CVE-2026-23216

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-02-18. 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:

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()

In iscsit_dec_conn_usage_count(), the function calls complete() while holding the conn->conn_usage_lock. As soon as complete() is invoked, the waiter (such as iscsit_close_connection()) may wake up and proceed to free the iscsit_conn structure.

If the waiter frees the memory before the current thread reaches spin_unlock_bh(), it results in a KASAN slab-use-after-free as the function attempts to release a lock within the already-freed connection structure.

Fix this by releasing the spinlock before calling complete().

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
2%
KEV
Not listed

Published

February 18, 2026

Last Modified

June 17, 2026

Advisory Details (7)

Auto-updated Aug 2, 2026
No patch confirmed yet.
generic

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ba684191437380a07b27666eb4e72748be1ea201
generic

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9411a89e9e7135cc459178fa77a3f1d6191ae903
generic

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8518f072fc92921418cd9ed4268dd4f3e9a8fd75
generic

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/73b487d44bf4f92942629d578381f89c326ff77f
generic

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/48fe983e92de2c59d143fe38362ad17ba23ec7f3
generic

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3835e49e146a4e6e7787b29465f1a23379b6ec44
generic

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/275016a551ba1a068a3bd6171b18611726b67110

Vendor Advisories for CVE-2026-23216(13)

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

Patch Availability(14)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-rt-0:4.18.0-553.139.1.rt7.480.el8_102026-07-07redhat
redhatkernel-0:4.18.0-553.139.1.el8_102026-06-30redhat
redhatkernel-rt-0:5.14.0-284.176.1.rt14.461.el9_22026-06-17redhat
redhatkernel-0:5.14.0-284.176.1.el9_22026-06-17redhat
redhatkernel-0:4.18.0-305.194.1.el8_42026-06-17redhat
redhatkernel-0:4.18.0-372.195.1.el8_62026-06-12redhat
redhatkernel-0:5.14.0-687.15.1.el9_82026-06-11redhat
redhatkernel-0:5.14.0-570.120.1.el9_62026-06-11redhat
redhatkernel-0:5.14.0-427.129.1.el9_42026-06-04redhat
redhatkernel-0:4.18.0-477.145.1.el8_82026-06-04redhat
redhatkernel-rt-0:3.10.0-1160.148.1.rt56.1300.el72026-04-27redhat
redhatkernel-0:3.10.0-1160.148.1.el72026-04-22redhat
redhatkernel-0:6.12.0-55.69.1.el10_02026-04-20redhat
linuxKernel @ 5.10.250—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.

Additional Vendor Advisories

(12)

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 / 41× 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.

  1. 2026-08-06 03:36 UTCEG score recompute
  2. 2026-08-06 03:36 UTCVendor advisory
  3. 2026-08-06 03:35 UTCGHSA enrichment
  4. 2026-08-04 15:10 UTCEPSS rescore
  5. 2026-08-04 10:38 UTCEPSS rescore
  6. 2026-08-03 10:35 UTCEPSS rescore
  7. 2026-08-02 20:21 UTCEG score recompute
  8. 2026-08-02 20:21 UTCVendor advisory
  9. 2026-08-02 20:21 UTCGHSA enrichment
  10. 2026-08-02 02:26 UTCEPSS rescore
  11. 2026-08-01 04:15 UTCEPSS rescore
  12. 2026-07-30 01:30 UTCEPSS rescore
  13. 2026-07-27 14:13 UTCEPSS rescore
  14. 2026-07-25 14:17 UTCEPSS rescore
  15. 2026-07-25 14:17 UTCEPSS rescore
  16. 2026-07-24 14:17 UTCEPSS rescore
  17. 2026-07-23 03:06 UTCEG score recompute
  18. 2026-07-22 14:08 UTCEPSS rescore
  19. 2026-07-20 17:08 UTCEPSS rescore
  20. 2026-07-20 14:02 UTCOSV refresh
  21. 2026-07-19 14:31 UTCEPSS rescore
  22. 2026-07-19 14:31 UTCEPSS rescore
  23. 2026-07-19 02:29 UTCEPSS rescore
  24. 2026-07-19 02:28 UTCEPSS rescore
  25. 2026-07-18 10:04 UTCEPSS rescore
Show 55 more
  1. 2026-07-18 10:04 UTCEPSS rescore
  2. 2026-07-16 17:03 UTCEPSS rescore
  3. 2026-07-16 17:03 UTCEPSS rescore
  4. 2026-07-15 16:57 UTCEPSS rescore
  5. 2026-07-15 16:57 UTCEPSS rescore
  6. 2026-07-15 02:00 UTCEPSS rescore
  7. 2026-07-15 02:00 UTCEPSS rescore
  8. 2026-07-13 22:30 UTCEPSS rescore
  9. 2026-07-13 06:13 UTCEPSS rescore
  10. 2026-07-13 06:13 UTCEPSS rescore
  11. 2026-07-12 05:46 UTCEPSS rescore
  12. 2026-07-12 05:46 UTCEPSS rescore
  13. 2026-07-09 19:10 UTCEPSS rescore
  14. 2026-07-08 15:15 UTCEPSS rescore
  15. 2026-07-08 15:15 UTCEPSS rescore
  16. 2026-07-07 13:46 UTCEPSS rescore
  17. 2026-07-06 16:27 UTCEPSS rescore
  18. 2026-07-06 16:27 UTCEPSS rescore
  19. 2026-07-06 02:23 UTCEPSS rescore
  20. 2026-07-06 02:23 UTCEPSS rescore
  21. 2026-07-04 06:31 UTCEPSS rescore
  22. 2026-07-04 06:31 UTCEPSS rescore
  23. 2026-07-03 08:56 UTCOSV refresh
  24. 2026-07-01 15:06 UTCEPSS rescore
  25. 2026-07-01 15:06 UTCEPSS rescore
  26. 2026-06-30 23:22 UTCEPSS rescore
  27. 2026-06-30 23:22 UTCEPSS rescore
  28. 2026-06-29 14:06 UTCEPSS rescore
  29. 2026-06-28 14:07 UTCEPSS rescore
  30. 2026-06-28 14:07 UTCEPSS rescore
  31. 2026-06-28 04:56 UTCEPSS rescore
  32. 2026-06-28 04:56 UTCEPSS rescore
  33. 2026-06-27 03:08 UTCEPSS rescore
  34. 2026-06-25 13:49 UTCEPSS rescore
  35. 2026-06-25 13:49 UTCEPSS rescore
  36. 2026-06-23 21:33 UTCEPSS rescore
  37. 2026-06-23 21:32 UTCEPSS rescore
  38. 2026-06-22 14:25 UTCEPSS rescore
  39. 2026-06-22 14:25 UTCEPSS rescore
  40. 2026-06-21 14:56 UTCEPSS rescore
  41. 2026-06-21 14:56 UTCEPSS rescore
  42. 2026-06-21 01:59 UTCEPSS rescore
  43. 2026-06-21 01:59 UTCEPSS rescore
  44. 2026-06-19 19:25 UTCEPSS rescore
  45. 2026-06-19 19:25 UTCEPSS rescore
  46. 2026-06-18 17:52 UTCEPSS rescore
  47. 2026-06-17 17:53 UTCEPSS rescore
  48. 2026-06-17 17:53 UTCEPSS rescore
  49. 2026-06-16 17:52 UTCEPSS rescore
  50. 2026-06-15 17:48 UTCEPSS rescore
  51. 2026-06-14 23:18 UTCEPSS rescore
  52. 2026-06-14 23:15 UTCEG score recompute
  53. 2026-06-14 23:15 UTCVendor advisory
  54. 2026-06-14 23:14 UTCGHSA enrichment
  55. 2026-06-14 23:13 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-23216?
CVE-2026-23216 is a high vulnerability published on February 18, 2026. In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsitdecconnusagecount() In iscsitdecconnusagecount(), the function calls complete() while holding the conn->connusagelock. As soon as complete() is invoked, the waiter (such as…
When was CVE-2026-23216 disclosed?
CVE-2026-23216 was first published in the National Vulnerability Database on February 18, 2026, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23216 actively exploited?
CVE-2026-23216 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 98.1% of all scored CVEs.
What is the CVSS score of CVE-2026-23216?
CVE-2026-23216 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-23216?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23216, 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

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