CVE-2026-53016

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-24. A secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 4 sources updated this week

Also known asEUVD-2026-38884 (ENISA EUVD) · GHSA-4rx4-73jx-c5r8 (GitHub Security Advisories)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

crypto: ccp - copy IV using skcipher ivsize

AF_ALG rfc3686-ctr-aes-ccp requests pass an 8-byte IV to the driver.

ccp_aes_complete() restores AES_BLOCK_SIZE bytes into the caller's IV buffer while RFC3686 skciphers expose an 8-byte IV, so the restore overruns the provided buffer.

Use crypto_skcipher_ivsize() to copy only the algorithm's IV length.

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
3rd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.1% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 24, 2026

Last Modified

October 25, 2026

Advisory Details (8)

Auto-updated Jun 28, 2026
Patch available.
Web page

crypto: ccp - copy IV using skcipher ivsize - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eecee15e263ccb8cd77170a56ab6c969cb54dd6a
Web page

crypto: ccp - copy IV using skcipher ivsize - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/dfb2cf434829819268fe50f41542aad318ad62b2
Web page

crypto: ccp - copy IV using skcipher ivsize - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/df9784bb5b637ac80f4a2768a58ca9a50bef28a9
Web page

crypto: ccp - copy IV using skcipher ivsize - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bb01d8f1f385bc9034ca114d3508c7fdea24fc9a
Web page

crypto: ccp - copy IV using skcipher ivsize - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4
Web page

crypto: ccp - copy IV using skcipher ivsize - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/939061b2d0f7f15114e34b4ce878ef50ff4089c3
Web page

crypto: ccp - copy IV using skcipher ivsize - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/798d409a8949f3f495f238549b86de2886b129bd
Web page

crypto: ccp - copy IV using skcipher ivsize - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/227c1e1d9e2aa4cfc65ba446d5690da1f546cda4

Patch Availability(31)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntulinux-tools-azure-edge (7.0.0-1014.14~24.04.1) @ noble2026-11-02ubuntu
ubuntulinux-tools-oracle-edge (7.0.0-1011.11~24.04.1) @ noble2026-11-02ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-11-02ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-11-02ubuntu
ubuntulinux-tools-azure-edge (6.8.0-1063.71~22.04.1) @ jammy2026-11-02ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-11-02ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-11-02ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-11-02ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-11-02ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-11-02ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-11-02ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-11-02ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-11-02ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1106.104) @ jammy2026-11-02ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-11-02ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-11-02ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-11-02ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-11-02ubuntu
redhatkernel-rt-0:5.14.0-284.191.1.rt14.476.el9_22026-09-16redhat
redhatkernel-0:5.14.0-284.191.1.el9_22026-09-16redhat
redhatkernel-0:4.18.0-305.206.1.el8_42026-09-09redhat
redhatkernel-0:6.12.0-55.103.1.el10_02026-09-08redhat
redhatkernel-0:4.18.0-477.161.1.el8_82026-08-31redhat
redhatkernel-0:5.14.0-427.146.1.el9_42026-08-25redhat
redhatkernel-0:4.18.0-372.208.1.el8_62026-08-25redhat
redhatkernel-0:5.14.0-570.135.1.el9_62026-08-19redhat
redhatkernel-0:4.18.0-553.156.1.el8_102026-08-17redhat
redhatkernel-rt-0:4.18.0-553.156.1.rt7.497.el8_102026-08-17redhat
redhatkernel-0:6.12.0-211.34.1.el10_22026-07-14redhat
redhatkernel-0:5.14.0-687.25.1.el9_82026-07-13redhat
linuxKernel @ 5.10.258 (fixes >=3.14.0)—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

(5 across 4 ecosystems)
Debian:11(2)
PackageVulnerable rangeFix by version rangeDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)
  • every version up to 5.10.259-1: fixed in 5.10.259-1
—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)
  • every version up to 6.1.176-1~deb11u1: fixed in 6.1.176-1~deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)
  • every version up to 6.1.176-1: fixed in 6.1.176-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)
  • every version up to 6.12.94-1: fixed in 6.12.94-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (141 versions)
  • every version up to 7.0.10-1: fixed in 7.0.10-1
—

Weakness Classification(2)

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

Additional Vendor Advisories

(13)

Data Freshness Timeline

(refreshed 10× in last 7d / 55× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 396 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 296 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  2. 2026-11-02 12:25 UTCEG score recompute
  3. 2026-11-02 12:25 UTCVendor advisory
  4. 2026-11-02 12:25 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  5. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  6. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  7. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  8. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  9. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  10. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  11. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  12. 2026-10-25 22:26 UTCEG score recompute
  13. 2026-10-25 22:26 UTCVendor advisory
  14. 2026-10-25 22:26 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  15. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  16. 2026-10-25 14:21 UTCEG score recompute
  17. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  18. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  19. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  20. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  21. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  22. 2026-10-19 20:41 UTCEG score recompute
  23. 2026-10-19 20:41 UTCVendor advisory
  24. 2026-10-19 20:40 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  25. 2026-10-19 20:07 UTCEG score recompute
Show 75 more
  1. 2026-10-19 20:07 UTCVendor advisory
  2. 2026-10-19 20:07 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  3. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  4. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  5. 2026-10-18 03:32 UTCEG score recompute
  6. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  7. 2026-10-16 17:09 UTCEG score recompute
  8. 2026-10-16 17:09 UTCVendor advisory
  9. 2026-10-16 17:09 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  10. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  11. 2026-10-16 15:44 UTCEG score recompute
  12. 2026-10-16 15:44 UTCVendor advisory
  13. 2026-10-16 15:44 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  14. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  15. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  16. 2026-10-14 05:24 UTCOSV refresh
  17. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  19. 2026-10-12 15:58 UTCEG score recompute
  20. 2026-10-11 19:41 UTCEG score recompute
  21. 2026-10-11 16:56 UTCEG score recompute
  22. 2026-10-11 14:19 UTCEG score recompute
  23. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  24. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  25. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  26. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  27. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  28. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  29. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  30. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  31. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  32. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  33. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  34. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  35. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  36. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  37. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  38. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  39. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  40. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  41. 2026-09-23 11:25 UTCEG score recompute
  42. 2026-09-23 11:25 UTCVendor advisory
  43. 2026-09-23 11:25 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  44. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  45. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  46. 2026-09-18 07:59 UTCEG score recompute
  47. 2026-09-18 07:59 UTCVendor advisory
  48. 2026-09-18 07:59 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  49. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  50. 2026-09-16 13:43 UTCEG score recompute
  51. 2026-09-16 13:43 UTCVendor advisory
  52. 2026-09-16 13:42 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  53. 2026-09-16 12:21 UTCEG score recompute
  54. 2026-09-16 12:21 UTCVendor advisory
  55. 2026-09-16 12:21 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  56. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  57. 2026-09-14 01:50 UTCEG score recompute
  58. 2026-09-14 01:50 UTCVendor advisory
  59. 2026-09-14 01:49 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  60. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  61. 2026-09-13 09:57 UTCVendor advisory
  62. 2026-09-13 09:56 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  63. 2026-09-13 09:54 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  64. 2026-09-12 16:54 UTCEG score recompute
  65. 2026-09-12 16:54 UTCVendor advisory
  66. 2026-09-12 16:53 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  67. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  68. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  69. 2026-09-09 13:39 UTCEG score recompute
  70. 2026-09-09 13:39 UTCVendor advisory
  71. 2026-09-09 13:39 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  72. 2026-09-09 12:37 UTCEG score recompute
  73. 2026-09-09 12:37 UTCVendor advisory
  74. 2026-09-09 12:37 UTCGHSA enrichmentGHSA-4rx4-73jx-c5r8 · GitHub severity HIGH · GitHub CVSS 7.8
  75. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile

Frequently asked(5)

What is CVE-2026-53016?
CVE-2026-53016 is a high-severity vulnerability; its CVE record was published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: crypto: ccp - copy IV using skcipher ivsize AF_ALG rfc3686-ctr-aes-ccp requests pass an 8-byte IV to the driver. ccp_aes_complete() restores AES_BLOCK_SIZE bytes into the caller's IV buffer while RFC3686 skciphers expose an 8-byte…
When was the CVE record for CVE-2026-53016 published?
The CVE record for CVE-2026-53016 was published on June 24, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 25, 2026; the record at its source may have been updated since.
Is CVE-2026-53016 actively exploited?
CVE-2026-53016 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53016?
CVE-2026-53016 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-53016?
A fix for CVE-2026-53016 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-53016 are linked in the Vendor Advisories panel on this page.

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