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TI-2023-03614 Aliases CVE-2023-3866GHSA-hwfv-6r5j-7xm3

ksmbd: validate session id and tree id in the compound request

Priority MEDIUM 47CWE-476Published · Updated

Key facts

Attack vector
Network
Privileges required
None
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 · CNA. Fix status from CNA. Impact type from CWE-476.

Summary

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate session id and tree id in the compound request This patch validate session id and tree id in compound request. If first operation in the compound is SMB2 ECHO request, ksmbd bypass session and tree validation. So work->sess and work->tcon could be NULL. If secound request in the compound access work->sess or tcon, It cause NULL pointer dereferecing error.

Why it matters now

EPSS 0.12645 96th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.15.121, 6.1.36, 6.3.10 +1

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.15 and later5.15.121, 6.1.36, 6.3.10, 6.4Patch availableCNA
  • Linux VendorLinux Affected 5.15 and later Fixed in 5.15.121, 6.1.36, 6.3.10, 6.4 Patch available CNA

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.15 to before 5.15.121; 5.16 to before 6.1.36; 6.2 to before 6.3.10VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:*6.4 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.4:rc2:*:*:*:*:*:*6.4 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.4:rc3:*:*:*:*:*:*6.4 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.4:rc4:*:*:*:*:*:*6.4 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.4:rc5:*:*:*:*:*:*6.4 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.4:rc6:*:*:*:*:*:*6.4 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.4:rc7:*:*:*:*:*:*6.4 rc7VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.15 to before 5.15.121; 5.16 to before 6.1.36; 6.2 to before 6.3.10 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.4:rc1:*:*:*:*:*:* Versions 6.4 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.4:rc2:*:*:*:*:*:* Versions 6.4 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.4:rc3:*:*:*:*:*:* Versions 6.4 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.4:rc4:*:*:*:*:*:* Versions 6.4 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.4:rc5:*:*:*:*:*:* Versions 6.4 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.4:rc6:*:*:*:*:*:* Versions 6.4 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.4:rc7:*:*:*:*:*:* Versions 6.4 rc7 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.15.121, 6.1.36, 6.3.10, 6.4

Vendor assessments

Red Hat

Red Hat rating: Moderate. 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-2023-3866
  2. 2026-10-03 Alias added: GHSA-hwfv-6r5j-7xm3

References

Patch 4

  • 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