CVE-2026-23269

HIGHNVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-03-18. NVD baseline CVSS 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.1Exploit: NoneExposed: 0

A fix is available — apply it.

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

apparmor: validate DFA start states are in bounds in unpack_pdb

Start states are read from untrusted data and used as indexes into the DFA state tables. The aa_dfa_next() function call in unpack_pdb() will access dfa->tables[YYTD_ID_BASE][start], and if the start state exceeds the number of states in the DFA, this results in an out-of-bound read.

================================================================== BUG: KASAN: slab-out-of-bounds in aa_dfa_next+0x2a1/0x360 Read of size 4 at addr ffff88811956fb90 by task su/1097 ...

Reject policies with out-of-bounds start states during unpacking to prevent the issue.

CVSS v3
7.1
EG Score
7.1(medium)
EPSS
3.0%
KEV
Not listed

Published

March 18, 2026

Last Modified

May 29, 2026

References (9)

Vendor Advisories for CVE-2026-23269(2)

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

Patch Availability(15)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-raspi-nolpae (5.15.0.1097.95) @ jammy2026-06-11ubuntu
ubuntulinux-tools-oem-6.17 (6.17.0-1017.17) @ noble2026-06-11ubuntu
ubuntulowlatency-4.15 (4.15.0-143) @ xenial2026-06-11ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1109.94) @ jammy2026-06-11ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1109.107) @ jammy2026-06-11ubuntu
ubuntulinux-tools-azure-edge (5.4.0.1161.167~18.04.1) @ bionic2026-06-11ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1052.58+fips1) @ noble2026-06-11ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1096.100) @ jammy2026-06-11ubuntu
ubuntulinux-tools-raspi2-hwe-18.04-edge (5.4.0.1139.170) @ focal2026-06-11ubuntu
ubuntulinux-tools-bluefield-5.4 (5.4.0.1116.112) @ focal2026-06-11ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1110.119~20.04.1) @ focal2026-06-11ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1029.30) @ noble2026-06-11ubuntu
ubuntulinux-virtual-hwe-16.04-edge (4.15.0.249.261~16.04.1) @ xenial2026-06-11ubuntu
ubuntulinux-tools-oracle (4.15.0.1153.164~16.04.1) @ xenial2026-06-11ubuntu
linuxKernel @ 6.6.130—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.

Weakness Classification(1)

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

Additional Vendor Advisories

(14)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 7× in last 7d / 43× 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 115 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-23269?
CVE-2026-23269 is a high vulnerability published on March 18, 2026. In the Linux kernel, the following vulnerability has been resolved: apparmor: validate DFA start states are in bounds in unpack_pdb Start states are read from untrusted data and used as indexes into the DFA state tables. The aadfanext() function call in unpack_pdb() will access…
When was CVE-2026-23269 disclosed?
CVE-2026-23269 was first published in the National Vulnerability Database on March 18, 2026, with the most recent update on May 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23269 actively exploited?
CVE-2026-23269 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-23269?
CVE-2026-23269 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-23269?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23269, 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.

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