CVE-2025-37893

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2025-04-18. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: 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:

LoongArch: BPF: Fix off-by-one error in build_prologue()

Vincent reported that running BPF progs with tailcalls on LoongArch causes kernel hard lockup. Debugging the issues shows that the JITed image missing a jirl instruction at the end of the epilogue.

There are two passes in JIT compiling, the first pass set the flags and the second pass generates JIT code based on those flags. With BPF progs mixing bpf2bpf and tailcalls, build_prologue() generates N insns in the first pass and then generates N+1 insns in the second pass. This makes epilogue_offset off by one and we will jump to some unexpected insn and cause lockup. Fix this by inserting a nop insn.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

April 18, 2025

Last Modified

August 5, 2026

Advisory Details (5)

Auto-updated Aug 2, 2026
No patch confirmed yet.
generic

LoongArch: BPF: Fix off-by-one error in build_prologue() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c74d95a5679741ef428974ab788f5b0758dc78ae
generic

LoongArch: BPF: Fix off-by-one error in build_prologue() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b3ffad2f02db4aace6799fe0049508b8925eae45
generic

LoongArch: BPF: Fix off-by-one error in build_prologue() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7e2586991e36663c9bc48c828b83eab180ad30a9
generic

LoongArch: BPF: Fix off-by-one error in build_prologue() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/48b904de2408af5f936f0e03f48dfcddeab58aa0
generic

LoongArch: BPF: Fix off-by-one error in build_prologue() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/205a2182c51ffebaef54d643e3745e720cded08b

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 6.6.87—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
linux6.1.106-1 ... 7.2~rc7-1~exp1 (350 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—6.12.25-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—6.12.25-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 5× 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 148 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2025-37893?
CVE-2025-37893 is a medium vulnerability published on April 18, 2025. In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Fix off-by-one error in build_prologue() Vincent reported that running BPF progs with tailcalls on LoongArch causes kernel hard lockup. Debugging the issues shows that the JITed image missing a jirl instruction at…
When was CVE-2025-37893 disclosed?
CVE-2025-37893 was first published in the National Vulnerability Database on April 18, 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-2025-37893 actively exploited?
CVE-2025-37893 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 79.6% of all scored CVEs.
What is the CVSS score of CVE-2025-37893?
CVE-2025-37893 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2025-37893?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-37893, 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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