CVE-2026-52972

HIGHNVD 5.57.0
EchelonGraph scoreMEDIUM confidence

“▲” beside the score: it is higher than NVD's CVSS score.

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-06-24. NVD baseline CVSS 5.5; sources differ by 1.5.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — Patch released this week

Also known asEUVD-2026-38840 (ENISA EUVD) · GHSA-9qr8-jp95-w4m5 (GitHub Security Advisories)Source: ENISA EUVD

7.0EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 5.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

crypto: af_alg - Cap AEAD AD length to 0x80000000

In order to prevent arithmetic overflows when checking the TX buffer size, cap the associated data length to 0x80000000.

CVSS v3
5.5
EG Score
7.0HIGHmedium confidence
EG Risk
32
EG Risk 32/100

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)
Severity70% × 45%
Impact severity (EG Severity): CVSS 7.0 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 BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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 (7.0): severity, escalated by confirmed exploitation. This CVE's 7.0 is its impact severity (EG Severity), not escalated.

EG Severity
7.0 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 2026-10-25). 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: 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 (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” 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 (10)

Auto-updated Jul 1, 2026
Patch available. Sources: redhat.
Red Hat

2492364 – (CVE-2026-52972) CVE-2026-52972 kernel: crypto: af_alg - Cap AEAD AD length to 0x80000000

https://bugzilla.redhat.com/show_bug.cgi?id=2492364
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-52972
Web page

crypto: af_alg - Cap AEAD AD length to 0x80000000 - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f8a5203596797f394ff3f9aa4005597a92249802
Web page

crypto: af_alg - Cap AEAD AD length to 0x80000000 - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e4c4a5074532eaaa14951994a3aad0d479aa7431
Web page

crypto: af_alg - Cap AEAD AD length to 0x80000000 - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e4c06479d7059888adf2f22bc1ebcf053bf691a2
Web page

crypto: af_alg - Cap AEAD AD length to 0x80000000 - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a9f68d9ed38dd6e5a6c6d75b03d25c1c133e321d
Web page

crypto: af_alg - Cap AEAD AD length to 0x80000000 - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a4fe4eb580bbc7439f649a496d4cf38415a4021c
Web page

crypto: af_alg - Cap AEAD AD length to 0x80000000 - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a1c5672faf8e93e38c2deac3979cc767ca5cf918
Web page

crypto: af_alg - Cap AEAD AD length to 0x80000000 - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/97948906dc8e0ea84775e03e35b60a2063c70193
Web page

crypto: af_alg - Cap AEAD AD length to 0x80000000 - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/265ac26d1c5e17b34d497cbda1f754a1ec8552bc

Patch Availability(5)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatkernel-0:6.12.0-55.113.1.el10_02026-10-23redhat
redhatkernel-rt-0:4.18.0-553.171.1.rt7.512.el8_102026-10-05redhat
redhatkernel-0:4.18.0-553.171.1.el8_102026-10-05redhat
redhatkernel-0:5.14.0-687.53.1.el9_82026-09-28redhat
linuxKernel @ 5.10.258 (fixes >=4.1.0)—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(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 46× 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 335 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 235 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  2. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  3. 2026-10-25 22:27 UTCEG score recompute
  4. 2026-10-25 22:27 UTCVendor advisory
  5. 2026-10-25 22:27 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0
  6. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  7. 2026-10-25 14:21 UTCEG score recompute
  8. 2026-10-25 03:45 UTCEG score recompute
  9. 2026-10-25 03:45 UTCVendor advisory
  10. 2026-10-25 03:45 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0
  11. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  12. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  13. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  14. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  15. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  16. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  17. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  18. 2026-10-18 03:32 UTCEG score recompute
  19. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  20. 2026-10-17 11:17 UTCEG score recompute
  21. 2026-10-17 11:17 UTCVendor advisory
  22. 2026-10-17 11:17 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0
  23. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  24. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  25. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
Show 75 more
  1. 2026-10-14 05:24 UTCOSV refresh
  2. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  3. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  4. 2026-10-12 15:58 UTCEG score recompute
  5. 2026-10-11 19:41 UTCEG score recompute
  6. 2026-10-11 16:56 UTCEG score recompute
  7. 2026-10-11 14:19 UTCEG score recompute
  8. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  11. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  12. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  14. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  16. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  17. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  18. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  19. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  20. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  21. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  22. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  23. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  24. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  25. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  26. 2026-09-23 11:44 UTCEG score recompute
  27. 2026-09-23 11:43 UTCVendor advisory
  28. 2026-09-23 11:43 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0
  29. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  30. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  31. 2026-09-18 08:06 UTCEG score recompute
  32. 2026-09-18 08:06 UTCVendor advisory
  33. 2026-09-18 08:06 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0
  34. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  35. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  36. 2026-09-14 01:55 UTCEG score recompute
  37. 2026-09-14 01:55 UTCVendor advisory
  38. 2026-09-14 01:55 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0
  39. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  40. 2026-09-13 11:57 UTCVendor advisory
  41. 2026-09-13 11:57 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0
  42. 2026-09-12 17:10 UTCEG score recompute
  43. 2026-09-12 17:10 UTCVendor advisory
  44. 2026-09-12 17:10 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0
  45. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  46. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  47. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  48. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  49. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  50. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  51. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  52. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  53. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  54. 2026-08-30 20:16 UTCEG score recompute
  55. 2026-08-30 20:16 UTCVendor advisory
  56. 2026-08-30 20:16 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0
  57. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  58. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  59. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  60. 2026-08-28 04:48 UTCEG score recompute
  61. 2026-08-28 04:48 UTCVendor advisory
  62. 2026-08-28 04:48 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0
  63. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  64. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  65. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  66. 2026-08-24 22:00 UTCEG score recompute
  67. 2026-08-24 22:00 UTCVendor advisory
  68. 2026-08-24 22:00 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0
  69. 2026-08-24 04:38 UTCVendor advisory
  70. 2026-08-24 04:38 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0
  71. 2026-08-23 13:44 UTCVendor advisory
  72. 2026-08-23 13:43 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0
  73. 2026-08-23 01:31 UTCEG score recompute
  74. 2026-08-23 01:31 UTCVendor advisory
  75. 2026-08-23 01:31 UTCGHSA enrichmentGHSA-9qr8-jp95-w4m5 · GitHub severity HIGH · GitHub CVSS 7.0

Frequently asked(5)

What is CVE-2026-52972?
CVE-2026-52972 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: af_alg - Cap AEAD AD length to 0x80000000 In order to prevent arithmetic overflows when checking the TX buffer size, cap the associated data length to 0x80000000.
When was the CVE record for CVE-2026-52972 published?
The CVE record for CVE-2026-52972 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-2026-52972 actively exploited?
CVE-2026-52972 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-2026-52972?
CVE-2026-52972 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + FIRST EPSS + GHSA into a combined EG score of 7.0 (HIGH).
How do I remediate CVE-2026-52972?
A fix for CVE-2026-52972 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-52972 are linked in the Vendor Advisories panel on this page.

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