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TI-2026-33697 Aliases CVE-2026-45972GHSA-6w7x-q46j-6x9r

smb: client: fix potential UAF and double free in smb2_open_file()

Priority MEDIUM 49CWE-825Published · 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
Partial Red Hat: 2 without a fix

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

Summary

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF and double free in smb2_open_file() Zero out @err_iov and @err_buftype before retrying SMB2_open() to prevent an UAF bug if @data != NULL, otherwise a double free.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00329 26th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.165, 6.6.128, 6.12.75 +3Red Hat: 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux6.1.163 to before 6.1.165; 6.6.124 to before 6.6.128; 6.12.70 to before 6.12.75; 6.18.10 to before 6.18.146.1.165, 6.6.128, 6.12.75, 6.18.14Patch availableCNA
LinuxLinux6.19 and later6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4, 7.0Patch availableCNA
  • Linux VendorLinux Affected 6.1.163 to before 6.1.165; 6.6.124 to before 6.6.128; 6.12.70 to before 6.12.75; 6.18.10 to before 6.18.14 Fixed in 6.1.165, 6.6.128, 6.12.75, 6.18.14 Patch available CNA
  • Linux VendorLinux Affected 6.19 and later Fixed in 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4, 7.0 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*6.1.163 to before 6.1.165; 6.6.124 to before 6.6.128; 6.12.70 to before 6.12.75; 6.18.10 to before 6.18.14; 6.19.1 to before 6.19.4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.19:-:*:*:*:*:*:*6.19VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.1.163 to before 6.1.165; 6.6.124 to before 6.6.128; 6.12.70 to before 6.12.75; 6.18.10 to before 6.18.14; 6.19.1 to before 6.19.4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.19:-:*:*:*:*:*:* Versions 6.19 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.1.165, 6.6.128, 6.12.75, 6.18.14
  • Fix · CNA Linux (Linux) Fixed in 6.1.165, 6.6.128, 6.12.75, 6.18.14, 6.19.4, 7.0

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet
Red Hat Enterprise Linux 9AffectedNo fix yet
Not affected: 4 products
  • 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-2026-45972
  2. 2026-10-03 Alias added: GHSA-6w7x-q46j-6x9r
  3. 2026-10-16 CISA SSVC decision points changed
  4. 2026-10-19 Weakness changed · CISA ADP
  5. 2026-10-29 Affected versions changed · Red Hat

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