CVE-2023-54257

UNRATEDCVSS · not yet scored
—
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS v2: —Exploit: 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
—
EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
—
EG Risk
—
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

December 30, 2025

Last Modified

April 15, 2026

References (8)

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.

Data Freshness Timeline

(refreshed 8× in last 7d / 42× 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 124 total refreshes for this CVE.

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

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Frequently asked(4)

What is CVE-2023-54257?
CVE-2023-54257 is a publicly disclosed 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 April 15, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 91.8% of all scored CVEs.
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.

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