CVE-2025-39809

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2025-09-16. NVD baseline CVSS 7.8; sources differ by 0.0.

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

HID: intel-thc-hid: intel-quicki2c: Fix ACPI dsd ICRS/ISUB length

The QuickI2C ACPI _DSD methods return ICRS and ISUB data with a trailing byte, making the actual length is one more byte than the structs defined.

It caused stack-out-of-bounds and kernel crash:

kernel: BUG: KASAN: stack-out-of-bounds in quicki2c_acpi_get_dsd_property.constprop.0+0x111/0x1b0 [intel_quicki2c] kernel: Write of size 12 at addr ffff888106d1f900 by task kworker/u33:2/75 kernel: kernel: CPU: 3 UID: 0 PID: 75 Comm: kworker/u33:2 Not tainted 6.16.0+ #3 PREEMPT(voluntary) kernel: Workqueue: async async_run_entry_fn kernel: Call Trace: kernel: kernel: dump_stack_lvl+0x76/0xa0 kernel: print_report+0xd1/0x660 kernel: ? __pfx__raw_spin_lock_irqsave+0x10/0x10 kernel: ? __kasan_slab_free+0x5d/0x80 kernel: ? kasan_addr_to_slab+0xd/0xb0 kernel: kasan_report+0xe1/0x120 kernel: ? quicki2c_acpi_get_dsd_property.constprop.0+0x111/0x1b0 [intel_quicki2c] kernel: ? quicki2c_acpi_get_dsd_property.constprop.0+0x111/0x1b0 [intel_quicki2c] kernel: kasan_check_range+0x11c/0x200 kernel: __asan_memcpy+0x3b/0x80 kernel: quicki2c_acpi_get_dsd_property.constprop.0+0x111/0x1b0 [intel_quicki2c] kernel: ? __pfx_quicki2c_acpi_get_dsd_property.constprop.0+0x10/0x10 [intel_quicki2c] kernel: quicki2c_get_acpi_resources+0x237/0x730 [intel_quicki2c] [...] kernel: kernel: kernel: The buggy address belongs to stack of task kworker/u33:2/75 kernel: and is located at offset 48 in frame: kernel: quicki2c_get_acpi_resources+0x0/0x730 [intel_quicki2c] kernel: kernel: This frame has 3 objects: kernel: [32, 36) 'hid_desc_addr' kernel: [48, 59) 'i2c_param' kernel: [80, 224) 'i2c_config'

ACPI DSD methods return:

\_SB.PC00.THC0.ICRS Buffer 000000003fdc947b 001 Len 0C = 0A 00 80 1A 06 00 00 00 00 00 00 00 \_SB.PC00.THC0.ISUB Buffer 00000000f2fcbdc4 001 Len 91 = 00 00 00 00 00 00 00 00 00 00 00 00

Adding reserved padding to quicki2c_subip_acpi_parameter/config.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

September 16, 2025

Last Modified

August 5, 2026

Advisory Details (2)

Auto-updated Jul 30, 2026
No patch confirmed yet.
generic

HID: intel-thc-hid: intel-quicki2c: Fix ACPI dsd ICRS/ISUB length - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4adce86d4b13d15dec7810967839b931b1598700
generic

HID: intel-thc-hid: intel-quicki2c: Fix ACPI dsd ICRS/ISUB length - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/1db9df89a213318a48d958385dc1b17b379dc32b

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (6.14.0-36.36~24.04.1) @ noble2026-05-29ubuntu
ubuntulinux-tools-realtime-hwe-24.04-edge (6.14.0-1016.16~24.04.1) @ noble2026-05-29ubuntu
ubuntulinux-tools-oracle-edge (6.14.0-1017.17~24.04.1) @ noble2026-05-29ubuntu
ubuntulinux-tools-raspi-6.14 (6.14.0-1018.18) @ plucky2026-05-29ubuntu
ubuntulinux-tools-azure-6.14 (6.14.0-1017.17) @ plucky2026-05-29ubuntu
linuxKernel @ 6.16.5—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.

All Vendor Advisories

(5)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 8× 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 108 total refreshes for this CVE.

  1. 2026-08-06 13:46 UTCEPSS rescore
  2. 2026-08-05 12:58 UTCEG score recompute
  3. 2026-08-05 12:58 UTCVendor advisory
  4. 2026-08-05 12:57 UTCGHSA enrichment
  5. 2026-08-04 15:09 UTCEPSS rescore
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  11. 2026-07-30 06:53 UTCEG score recompute
  12. 2026-07-30 06:53 UTCGHSA enrichment
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  19. 2026-07-23 19:41 UTCOSV refresh
  20. 2026-07-23 02:55 UTCEG score recompute
  21. 2026-07-22 14:07 UTCEPSS rescore
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  24. 2026-07-20 17:07 UTCEPSS rescore
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  1. 2026-07-19 14:30 UTCEPSS rescore
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  19. 2026-07-07 13:45 UTCEPSS rescore
  20. 2026-07-06 16:27 UTCEPSS rescore
  21. 2026-07-06 16:27 UTCEPSS rescore
  22. 2026-07-06 14:11 UTCOSV refresh
  23. 2026-07-06 02:23 UTCEPSS rescore
  24. 2026-07-04 06:30 UTCEPSS rescore
  25. 2026-07-01 15:06 UTCEPSS rescore
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  27. 2026-06-30 23:22 UTCEPSS rescore
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  49. 2026-06-19 19:25 UTCEPSS rescore
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  51. 2026-06-18 17:52 UTCEPSS rescore
  52. 2026-06-18 17:52 UTCEPSS rescore
  53. 2026-06-18 02:35 UTCOSV refresh
  54. 2026-06-17 17:52 UTCEPSS rescore
  55. 2026-06-16 17:52 UTCEPSS rescore
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  66. 2026-06-06 13:47 UTCEPSS rescore
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  74. 2026-06-02 20:12 UTCEPSS rescore
  75. 2026-06-01 13:51 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2025-39809?
CVE-2025-39809 is a high vulnerability published on September 16, 2025. In the Linux kernel, the following vulnerability has been resolved: HID: intel-thc-hid: intel-quicki2c: Fix ACPI dsd ICRS/ISUB length The QuickI2C ACPI _DSD methods return ICRS and ISUB data with a trailing byte, making the actual length is one more byte than the structs defined. It caused…
When was CVE-2025-39809 disclosed?
CVE-2025-39809 was first published in the National Vulnerability Database on September 16, 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-2025-39809 actively exploited?
CVE-2025-39809 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 95.8% of all scored CVEs.
What is the CVSS score of CVE-2025-39809?
CVE-2025-39809 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2025-39809?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-39809, 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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