CVE-2023-54303

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-12-30. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

bpf: Disable preemption in bpf_perf_event_output

The nesting protection in bpf_perf_event_output relies on disabled preemption, which is guaranteed for kprobes and tracepoints.

However bpf_perf_event_output can be also called from uprobes context through bpf_prog_run_array_sleepable function which disables migration, but keeps preemption enabled.

This can cause task to be preempted by another one inside the nesting protection and lead eventually to two tasks using same perf_sample_data buffer and cause crashes like:

kernel tried to execute NX-protected page - exploit attempt? (uid: 0) BUG: unable to handle page fault for address: ffffffff82be3eea ... Call Trace: ? __die+0x1f/0x70 ? page_fault_oops+0x176/0x4d0 ? exc_page_fault+0x132/0x230 ? asm_exc_page_fault+0x22/0x30 ? perf_output_sample+0x12b/0x910 ? perf_event_output+0xd0/0x1d0 ? bpf_perf_event_output+0x162/0x1d0 ? bpf_prog_c6271286d9a4c938_krava1+0x76/0x87 ? __uprobe_perf_func+0x12b/0x540 ? uprobe_dispatcher+0x2c4/0x430 ? uprobe_notify_resume+0x2da/0xce0 ? atomic_notifier_call_chain+0x7b/0x110 ? exit_to_user_mode_prepare+0x13e/0x290 ? irqentry_exit_to_user_mode+0x5/0x30 ? asm_exc_int3+0x35/0x40

Fixing this by disabling preemption in bpf_perf_event_output.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

December 30, 2025

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

bpf: Disable preemption in bpf_perf_event_output - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f2c67a3e60d1071b65848efaa8c3b66c363dd025
generic

bpf: Disable preemption in bpf_perf_event_output - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a0ac32cf61e5a76e2429e486925a52ee41dd75e3
generic

bpf: Disable preemption in bpf_perf_event_output - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3654ed5daf492463c3faa434c7000d45c2da2ace

Vendor Advisories for CVE-2023-54303(2)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:5.14.0-427.13.1.el9_42024-04-30redhat
linuxKernel @ 6.1.45—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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.27-1 ... 6.1.38-4~bpo11+1 (8 versions)6.1.52-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.4.11-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.4.11-1—

Data Freshness Timeline

(refreshed 6× in last 7d / 26× 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. 2026-09-18 19:26 UTCEPSS rescore
  2. 2026-09-16 14:06 UTCEPSS rescore
  3. 2026-09-16 05:11 UTCEPSS rescore
  4. 2026-09-16 05:11 UTCEPSS rescore
  5. 2026-09-15 03:08 UTCEPSS rescore
  6. 2026-09-13 16:45 UTCEPSS rescore
  7. 2026-09-11 14:51 UTCEPSS rescore
  8. 2026-09-11 09:34 UTCEPSS rescore
  9. 2026-09-08 21:58 UTCEPSS rescore
  10. 2026-09-07 15:59 UTCEPSS rescore
  11. 2026-09-06 13:46 UTCEPSS rescore
  12. 2026-09-05 15:26 UTCEPSS rescore
  13. 2026-09-04 13:58 UTCEPSS rescore
  14. 2026-09-04 05:04 UTCEPSS rescore
  15. 2026-09-02 14:10 UTCEPSS rescore
  16. 2026-09-01 13:52 UTCEPSS rescore
  17. 2026-09-01 04:36 UTCEPSS rescore
  18. 2026-09-01 00:04 UTCOSV refresh
  19. 2026-08-30 19:15 UTCEPSS rescore
  20. 2026-08-30 01:20 UTCEPSS rescore
  21. 2026-08-28 21:39 UTCEPSS rescore
  22. 2026-08-27 14:23 UTCEPSS rescore
  23. 2026-08-26 14:44 UTCEPSS rescore
  24. 2026-08-25 13:47 UTCEPSS rescore
  25. 2026-08-21 23:47 UTCEPSS rescore
Show 75 more
  1. 2026-08-20 22:53 UTCEPSS rescore
  2. 2026-08-19 17:02 UTCEPSS rescore
  3. 2026-08-18 13:46 UTCEPSS rescore
  4. 2026-08-16 14:54 UTCEPSS rescore
  5. 2026-08-16 02:12 UTCEPSS rescore
  6. 2026-08-15 01:28 UTCEPSS rescore
  7. 2026-08-15 00:48 UTCEG score recompute
  8. 2026-08-15 00:48 UTCVendor advisory
  9. 2026-08-15 00:48 UTCGHSA enrichment
  10. 2026-08-13 21:58 UTCEPSS rescore
  11. 2026-08-12 13:49 UTCEPSS rescore
  12. 2026-08-11 13:40 UTCEPSS rescore
  13. 2026-08-10 23:58 UTCEPSS rescore
  14. 2026-08-09 22:19 UTCEG score recompute
  15. 2026-08-09 22:19 UTCVendor advisory
  16. 2026-08-09 22:19 UTCGHSA enrichment
  17. 2026-08-09 13:44 UTCEPSS rescore
  18. 2026-08-08 16:35 UTCEPSS rescore
  19. 2026-08-08 04:33 UTCEG score recompute
  20. 2026-08-08 04:33 UTCVendor advisory
  21. 2026-08-08 04:33 UTCGHSA enrichment
  22. 2026-08-07 16:25 UTCEPSS rescore
  23. 2026-08-06 13:45 UTCEPSS rescore
  24. 2026-08-06 06:42 UTCEG score recompute
  25. 2026-08-06 06:42 UTCVendor advisory
  26. 2026-08-06 06:42 UTCGHSA enrichment
  27. 2026-08-05 19:15 UTCEPSS rescore
  28. 2026-08-05 19:15 UTCEPSS rescore
  29. 2026-08-05 10:11 UTCEG score recompute
  30. 2026-08-05 10:11 UTCVendor advisory
  31. 2026-08-05 10:11 UTCGHSA enrichment
  32. 2026-08-04 11:26 UTCEG score recompute
  33. 2026-08-04 11:26 UTCVendor advisory
  34. 2026-08-04 11:25 UTCGHSA enrichment
  35. 2026-08-04 10:36 UTCEPSS rescore
  36. 2026-08-04 10:21 UTCEG score recompute▲ 7.80
  37. 2026-08-04 10:21 UTCVendor advisory
  38. 2026-08-04 10:20 UTCGHSA enrichment
  39. 2026-08-04 10:19 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  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 03:09 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. 2026-07-21 15:23 UTCEPSS rescore
  58. 2026-07-20 17:06 UTCEPSS rescore
  59. 2026-07-19 14:30 UTCEPSS rescore
  60. 2026-07-19 14:29 UTCEPSS rescore
  61. 2026-07-19 02:27 UTCEPSS rescore
  62. 2026-07-19 02:27 UTCEPSS rescore
  63. 2026-07-16 17:01 UTCEPSS rescore
  64. 2026-07-15 16:56 UTCEPSS rescore
  65. 2026-07-15 01:59 UTCEPSS rescore
  66. 2026-07-15 01:59 UTCEPSS rescore
  67. 2026-07-13 22:28 UTCEPSS rescore
  68. 2026-07-13 22:28 UTCEPSS rescore
  69. 2026-07-13 06:11 UTCEPSS rescore
  70. 2026-07-12 05:45 UTCEPSS rescore
  71. 2026-07-12 05:45 UTCEPSS rescore
  72. 2026-07-11 08:26 UTCEPSS rescore
  73. 2026-07-09 21:45 UTCOSV refresh
  74. 2026-07-09 19:08 UTCEPSS rescore
  75. 2026-07-08 15:13 UTCEPSS rescore

Frequently asked(5)

What is CVE-2023-54303?
CVE-2023-54303 is a high vulnerability published on December 30, 2025. In the Linux kernel, the following vulnerability has been resolved: bpf: Disable preemption in bpfperfevent_output The nesting protection in bpfperfevent_output relies on disabled preemption, which is guaranteed for kprobes and tracepoints. However bpfperfevent_output can be also called from…
When was CVE-2023-54303 disclosed?
CVE-2023-54303 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-2023-54303 actively exploited?
CVE-2023-54303 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 95.6% of all scored CVEs.
What is the CVSS score of CVE-2023-54303?
CVE-2023-54303 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2023-54303?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-54303, 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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