CVE-2026-23306

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-03-25. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

scsi: pm8001: Fix use-after-free in pm8001_queue_command()

Commit e29c47fe8946 ("scsi: pm8001: Simplify pm8001_task_exec()") refactors pm8001_queue_command(), however it introduces a potential cause of a double free scenario when it changes the function to return -ENODEV in case of phy down/device gone state.

In this path, pm8001_queue_command() updates task status and calls task_done to indicate to upper layer that the task has been handled. However, this also frees the underlying SAS task. A -ENODEV is then returned to the caller. When libsas sas_ata_qc_issue() receives this error value, it assumes the task wasn't handled/queued by LLDD and proceeds to clean up and free the task again, resulting in a double free.

Since pm8001_queue_command() handles the SAS task in this case, it should return 0 to the caller indicating that the task has been handled.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
2.6%
KEV
Not listed

Published

March 25, 2026

Last Modified

May 28, 2026

Advisory Details (6)

Auto-updated Jun 10, 2026
No patch confirmed yet.
generic

scsi: pm8001: Fix use-after-free in pm8001_queue_command() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ebbb852ffbc952b95ddb7e3872b67b3e74c6da47
generic

scsi: pm8001: Fix use-after-free in pm8001_queue_command() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c5dc39f8ae055520fd778b7fb0423f11586f15c4
generic

scsi: pm8001: Fix use-after-free in pm8001_queue_command() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8b00427317ba7b7ec91252b034009f638d0f311b
generic

scsi: pm8001: Fix use-after-free in pm8001_queue_command() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/824a7672e3540962d5c77d4c6666254d7aa6f0b3
generic

scsi: pm8001: Fix use-after-free in pm8001_queue_command() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/38353c26db28efd984f51d426eac2396d299cca7
generic

scsi: pm8001: Fix use-after-free in pm8001_queue_command() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/227ff4af00abc40b95123cc27ee8079069dcd8d7

Vendor Advisories for CVE-2026-23306(2)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
linuxKernel @ 6.1.167—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.

Data Freshness Timeline

(refreshed 11× in last 7d / 48× 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 127 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
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  1. 2026-06-29 14:06 UTCEPSS rescore
  2. 2026-06-29 05:02 UTCOSV refresh
  3. 2026-06-28 14:07 UTCEPSS rescore
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  5. 2026-06-28 04:56 UTCEPSS rescore
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  28. 2026-06-12 23:12 UTCEPSS rescore
  29. 2026-06-11 23:32 UTCEG score recompute
  30. 2026-06-11 23:32 UTCVendor advisory
  31. 2026-06-11 23:32 UTCGHSA enrichment
  32. 2026-06-11 14:00 UTCEPSS rescore
  33. 2026-06-10 22:18 UTCEPSS rescore
  34. 2026-06-10 18:26 UTCEG score recompute
  35. 2026-06-10 18:26 UTCVendor advisory
  36. 2026-06-10 18:26 UTCGHSA enrichment
  37. 2026-06-10 13:22 UTCEPSS rescore
  38. 2026-06-10 05:27 UTCEG score recompute
  39. 2026-06-10 05:27 UTCVendor advisory
  40. 2026-06-10 05:27 UTCGHSA enrichment
  41. 2026-06-09 15:58 UTCEG score recompute
  42. 2026-06-09 15:58 UTCVendor advisory
  43. 2026-06-09 15:58 UTCGHSA enrichment
  44. 2026-06-08 14:34 UTCEG score recompute
  45. 2026-06-08 14:34 UTCVendor advisory
  46. 2026-06-08 14:34 UTCGHSA enrichment
  47. 2026-06-08 14:17 UTCEPSS rescore
  48. 2026-06-08 14:17 UTCEPSS rescore
  49. 2026-06-08 01:35 UTCEG score recompute
  50. 2026-06-08 01:35 UTCVendor advisory
  51. 2026-06-08 01:35 UTCGHSA enrichment
  52. 2026-06-07 15:25 UTCEPSS rescore
  53. 2026-06-07 15:24 UTCEPSS rescore
  54. 2026-06-07 12:35 UTCEG score recompute
  55. 2026-06-07 12:35 UTCVendor advisory
  56. 2026-06-07 12:35 UTCGHSA enrichment
  57. 2026-06-06 13:47 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2026-23306?
CVE-2026-23306 is a high vulnerability published on March 25, 2026. In the Linux kernel, the following vulnerability has been resolved: scsi: pm8001: Fix use-after-free in pm8001queuecommand() Commit e29c47fe8946 ("scsi: pm8001: Simplify pm8001taskexec()") refactors pm8001queuecommand(), however it introduces a potential cause of a double free scenario when it…
When was CVE-2026-23306 disclosed?
CVE-2026-23306 was first published in the National Vulnerability Database on March 25, 2026, with the most recent update on May 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23306 actively exploited?
CVE-2026-23306 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-23306?
CVE-2026-23306 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-23306?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23306, 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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