CVE-2026-63824

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-19. a secondary CVSS source baseline 7.8; sources differ by 0.0.

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

KEYS: fix overflow in keyctl_pkey_params_get_2()

The length for the internal output buffer is calculated incorrectly, which can result overflow when a too small buffer is provided.

Fix the bug by allocating internal output with the size of the maximum length of the cryptographic primitive instead of caller provided size.

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
3%
KEV
Not listed

Published

July 19, 2026

Last Modified

August 17, 2026

Advisory Details (8)

Auto-updated Jul 21, 2026
No patch confirmed yet.
generic

KEYS: fix overflow in keyctl_pkey_params_get_2() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/cb481e59ea6cae3b7796ac1d7a22b6b24c3f3c0b
generic

KEYS: fix overflow in keyctl_pkey_params_get_2() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b1e247338bc71826a2d2def3e0874c34749df69a
generic

KEYS: fix overflow in keyctl_pkey_params_get_2() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b11c1fa32667692a2c0566e10163758e786e430c
generic

KEYS: fix overflow in keyctl_pkey_params_get_2() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/670fc6a311ed321522b7fff92cf0fc376b4f6e78
generic

KEYS: fix overflow in keyctl_pkey_params_get_2() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/622ec2dcd59f21623f2a7ab773c80ceb7d555e3a
generic

KEYS: fix overflow in keyctl_pkey_params_get_2() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5966e4e2ba213ab7ad559166152eb4f1f170dd2c
generic

KEYS: fix overflow in keyctl_pkey_params_get_2() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5165f1cc727f1322456735df212d8e26ec237a8d
generic

KEYS: fix overflow in keyctl_pkey_params_get_2() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0f3058d7d26f81df9b68a18ddbe164bdc3c5eff3

Vendor Advisories for CVE-2026-63824(3)

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

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-31.31) @ resolute2026-09-11ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-11ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-11ubuntu
redhatkernel-0:6.12.0-211.51.1.el10_22026-09-04redhat
redhatkernel-0:5.14.0-687.44.1.el9_82026-09-04redhat

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

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (55 versions)5.10.262-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.176-1~deb11u1 (21 versions)6.1.177-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (54 versions)6.1.177-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.95-1~bpo12+1 (29 versions)6.12.95-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (156 versions)7.1.3-1—

Additional Vendor Advisories

(4)

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 17× in last 7d / 115× 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 327 total refreshes for this CVE.

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

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-63824?
CVE-2026-63824 is a high vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: KEYS: fix overflow in keyctlpkeyparamsget2() The length for the internal output buffer is calculated incorrectly, which can result overflow when a too small buffer is provided. Fix the bug by allocating internal output with the…
When was CVE-2026-63824 disclosed?
CVE-2026-63824 was first published in the National Vulnerability Database on July 19, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63824 actively exploited?
CVE-2026-63824 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 97.0% of all scored CVEs.
What is the CVSS score of CVE-2026-63824?
CVE-2026-63824 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-63824?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63824, 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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