CVE-2026-31520

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-04-22. 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:

HID: apple: avoid memory leak in apple_report_fixup()

The apple_report_fixup() function was returning a newly kmemdup()-allocated buffer, but never freeing it.

The caller of report_fixup() does not take ownership of the returned pointer, but it *is* permitted to return a sub-portion of the input rdesc, whose lifetime is managed by the caller.

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
2%
KEV
Not listed

Published

April 22, 2026

Last Modified

April 28, 2026

Advisory Details (6)

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

HID: apple: avoid memory leak in apple_report_fixup() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e652ebd29928181c3e6820e303da25873e9917d4
generic

HID: apple: avoid memory leak in apple_report_fixup() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e2f090aeb7b9930a964e151910f4d45b04c8a7e5
generic

HID: apple: avoid memory leak in apple_report_fixup() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/be1a341c161430282acdfe2ac99b413271575cf1
generic

HID: apple: avoid memory leak in apple_report_fixup() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/31860c3f7ac66ab897a8c90dc4e74fa17ca0b624
generic

HID: apple: avoid memory leak in apple_report_fixup() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2635d0c715f3fb177e0f80ecd5fa48feb6bf3884
generic

HID: apple: avoid memory leak in apple_report_fixup() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/239c15116d80f67d32f00acc34575f1a6b699613

Vendor Advisories for CVE-2026-31520(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 @ 6.1.168—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
linux-6.16.1.106-3~deb11u1 ... 6.1.164-1~deb11u1 (16 versions)6.1.170-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (48 versions)6.1.170-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (124 versions)6.19.11-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(13)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 5× 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 224 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-31520?
CVE-2026-31520 is a medium vulnerability published on April 22, 2026. In the Linux kernel, the following vulnerability has been resolved: HID: apple: avoid memory leak in applereportfixup() The applereportfixup() function was returning a newly kmemdup()-allocated buffer, but never freeing it. The caller of report_fixup() does not take ownership of the returned…
When was CVE-2026-31520 disclosed?
CVE-2026-31520 was first published in the National Vulnerability Database on April 22, 2026, with the most recent update on April 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-31520 actively exploited?
CVE-2026-31520 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 97.7% of all scored CVEs.
What is the CVSS score of CVE-2026-31520?
CVE-2026-31520 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-31520?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31520, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-31520

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