CVE-2026-45893

HIGHNVD 7.17.1
EchelonGraph scoreMEDIUM confidence

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

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. NVD baseline CVSS 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week
7.1EG
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: 7.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

apparmor: Fix & Optimize table creation from possibly unaligned memory

Source blob may come from userspace and might be unaligned. Try to optize the copying process by avoiding unaligned memory accesses.

  • Added Fixes tag
  • Added "Fix &" to description as this doesn't just optimize but fixes
a potential unaligned memory access [jj: remove duplicate word "convert" in comment trigger checkpatch warning]

CVSS v3
7.1
EG Score
7.1HIGHmedium 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)
Severity71% × 45%
Impact severity (EG Severity): CVSS 7.1 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
2nd
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 (7.1): severity, escalated by confirmed exploitation. This CVE's 7.1 is its impact severity (EG Severity), not escalated.

EG Severity
7.1 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 2026-10-17). 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

May 27, 2026

Last Modified

June 25, 2026

Advisory Details (4)

Auto-updated Jun 25, 2026
Patch available.
Web page

apparmor: Fix & Optimize table creation from possibly unaligned memory - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e027999049c493fb728ead5a90db76942181a935
Web page

apparmor: Fix & Optimize table creation from possibly unaligned memory - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6fc367bfd4c8886e6b1742aabbd1c0bdc310db3a
Web page

apparmor: Fix & Optimize table creation from possibly unaligned memory - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/47e351dfef60ab0e3285133556e1a9c7f646a969
Web page

apparmor: Fix & Optimize table creation from possibly unaligned memory - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/226c3b10aab23f73b03c47e7773107de56ba3a4e

Vendor Advisories for CVE-2026-45893(2)

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

Patch Availability(13)

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 rangeFix by version rangeDependents
linux5.10.103-1 ... 7.2~rc5-1~exp1 (496 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.1.106-1 ... 7.2~rc7-1~exp1 (358 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)
  • every version up to 6.12.85-1: fixed in 6.12.85-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
linux6.12.100-1 ... 6.18~rc7-1~exp1 (104 versions)
  • every version up to 6.18.14-1: fixed in 6.18.14-1
—

Weakness Classification(1)

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

All Vendor Advisories

(12)

Data Freshness Timeline

(refreshed 10× in last 7d / 30× 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 257 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 157 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  2. 2026-10-18 03:37 UTCEG score recompute
  3. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  4. 2026-10-17 13:32 UTCEG score recompute
  5. 2026-10-17 13:32 UTCVendor advisory
  6. 2026-10-17 13:32 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  7. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  9. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  10. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  11. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  12. 2026-10-12 16:03 UTCEG score recompute
  13. 2026-10-11 19:46 UTCEG score recompute
  14. 2026-10-11 17:00 UTCEG score recompute
  15. 2026-10-11 14:25 UTCEG score recompute
  16. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  17. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  19. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  20. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  22. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  23. 2026-10-03 18:51 UTCOSV refresh
  24. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  25. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 5th percentile
Show 75 more
  1. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  3. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  4. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  5. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  6. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  7. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  8. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  9. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  10. 2026-09-14 09:08 UTCEG score recompute
  11. 2026-09-14 09:08 UTCVendor advisory
  12. 2026-09-14 09:08 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  13. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  14. 2026-09-13 04:09 UTCOSV refresh
  15. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  16. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  17. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  18. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  19. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  20. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  21. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  22. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  23. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  24. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  25. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  26. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  27. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  28. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  29. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  30. 2026-08-25 05:44 UTCEG score recompute
  31. 2026-08-25 05:44 UTCVendor advisory
  32. 2026-08-25 05:44 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  33. 2026-08-23 15:34 UTCEG score recompute
  34. 2026-08-23 15:34 UTCVendor advisory
  35. 2026-08-23 15:34 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  36. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  37. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  38. 2026-08-21 20:53 UTCEG score recompute
  39. 2026-08-21 20:53 UTCVendor advisory
  40. 2026-08-21 20:53 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  41. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  42. 2026-08-20 17:42 UTCEG score recompute
  43. 2026-08-20 17:42 UTCVendor advisory
  44. 2026-08-20 17:42 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  45. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  46. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  47. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  48. 2026-08-17 09:21 UTCVendor advisory
  49. 2026-08-17 09:21 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  50. 2026-08-16 16:26 UTCEG score recompute
  51. 2026-08-16 16:26 UTCVendor advisory
  52. 2026-08-16 16:26 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  53. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  54. 2026-08-16 02:55 UTCEG score recompute
  55. 2026-08-16 02:55 UTCVendor advisory
  56. 2026-08-16 02:55 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  57. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  58. 2026-08-15 02:00 UTCEG score recompute
  59. 2026-08-15 02:00 UTCVendor advisory
  60. 2026-08-15 02:00 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  61. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  62. 2026-08-14 13:48 UTCVendor advisory
  63. 2026-08-14 13:48 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  64. 2026-08-14 01:35 UTCEG score recompute
  65. 2026-08-14 01:35 UTCVendor advisory
  66. 2026-08-14 01:35 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  67. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  68. 2026-08-13 02:19 UTCVendor advisory
  69. 2026-08-13 02:19 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  70. 2026-08-12 14:07 UTCEG score recompute
  71. 2026-08-12 14:07 UTCVendor advisory
  72. 2026-08-12 14:07 UTCGHSA enrichmentGHSA-44ww-rw32-794r · GitHub severity HIGH · GitHub CVSS 7.1
  73. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  74. 2026-08-12 01:49 UTCEG score recompute
  75. 2026-08-12 01:49 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-45893?
CVE-2026-45893 is a high-severity vulnerability; its CVE record was published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix & Optimize table creation from possibly unaligned memory Source blob may come from userspace and might be unaligned. Try to optize the copying process by avoiding unaligned memory accesses. Added Fixes tag Added "Fix…
When was the CVE record for CVE-2026-45893 published?
The CVE record for CVE-2026-45893 was published on May 27, 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 June 25, 2026; the record at its source may have been updated since.
Is CVE-2026-45893 actively exploited?
CVE-2026-45893 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (2nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45893?
CVE-2026-45893 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-45893?
A fix for CVE-2026-45893 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-45893 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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