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TI-2023-03613 Aliases CVE-2023-3865GHSA-mr68-gqxj-cfm9

ksmbd: fix out-of-bound read in smb2_write

Priority LOW 36CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bound read in smb2_write ksmbd_smb2_check_message doesn't validate hdr->NextCommand. If ->NextCommand is bigger than Offset + Length of smb2 write, It will allow oversized smb2 write length. It will cause OOB read in smb2_write.

Why it matters now

EPSS 0.00649 51st 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: Important. 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-2023-3865
  2. 2026-10-03 Alias added: GHSA-mr68-gqxj-cfm9
  3. 2026-10-30 EPSS moved to the 50th–90th percentile

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