CVE-2024-56681

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2024-12-28. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
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

A fix is available — apply it.

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

crypto: bcm - add error check in the ahash_hmac_init function

The ahash_init functions may return fails. The ahash_hmac_init should not return ok when ahash_init returns error. For an example, ahash_init will return -ENOMEM when allocation memory is error.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

December 28, 2024

Last Modified

August 5, 2026

Advisory Details (9)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

crypto: bcm - add error check in the ahash_hmac_init function - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/19630cf57233e845b6ac57c9c969a4888925467b
generic

crypto: bcm - add error check in the ahash_hmac_init function - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bba9e38c5ad41d0a88b22a59e5b6dd3e31825118
generic

crypto: bcm - add error check in the ahash_hmac_init function - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ee36db8e8203420e6d5c42eb9428920c2fc36532
generic

crypto: bcm - add error check in the ahash_hmac_init function - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ae5253313e0ea5f00c06176074592b7f493c8546
generic

crypto: bcm - add error check in the ahash_hmac_init function - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/05f0a3f5477ecaa1cf46448504afe9e7c2e96fcc
generic

crypto: bcm - add error check in the ahash_hmac_init function - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4ea3e3b761e371102bb1486778e2f8dbc9e37413
generic

crypto: bcm - add error check in the ahash_hmac_init function - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/28f8ffa945f7d7150463e15097ea73b19529d6f5
generic

crypto: bcm - add error check in the ahash_hmac_init function - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/75e1e38e5d80d6d9011b7322698ffba3dd3db30a
generic

crypto: bcm - add error check in the ahash_hmac_init function - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8f1a9a960b1107bd0e0ec3736055f5ed0e717edf

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.11.0-18.18) @ oracular2026-05-23ubuntu
ubuntulinux-tools-realtime-hwe-24.04-edge (6.11.0-1005.5) @ oracular2026-05-23ubuntu
ubuntulinux-tools-oem-24.04b (6.11.0-1015.15) @ noble2026-05-23ubuntu
ubuntulinux-xilinx-zynqmp-tools-host (5.15.0-1044.48) @ jammy2026-05-23ubuntu
ubuntulinux-tools-gcp-fips (5.15.0.1079.69) @ jammy2026-05-23ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.135.133) @ jammy2026-05-23ubuntu
ubuntulinux-tools-kvm (5.15.0.1076.72) @ jammy2026-05-23ubuntu
ubuntulinux-tools-fips (5.4.0.1116.113) @ focal2026-05-23ubuntu
ubuntulinux-tools-aws-edge (5.4.0.1142.152~18.04.1) @ bionic2026-05-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt (5.15.0.1033.33) @ jammy2026-05-23ubuntu
ubuntulinux-tools-aws-fips (5.4.0.1142.89) @ focal2026-05-23ubuntu
ubuntulinux-tools-gcp-fips (5.4.0.1145.87) @ focal2026-05-23ubuntu
ubuntulinux-virtual-hwe-18.04-edge (5.4.0.211.206) @ focal2026-05-23ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.4.0-1060 (5.4.0-1060.64) @ focal2026-05-23ubuntu
ubuntulinux-tools-realtime (5.15.0.1080.83) @ jammy2026-05-23ubuntu
ubuntulinux-tools-aws-lts-20.04 (5.4.0.1142.139) @ focal2026-05-23ubuntu
ubuntulinux-virtual-hwe-20.04-edge (5.15.0.136.147~20.04.1) @ focal2026-05-23ubuntu
ubuntulinux-tools-azure-fde-edge (5.15.0.1086.95~20.04.1.61) @ focal2026-05-23ubuntu
ubuntulinux-tools-iot (5.4.0.1048.46) @ focal2026-05-23ubuntu
ubuntulinux-virtual (6.8.0-58.60) @ noble2026-05-23ubuntu
ubuntulinux-tools-gkeop-6.8 (6.8.0-1010.12) @ noble2026-05-23ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1028.30~22.04.1) @ jammy2026-05-23ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1081.90~20.04.1) @ focal2026-05-23ubuntu
ubuntulinux-tools-realtime-hwe-24.04 (6.8.1-1020.21) @ noble2026-05-23ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-58.60~22.04.1) @ jammy2026-05-23ubuntu
ubuntulinux-tools-raspi-hwe-18.04-edge (5.4.0.1129.142~18.04.1) @ bionic2026-05-23ubuntu
ubuntulinux-tools-azure-nvidia (6.8.0-1014.15) @ noble2026-05-23ubuntu
ubuntulinux-tools-aws-edge (6.8.0-1027.29~22.04.1) @ jammy2026-05-23ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1074.77~20.04.1) @ focal2026-05-23ubuntu
ubuntulinux-tools-ibm-edge (5.4.0.1090.95~18.04.1) @ bionic2026-05-23ubuntu
linuxKernel @ 4.19.325—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.

All Vendor Advisories

(25)

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 12× in last 7d / 44× 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 121 total refreshes for this CVE.

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

Related CVEs(same product + same vendor)

Frequently asked(5)

What is CVE-2024-56681?
CVE-2024-56681 is a medium vulnerability published on December 28, 2024. In the Linux kernel, the following vulnerability has been resolved: crypto: bcm - add error check in the ahashhmacinit function The ahashinit functions may return fails. The ahashhmac_init should not return ok when ahashinit returns error. For an example, ahashinit will return -ENOMEM when…
When was CVE-2024-56681 disclosed?
CVE-2024-56681 was first published in the National Vulnerability Database on December 28, 2024, 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-2024-56681 actively exploited?
CVE-2024-56681 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 84.7% of all scored CVEs.
What is the CVSS score of CVE-2024-56681?
CVE-2024-56681 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2024-56681?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-56681, 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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