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(4)

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

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-31.31~24.04.1) @ noble2026-09-18ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-18ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-18ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1018.18~24.04.1) @ noble2026-09-18ubuntu
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 / 92× 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 346 total refreshes for this CVE.

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

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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