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TI-2025-42284 Aliases CVE-2025-68817GHSA-77h3-779x-v4x3

ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency

Priority MEDIUM 42CWE-416Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in ksmbd_tree_connect_put under concurrency Under high concurrency, A tree-connection object (tcon) is freed on a disconnect path while another path still holds a reference and later executes *_put()/write on it.

Why it matters now

EPSS 0.00448 39th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.15.199, 6.1.160, 6.6.120 +3

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.15.145 to before 5.15.199; 6.1.71 to before 6.1.1605.15.199, 6.1.160Patch availableCNA
LinuxLinux6.6 and later5.15.199, 6.1.160, 6.6.120, 6.12.64, 6.18.3, 6.19Patch availableCNA
  • Linux VendorLinux Affected 5.15.145 to before 5.15.199; 6.1.71 to before 6.1.160 Fixed in 5.15.199, 6.1.160 Patch available CNA
  • Linux VendorLinux Affected 6.6 and later Fixed in 5.15.199, 6.1.160, 6.6.120, 6.12.64, 6.18.3, 6.19 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.15.145 to before 5.15.199; 6.1.71 to before 6.1.160; 6.6.1 to before 6.6.120; 6.7 to before 6.12.64; 6.13 to before 6.18.3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.6:-:*:*:*:*:*:*6.6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.6:rc5:*:*:*:*:*:*6.6 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.6:rc6:*:*:*:*:*:*6.6 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.6:rc7:*:*:*:*:*:*6.6 rc7VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.15.145 to before 5.15.199; 6.1.71 to before 6.1.160; 6.6.1 to before 6.6.120; 6.7 to before 6.12.64; 6.13 to before 6.18.3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.6:-:*:*:*:*:*:* Versions 6.6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.6:rc5:*:*:*:*:*:* Versions 6.6 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.6:rc6:*:*:*:*:*:* Versions 6.6 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.6:rc7:*:*:*:*:*:* Versions 6.6 rc7 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.15.199, 6.1.160
  • Fix · CNA Linux (Linux) Fixed in 5.15.199, 6.1.160, 6.6.120, 6.12.64, 6.18.3, 6.19

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-2025-68817
  2. 2026-10-03 Alias added: GHSA-77h3-779x-v4x3

References

Patch 6

  • 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