CVE-2026-63805

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 — 3 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

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:

crypto: nx - fix nx_crypto_ctx_exit argument

nx_crypto_ctx_shash_exit calls nx_crypto_ctx_exit with crypto_shash_ctx(...) but crypto_shash_ctx gives a nx_crypto_ctx *, not a crypto_tfm *.

Fix the type in nx_crypto_ctx_exit and drop the bogus crypto_tfm_ctx call.

This fixes the following oops:

BUG: Unable to handle kernel data access at 0xc0403effffffffc8 Faulting instruction address: 0xc000000000396cb4 Oops: Kernel access of bad area, sig: 11 [#15] Call Trace: nx_crypto_ctx_shash_exit+0x24/0x60 crypto_shash_exit_tfm+0x28/0x40 crypto_destroy_tfm+0x98/0x140 crypto_exit_ahash_using_shash+0x20/0x40 crypto_destroy_tfm+0x98/0x140 hash_release+0x1c/0x30 alg_sock_destruct+0x38/0x60 __sk_destruct+0x48/0x2b0 af_alg_release+0x58/0xb0 __sock_release+0x68/0x150 sock_close+0x20/0x40 __fput+0x110/0x3a0 sys_close+0x48/0xa0 system_call_exception+0x140/0x2d0 system_call_common+0xf4/0x258

.. which came from hardlink(1) opportunistically using AF_ALG.

The same problem exists with nx_crypto_ctx_skcipher_exit getting a context it wasn't expecting, but apparently nobody hit that for years.

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
7%
KEV
Not listed

Published

July 19, 2026

Last Modified

August 17, 2026

Advisory Details (3)

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

crypto: nx - fix nx_crypto_ctx_exit argument - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8d8507a457667f23477a15496b91908a5b5b7cf3
generic

crypto: nx - fix nx_crypto_ctx_exit argument - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/833033e6e55acf11304ff7bbbdf18351d139c281
generic

crypto: nx - fix nx_crypto_ctx_exit argument - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4e67f504ee9ded15e256b64f4fde150e917381d7

Vendor Advisories for CVE-2026-63805(2)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (496 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 7.2~rc5-1~exp1 (335 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.2~rc5-1~exp1 (160 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (153 versions)7.1.3-1—

Data Freshness Timeline

(refreshed 20× in last 7d / 110× 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 153 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-63805?
CVE-2026-63805 is a high vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: crypto: nx - fix nxcryptoctx_exit argument nxcryptoctxshashexit calls nxcryptoctxexit with cryptoshash_ctx(...) but cryptoshashctx gives a nxcryptoctx , not a crypto_tfm . Fix the type in nxcryptoctxexit and drop the bogus…
When was CVE-2026-63805 disclosed?
CVE-2026-63805 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-2026-63805 actively exploited?
CVE-2026-63805 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 93.2% of all scored CVEs.
What is the CVSS score of CVE-2026-63805?
CVE-2026-63805 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-63805?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63805, 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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