CVE-2025-37823

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-05-08. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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:

net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too

Similarly to the previous patch, we need to safe guard hfsc_dequeue() too. But for this one, we don't have a reliable reproducer.

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
10%
KEV
Not listed

Published

May 8, 2025

Last Modified

August 5, 2026

Advisory Details (10)

Auto-updated Jul 30, 2026
Patch available.
generic Patch Available

[SECURITY] [DLA 4193-1] linux-6.1 security update

https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
generic Patch Available

[SECURITY] [DLA 4178-1] linux security update

https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
generic

net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/da7936518996d290e2fcfcaf6cd7e15bfd87804a
generic

net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c6f035044104c6ff656f4565cd22938dc892528c
generic

net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c6936266f8bf98a53f28ef9a820e6a501e946d09
generic

net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/76c4c22c2437d3d3880efc0f62eca06ef078d290
generic

net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6ccbda44e2cc3d26fd22af54c650d6d5d801addf
generic

net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/68f256305ceb426d545a0dc31f83c2ab1d211a1e
generic

net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2f46d14919c39528c6e540ebc43f90055993eedc
generic

net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/11bccb054c1462fb069219f8e98e97a5a730758e

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-realtime-5.15 (5.15.0.1088.92) @ jammy2026-07-30ubuntu
ubuntulinux-tools-azure-edge (5.15.0.1094.103~20.04.1) @ focal2026-07-30ubuntu
ubuntulinux-tools-realtime-hwe-22.04 (6.8.1-1041.42~22.04.1) @ jammy2026-07-30ubuntu
ubuntulinux-virtual-6.8 (6.8.0-100.100) @ noble2026-07-30ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1094.79) @ jammy2026-07-30ubuntu
ubuntulinux-tools-gcp-fips-5.15 (5.15.0.1087.77) @ jammy2026-07-30ubuntu
ubuntulinux-tools-raspi-nolpae (5.15.0.1083.81) @ jammy2026-07-30ubuntu
ubuntulinux-tools-intel-iotg-edge (5.15.0.1083.89~20.04.1) @ focal2026-07-30ubuntu
ubuntulinux-xilinx-zynqmp-tools-host (5.15.0-1052.56) @ jammy2026-07-30ubuntu
ubuntulinux-tools-kvm-5.15 (5.15.0.1084.80) @ jammy2026-07-30ubuntu
ubuntulinux-tools-azure-lts-22.04 (5.15.0.1094.92) @ jammy2026-07-30ubuntu
ubuntulinux-tools-gcp-edge (6.8.0-1047.50~22.04.2) @ jammy2026-07-30ubuntu
ubuntulinux-tools-realtime-6.8.1 (6.8.1-1041.42) @ noble2026-07-30ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-100.100+fips1) @ noble2026-07-30ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1047.50+fips1) @ noble2026-07-30ubuntu
ubuntulinux-tools-oracle-lts-24.04 (6.8.0-1043.44) @ noble2026-07-30ubuntu
ubuntulinux-tools-gke-64k-6.8 (6.8.0-1043.48) @ noble2026-07-30ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-100.100~22.04.1) @ jammy2026-07-30ubuntu
ubuntulinux-tools-lowlatency-hwe-20.04-edge (6.8.0-100.100.1) @ noble2026-07-30ubuntu
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-22.22) @ plucky2026-07-30ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1046.49.1) @ noble2026-07-30ubuntu
redhatkernel-0:3.10.0-1160.145.1.el72026-01-19redhat
redhatkernel-rt-0:3.10.0-1160.145.1.rt56.1297.el72026-01-19redhat
redhatkernel-0:5.14.0-70.149.1.el9_02025-10-15redhat
redhatkernel-rt-0:5.14.0-70.149.1.rt21.221.el9_02025-10-15redhat
redhatkernel-0:5.14.0-284.142.1.el9_22025-10-13redhat
redhatkernel-0:5.14.0-427.92.1.el9_42025-10-02redhat
redhatkernel-0:4.18.0-553.77.1.el8_102025-09-29redhat
redhatkernel-0:6.12.0-55.30.1.el10_02025-09-02redhat
redhatkernel-0:5.14.0-570.39.1.el9_62025-09-02redhat
linuxKernel @ 5.4.293osv

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 (45 versions)5.10.237-1
linux-6.16.1.106-3~deb11u1 ... 6.1.129-1~deb11u1 (7 versions)6.1.137-1~deb11u1
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (38 versions)6.1.137-1
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.27-1
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.27-1

Weakness Classification(1)

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

Additional Vendor Advisories

(17)

Data Freshness Timeline

(refreshed 5× in last 7d / 26× 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 138 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2025-37823?
CVE-2025-37823 is a high vulnerability published on May 8, 2025. In the Linux kernel, the following vulnerability has been resolved: netsched: hfsc: Fix a potential UAF in hfscdequeue() too Similarly to the previous patch, we need to safe guard hfsc_dequeue() too. But for this one, we don't have a reliable reproducer.
When was CVE-2025-37823 disclosed?
CVE-2025-37823 was first published in the National Vulnerability Database on May 8, 2025, 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-2025-37823 actively exploited?
CVE-2025-37823 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 89.8% of all scored CVEs.
What is the CVSS score of CVE-2025-37823?
CVE-2025-37823 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2025-37823?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-37823, 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-2025-37823

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