CVE-2026-63798

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-19. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove

The driver allocates domain generic chips using irq_alloc_domain_generic_chips() during probe and sets up chained handlers using irq_set_chained_handler_and_data(). However, on driver removal, the generic chips are not freed and the chained handlers are not removed.

The generic chips remain on the global gc_list and may later be accessed by generic interrupt chip suspend, resume, or shutdown callbacks after the driver has been removed, potentially resulting in a use-after-free and kernel crash.

The chained handlers that were installed in probe for peripheral and syswake interrupts are also left dangling, which can lead to spurious interrupts accessing freed memory.

Fix these issues by:

  • Setting IRQ_DOMAIN_FLAG_DESTROY_GC flag in domain->flags, so the
core code automatically removes generic chips when irq_domain_remove() is called
  • Clearing all chained handlers with NULL in pdc_intc_remove()

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

July 19, 2026

Last Modified

August 17, 2026

Advisory Details (8)

Auto-updated Jul 29, 2026
No patch confirmed yet.
generic

irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c2c7733101bb8c0b29ac9ee41073eaf602821a59
generic

irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b3a3831b2eb884641906fc5e46207b205b6aea13
generic

irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/83d7ec14b0938ad8cae008058fd6f912f4a9a312
generic

irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8176773dfceae7978b01c20b233693e072053700
generic

irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/44567537a2623dcd2b4018a7f043cf8069579e5d
generic

irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/41826e5297e67cd96a0a46fde06a5069a8ce436a
generic

irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/37738fdf2ab1e504d1c63ce5bc0aeb6452d8f057
generic

irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0405a65e4ebd9eac13a765f9f02ac05851ca5421

Vendor Advisories for CVE-2026-63798(2)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-31.31~24.04.1) @ noble2026-09-07ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1013.13) @ resolute2026-09-07ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-07ubuntu

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 (55 versions)5.10.262-1—
linux-6.16.1.106-3~deb11u1 ... 6.1.176-1~deb11u1 (21 versions)6.1.177-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (54 versions)6.1.177-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.95-1~bpo12+1 (29 versions)6.12.95-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.1~rc7-1~exp1 (156 versions)7.1.3-1—

Weakness Classification(1)

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

All Vendor Advisories

(3)

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 11× in last 7d / 61× 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 128 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-63798?
CVE-2026-63798 is a medium vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove The driver allocates domain generic chips using irqallocdomaingenericchips() during probe and sets up chained handlers using…
When was CVE-2026-63798 disclosed?
CVE-2026-63798 was first published in the National Vulnerability Database on July 19, 2026, with the most recent update on August 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63798 actively exploited?
CVE-2026-63798 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 97.4% of all scored CVEs.
What is the CVSS score of CVE-2026-63798?
CVE-2026-63798 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-63798?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63798, 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-2026-63798

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