ksmbd: fix out of bounds in init_smb2_rsp_hdr()
Priority MEDIUM 40CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- 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 bounds in init_smb2_rsp_hdr() If client send smb2 negotiate request and then send smb1 negotiate request, init_smb2_rsp_hdr is called for smb1 negotiate request since need_neg is set to false. This patch ignore smb1 packets after ->need_neg is set to false.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00679 52nd percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.15.145, 6.1.53, 6.3 +2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.15.105 to before 5.15.145; 6.1.22 to before 6.1.53; 6.2.9 to before 6.3 | 5.15.145, 6.1.53, 6.3 | Patch available | CNA |
| Linux | Linux | 6.3 and later | 5.15.145, 6.1.53, 6.4.16, 6.5 | Patch available | CNA |
- Linux VendorLinux Affected 5.15.105 to before 5.15.145; 6.1.22 to before 6.1.53; 6.2.9 to before 6.3 Fixed in 5.15.145, 6.1.53, 6.3 Patch available CNA
- Linux VendorLinux Affected 6.3 and later Fixed in 5.15.145, 6.1.53, 6.4.16, 6.5 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.15.0 to before 5.15.145; 5.16.0 to before 6.1.53; 6.2.0 to before 6.4.16 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.15.0 to before 5.15.145; 5.16.0 to before 6.1.53; 6.2.0 to before 6.4.16 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.15.145, 6.1.53, 6.3
- Fix · CNA Linux (Linux) Fixed in 5.15.145, 6.1.53, 6.4.16, 6.5
Timeline
- 2026-10-02 Threatist record created from CVE-2023-52441
- 2026-10-03 Alias added: GHSA-x6xm-ghm9-28cr
References
More Linux Kernel vulnerabilities
- 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
Sources
- CVE-2023-52441 · CVE Program
- CVE-2023-52441 · NVD
- FIRST EPSS
- GHSA-x6xm-ghm9-28cr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences