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TI-2026-18665 Aliases CVE-2026-23228GHSA-j6h2-wr53-6vcg

smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection()

Priority LOW 24CWE-401Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-401.

Summary

In the Linux kernel, the following vulnerability has been resolved: smb: server: fix leak of active_num_conn in ksmbd_tcp_new_connection() On kthread_run() failure in ksmbd_tcp_new_connection(), the transport is freed via free_transport(), which does not decrement active_num_conn, leaking this counter. Replace free_transport() with ksmbd_tcp_disconnect().

Why it matters now

EPSS 0.00139 3rd percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.15.201, 6.1.164, 6.6.125 +4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.15.91 to before 5.15.201; 6.1.9 to before 6.1.1645.15.201, 6.1.164Patch availableCNA
LinuxLinux6.2 and later5.15.201, 6.1.164, 6.6.125, 6.12.72, 6.18.11, 6.19.1, 7.0Patch availableCNA
  • Linux VendorLinux Affected 5.15.91 to before 5.15.201; 6.1.9 to before 6.1.164 Fixed in 5.15.201, 6.1.164 Patch available CNA
  • Linux VendorLinux Affected 6.2 and later Fixed in 5.15.201, 6.1.164, 6.6.125, 6.12.72, 6.18.11, 6.19.1, 7.0 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.15.91 to before 5.15.201; 6.1.9 to before 6.1.164; 6.2.1 to before 6.6.125; 6.7 to before 6.12.72; 6.13 to before 6.18.11; 6.19 to before 6.19.1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.2:-:*:*:*:*:*:*6.2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:*6.2 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.2:rc7:*:*:*:*:*:*6.2 rc7VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.2:rc8:*:*:*:*:*:*6.2 rc8VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.15.91 to before 5.15.201; 6.1.9 to before 6.1.164; 6.2.1 to before 6.6.125; 6.7 to before 6.12.72; 6.13 to before 6.18.11; 6.19 to before 6.19.1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.2:-:*:*:*:*:*:* Versions 6.2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:* Versions 6.2 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.2:rc7:*:*:*:*:*:* Versions 6.2 rc7 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.2:rc8:*:*:*:*:*:* Versions 6.2 rc8 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.15.201, 6.1.164
  • Fix · CNA Linux (Linux) Fixed in 5.15.201, 6.1.164, 6.6.125, 6.12.72, 6.18.11, 6.19.1, 7.0

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 5 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-23228
  2. 2026-10-03 Alias added: GHSA-j6h2-wr53-6vcg

References

Patch 7

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences