichment
  15. 2026-08-13 21:58 UTCEPSS rescore
  16. 2026-08-12 13:49 UTCEPSS rescore
  17. 2026-08-11 13:40 UTCEPSS rescore
  18. 2026-08-10 23:58 UTCEPSS rescore
  19. 2026-08-09 22:21 UTCEG score recompute
  20. 2026-08-09 22:21 UTCGHSA enrichment
  21. 2026-08-09 13:44 UTCEPSS rescore
  22. 2026-08-08 16:35 UTCEPSS rescore
  23. 2026-08-08 08:51 UTCGHSA enrichment
  24. 2026-08-08 04:34 UTCEG score recompute
  25. 2026-08-08 04:34 UTCGHSA enrichment
  26. 2026-08-07 16:25 UTCEPSS rescore
  27. 2026-08-06 13:45 UTCEPSS rescore
  28. 2026-08-06 06:44 UTCEG score recompute
  29. 2026-08-06 06:43 UTCGHSA enrichment
  30. 2026-08-05 19:15 UTCEPSS rescore
  31. 2026-08-05 19:15 UTCEPSS rescore
  32. 2026-08-05 10:11 UTCEG score recompute
  33. 2026-08-05 10:11 UTCGHSA enrichment
  34. 2026-08-04 11:27 UTCEG score recompute
  35. 2026-08-04 11:26 UTCGHSA enrichment
  36. 2026-08-04 10:36 UTCEPSS rescore
  37. 2026-08-04 10:21 UTCEG score recompute▲ 9.80
  38. 2026-08-04 10:21 UTCGHSA enrichment
  39. 2026-08-04 10:19 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  40. 2026-08-03 10:34 UTCEPSS rescore
  41. 2026-08-02 02:25 UTCEPSS rescore
  42. 2026-08-02 02:25 UTCEPSS rescore
  43. 2026-08-01 04:14 UTCEPSS rescore
  44. 2026-07-30 16:26 UTCEPSS rescore
  45. 2026-07-30 01:29 UTCEPSS rescore
  46. 2026-07-28 15:34 UTCEPSS rescore
  47. 2026-07-28 15:34 UTCEPSS rescore
  48. 2026-07-27 02:39 UTCOSV refresh
  49. 2026-07-26 14:53 UTCEPSS rescore
  50. 2026-07-25 14:16 UTCEPSS rescore
  51. 2026-07-24 14:16 UTCEPSS rescore
  52. 2026-07-23 14:16 UTCEPSS rescore
  53. 2026-07-23 02:30 UTCEG score recompute
  54. 2026-07-22 23:16 UTCEG score recompute
  55. 2026-07-22 14:07 UTCEPSS rescore
  56. 2026-07-22 14:07 UTCEPSS rescore
  57. 2026-07-20 17:06 UTCEPSS rescore
  58. 2026-07-19 14:30 UTCEPSS rescore
  59. 2026-07-19 14:29 UTCEPSS rescore
  60. 2026-07-19 02:27 UTCEPSS rescore
  61. 2026-07-19 02:27 UTCEPSS rescore
  62. 2026-07-18 10:03 UTCEPSS rescore
  63. 2026-07-18 10:03 UTCEPSS rescore
  64. 2026-07-16 17:01 UTCEPSS rescore
  65. 2026-07-15 16:56 UTCEPSS rescore
  66. 2026-07-15 01:59 UTCEPSS rescore
  67. 2026-07-15 01:59 UTCEPSS rescore
  68. 2026-07-13 22:28 UTCEPSS rescore
  69. 2026-07-13 22:28 UTCEPSS rescore
  70. 2026-07-13 06:11 UTCEPSS rescore
  71. 2026-07-12 05:45 UTCEPSS rescore
  72. 2026-07-12 05:45 UTCEPSS rescore
  73. 2026-07-11 08:26 UTCEPSS rescore
  74. 2026-07-09 21:17 UTCOSV refresh
  75. 2026-07-09 19:08 UTCEPSS rescore

Related CVEs(same product)

Frequently asked(5)

What is CVE-2023-54257?
CVE-2023-54257 is a critical vulnerability published on December 30, 2025. 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…
When was CVE-2023-54257 disclosed?
CVE-2023-54257 was first published in the National Vulnerability Database on December 30, 2025, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-54257 actively exploited?
CVE-2023-54257 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 52.7% of all scored CVEs.
What is the CVSS score of CVE-2023-54257?
CVE-2023-54257 has a CVSS v4.0 base score of 9.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2023-54257?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-54257, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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