CVE-2026-52912

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

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, ghsa, secondary
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

netfilter: nf_queue: hold bridge skb->dev while queued

br_pass_frame_up() rewrites skb->dev from the ingress port to the bridge master before queueing bridge LOCAL_IN packets. NFQUEUE only holds references on state.in/out and bridge physdevs, so a queued bridge packet can retain a freed bridge master in skb->dev until reinjection.

When the verdict is reinjected later, br_netif_receive_skb() re-enters the receive path with skb->dev still pointing at the freed bridge master, triggering a use-after-free.

Store skb->dev in the queue entry, hold a reference on it for the queue lifetime, and use the saved device when dropping queued packets during NETDEV_DOWN handling.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

June 24, 2026

Last Modified

September 8, 2026

Advisory Details (8)

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

netfilter: nf_queue: hold bridge skb->dev while queued - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e196115ec330a18de415bdb9f5071aa9f08e53ce
generic

netfilter: nf_queue: hold bridge skb->dev while queued - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a698ac8ab2561cf575d2d9f34095032651dd952e
generic

netfilter: nf_queue: hold bridge skb->dev while queued - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/950d809f154dca04e5fbe5d3c8b9c5e44769cd57
generic

netfilter: nf_queue: hold bridge skb->dev while queued - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3fb0f5c0f64162a8c3f25616a4f1e340b921737f
generic

netfilter: nf_queue: hold bridge skb->dev while queued - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3823c27099cfe2482299065814adbaa771be9644
generic

netfilter: nf_queue: hold bridge skb->dev while queued - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1e5e20031c5eee8d2e490a90ff4d6a2feecfc3be
generic

netfilter: nf_queue: hold bridge skb->dev while queued - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/19924bdd8a45ebc72a7b84c57fd63057d1dc75ac
generic

netfilter: nf_queue: hold bridge skb->dev while queued - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/15d464265120ab9818bd673af301deee09bedab2

Vendor Advisories for CVE-2026-52912(2)

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

Patch Availability(21)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-09-08ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-09-08ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-09-08ubuntu
ubuntulinux-virtual-6.8 (6.8.0-139.139) @ noble2026-09-08ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-09-08ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-09-08ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-09-08ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-09-08ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-09-08ubuntu
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-28.28) @ resolute2026-09-08ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-09-08ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-09-08ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-09-08ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-09-08ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-09-08ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-09-08ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-08ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1009.9) @ resolute2026-09-08ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-09-08ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-09-08ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-09-08ubuntu

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 (141 versions)7.0.12-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(21)

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 11× in last 7d / 92× 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 310 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-52912?
CVE-2026-52912 is a high vulnerability published on June 24, 2026. In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_queue: hold bridge skb->dev while queued brpassframe_up() rewrites skb->dev from the ingress port to the bridge master before queueing bridge LOCAL_IN packets. NFQUEUE only holds references on state.in/out and bridge…
When was CVE-2026-52912 disclosed?
CVE-2026-52912 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52912 actively exploited?
CVE-2026-52912 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 96.0% of all scored CVEs.
What is the CVSS score of CVE-2026-52912?
CVE-2026-52912 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-52912?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52912, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-52912

Explore →

Is Your Infrastructure Affected by CVE-2026-52912?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs