CVE-2026-52920

HIGHPre-NVD 8.38.3—
EchelonGraph scoreMEDIUM confidence

Score 8.3 from GitHub Security Advisory (severity: HIGH) published 2026-06-24. the CNA's CVSS baseline 8.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — Patch released this week
8.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.3Exploit: None knownExposed: 0

A fix is available — apply it.

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

netfilter: xt_policy: fix strict mode inbound policy matching

match_policy_in() walks sec_path entries from the last transform to the first one, but strict policy matching needs to consume info->pol[] in the same forward order as the rule layout.

Derive the strict-match policy position from the number of transforms already consumed so that multi-element inbound rules are matched consistently.

CVSS v3
8.3
EG Score
8.3(medium)
EG Risk
42(Track)
EG Risk 42/100SSVC: 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
Severity83% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

June 24, 2026

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Jun 28, 2026
No patch confirmed yet.
generic

netfilter: xt_policy: fix strict mode inbound policy matching - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fc1c518bb1f054831ecabb32da9b8e1dff9699c6
generic

netfilter: xt_policy: fix strict mode inbound policy matching - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f98b7f85e04b40e28b08c461ded0cc79f14f5509
generic

netfilter: xt_policy: fix strict mode inbound policy matching - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/eb323f7b82d2e2f638de0cc2a177803eb20e0707
generic

netfilter: xt_policy: fix strict mode inbound policy matching - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b130a6eefa02bd4d475f2f059da8bcfb3e7d18d9
generic

netfilter: xt_policy: fix strict mode inbound policy matching - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/938867e870fb5471bb16f442aeac81326e05bf65
generic

netfilter: xt_policy: fix strict mode inbound policy matching - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/82664d0f1ba25e4f9a71994954abae24c60f4067
generic

netfilter: xt_policy: fix strict mode inbound policy matching - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4b2b4d7d4e203c92db8966b163edfacb1f0e1e29
generic

netfilter: xt_policy: fix strict mode inbound policy matching - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/392cc1d8408b5665215c1e9290bbf0f92339b043

Vendor Advisories for CVE-2026-52920(3)

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

Patch Availability(30)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-08-28ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-28ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-28ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-28ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-28ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16~24.04.1) @ noble2026-08-28ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-28ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-28ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-28ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-28ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-08-28ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-28ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-08-28ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-28ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-28ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-28ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-08-28ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-28ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1058.61) @ noble2026-08-28ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-28ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-28ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-28ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-28ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-28ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-28ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-28ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-28ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-28ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-28ubuntu
redhatkernel-0:5.14.0-687.42.1.el9_82026-08-26redhat

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 rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (54 versions)5.10.259-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.174-1~deb11u1 (20 versions)6.1.176-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (137 versions)7.0.10-1—

Additional Vendor Advisories

(23)

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 18× in last 7d / 149× 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 275 total refreshes for this CVE.

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

Related CVEs(same vendor)

Frequently asked(5)

What is CVE-2026-52920?
CVE-2026-52920 is a high vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_policy: fix strict mode inbound policy matching matchpolicyin() walks sec_path entries from the last transform to the first one, but strict policy matching needs to consume info->pol[] in the same forward order as the…
When was CVE-2026-52920 disclosed?
CVE-2026-52920 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52920 actively exploited?
CVE-2026-52920 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 78.0% of all scored CVEs.
What is the CVSS score of CVE-2026-52920?
CVE-2026-52920 has a CVSS v4.0 base score of 8.3 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-52920?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52920, 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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