CVE-2026-43336

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-08. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

lib/crypto: chacha: Zeroize permuted_state before it leaves scope

Since the ChaCha permutation is invertible, the local variable 'permuted_state' is sufficient to compute the original 'state', and thus the key, even after the permutation has been done.

While the kernel is quite inconsistent about zeroizing secrets on the stack (and some prominent userspace crypto libraries don't bother at all since it's not guaranteed to work anyway), the kernel does try to do it as a best practice, especially in cases involving the RNG.

Thus, explicitly zeroize 'permuted_state' before it goes out of scope.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
36%
KEV
Not listed

Published

May 8, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated May 11, 2026
No patch confirmed yet.
generic

lib/crypto: chacha: Zeroize permuted_state before it leaves scope - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e90ee961af515a484f091678ce58a4c3f7b73b02
generic

lib/crypto: chacha: Zeroize permuted_state before it leaves scope - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e5046823f8fa3677341b541a25af2fcb99a5b1e0
generic

lib/crypto: chacha: Zeroize permuted_state before it leaves scope - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bd62d9b44464a6c20a34a74068e7a784d0afa04a
generic

lib/crypto: chacha: Zeroize permuted_state before it leaves scope - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b416a4245f04a450c67a13e6d96056c37c5b33fe
generic

lib/crypto: chacha: Zeroize permuted_state before it leaves scope - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/91999af43ca2125e3b2c18fcfc02912ada02efc3
generic

lib/crypto: chacha: Zeroize permuted_state before it leaves scope - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1d761e5a7340c46479fb2399598f331e4fe2c633
generic

lib/crypto: chacha: Zeroize permuted_state before it leaves scope - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1933249263c3a98df79992f61a566476e4163bcc
generic

lib/crypto: chacha: Zeroize permuted_state before it leaves scope - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/066c760acead1fb743bae294dbd89f479ae43b9b

Patch Availability(27)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-23ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-23ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-08-23ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-23ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-23ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-edge (6.8.0-1063.71~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-23ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-23ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-23ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-23ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-23ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-23ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-08-23ubuntu
linuxKernel @ 5.10.253—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
linux5.10.103-1 ... 5.10.92-2 (53 versions)5.10.257-1—
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 (125 versions)6.19.12-1—

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 7× in last 7d / 31× 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 220 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 14:53 UTCOSV refresh
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 09:37 UTCEPSS rescore
  6. 2026-09-10 09:34 UTCEPSS rescore
  7. 2026-09-08 22:00 UTCEPSS rescore
  8. 2026-09-07 16:01 UTCEPSS rescore
  9. 2026-09-06 13:47 UTCEPSS rescore
  10. 2026-09-04 05:06 UTCEPSS rescore
  11. 2026-09-02 14:12 UTCEPSS rescore
  12. 2026-09-01 13:54 UTCEPSS rescore
  13. 2026-08-30 19:17 UTCEPSS rescore
  14. 2026-08-30 01:22 UTCEPSS rescore
  15. 2026-08-28 21:41 UTCEPSS rescore
  16. 2026-08-27 14:25 UTCEPSS rescore
  17. 2026-08-26 14:46 UTCEPSS rescore
  18. 2026-08-25 13:49 UTCEPSS rescore
  19. 2026-08-23 19:14 UTCEG score recompute
  20. 2026-08-23 19:14 UTCVendor advisory
  21. 2026-08-23 19:14 UTCGHSA enrichment
  22. 2026-08-23 00:19 UTCEPSS rescore
  23. 2026-08-21 23:49 UTCEPSS rescore
  24. 2026-08-20 22:55 UTCEPSS rescore
  25. 2026-08-19 17:04 UTCEPSS rescore
Show 75 more
  1. 2026-08-18 13:48 UTCEPSS rescore
  2. 2026-08-17 13:47 UTCEPSS rescore
  3. 2026-08-17 11:56 UTCEG score recompute
  4. 2026-08-17 11:56 UTCVendor advisory
  5. 2026-08-17 11:55 UTCGHSA enrichment
  6. 2026-08-16 14:56 UTCEPSS rescore
  7. 2026-08-16 04:37 UTCEG score recompute
  8. 2026-08-16 04:37 UTCVendor advisory
  9. 2026-08-16 04:37 UTCGHSA enrichment
  10. 2026-08-16 02:14 UTCEPSS rescore
  11. 2026-08-15 01:30 UTCEPSS rescore
  12. 2026-08-14 15:19 UTCVendor advisory
  13. 2026-08-14 15:19 UTCGHSA enrichment
  14. 2026-08-14 03:11 UTCEG score recompute
  15. 2026-08-14 03:11 UTCVendor advisory
  16. 2026-08-14 03:11 UTCGHSA enrichment
  17. 2026-08-13 22:00 UTCEPSS rescore
  18. 2026-08-13 04:57 UTCVendor advisory
  19. 2026-08-13 04:57 UTCGHSA enrichment
  20. 2026-08-12 16:49 UTCEG score recompute
  21. 2026-08-12 16:49 UTCVendor advisory
  22. 2026-08-12 16:49 UTCGHSA enrichment
  23. 2026-08-12 13:51 UTCEPSS rescore
  24. 2026-08-11 15:52 UTCEG score recompute
  25. 2026-08-11 15:52 UTCVendor advisory
  26. 2026-08-11 15:52 UTCGHSA enrichment
  27. 2026-08-11 13:43 UTCEPSS rescore
  28. 2026-08-11 01:19 UTCEG score recompute
  29. 2026-08-11 01:19 UTCVendor advisory
  30. 2026-08-11 01:19 UTCGHSA enrichment
  31. 2026-08-11 00:00 UTCEPSS rescore
  32. 2026-08-10 02:42 UTCVendor advisory
  33. 2026-08-10 02:42 UTCGHSA enrichment
  34. 2026-08-09 14:34 UTCEG score recompute
  35. 2026-08-09 14:34 UTCVendor advisory
  36. 2026-08-09 14:34 UTCGHSA enrichment
  37. 2026-08-09 13:46 UTCEPSS rescore
  38. 2026-08-09 02:26 UTCEG score recompute
  39. 2026-08-09 02:26 UTCVendor advisory
  40. 2026-08-09 02:26 UTCGHSA enrichment
  41. 2026-08-08 16:37 UTCEPSS rescore
  42. 2026-08-08 09:05 UTCVendor advisory
  43. 2026-08-08 09:05 UTCGHSA enrichment
  44. 2026-08-07 20:57 UTCEG score recompute
  45. 2026-08-07 20:57 UTCVendor advisory
  46. 2026-08-07 20:57 UTCGHSA enrichment
  47. 2026-08-07 08:49 UTCVendor advisory
  48. 2026-08-07 08:49 UTCGHSA enrichment
  49. 2026-08-06 16:52 UTCEG score recompute
  50. 2026-08-06 16:52 UTCVendor advisory
  51. 2026-08-06 16:52 UTCGHSA enrichment
  52. 2026-08-06 13:46 UTCEPSS rescore
  53. 2026-08-06 01:58 UTCEG score recompute
  54. 2026-08-06 01:58 UTCVendor advisory
  55. 2026-08-06 01:58 UTCGHSA enrichment
  56. 2026-08-05 19:17 UTCEPSS rescore
  57. 2026-08-05 13:50 UTCEG score recompute
  58. 2026-08-05 13:50 UTCVendor advisory
  59. 2026-08-05 13:50 UTCGHSA enrichment
  60. 2026-08-04 15:10 UTCEPSS rescore
  61. 2026-08-04 10:38 UTCEPSS rescore
  62. 2026-08-03 19:33 UTCEG score recompute
  63. 2026-08-03 19:33 UTCVendor advisory
  64. 2026-08-03 19:33 UTCGHSA enrichment
  65. 2026-08-03 10:36 UTCEPSS rescore
  66. 2026-08-03 03:44 UTCVendor advisory
  67. 2026-08-03 03:44 UTCGHSA enrichment
  68. 2026-08-02 15:14 UTCVendor advisory
  69. 2026-08-02 15:14 UTCGHSA enrichment
  70. 2026-08-02 03:06 UTCEG score recompute
  71. 2026-08-02 03:06 UTCVendor advisory
  72. 2026-08-02 03:06 UTCGHSA enrichment
  73. 2026-08-02 02:27 UTCEPSS rescore
  74. 2026-08-01 04:16 UTCEPSS rescore
  75. 2026-07-30 16:28 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-43336?
CVE-2026-43336 is a high vulnerability published on May 8, 2026. In the Linux kernel, the following vulnerability has been resolved: lib/crypto: chacha: Zeroize permuted_state before it leaves scope Since the ChaCha permutation is invertible, the local variable 'permuted_state' is sufficient to compute the original 'state', and thus the key, even after the…
When was CVE-2026-43336 disclosed?
CVE-2026-43336 was first published in the National Vulnerability Database on May 8, 2026, 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-2026-43336 actively exploited?
CVE-2026-43336 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 64.1% of all scored CVEs.
What is the CVSS score of CVE-2026-43336?
CVE-2026-43336 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-43336?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43336, 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-2026-43336

Explore →

Is Your Infrastructure Affected by CVE-2026-43336?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs