ksmbd: fix slab out of bounds write in smb_inherit_dacl()
Priority HIGH 65CWE-787Published · 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-787 and the CVSS impact.
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slab out of bounds write in smb_inherit_dacl() slab out-of-bounds write is caused by that offsets is bigger than pntsd allocation size. This patch add the check to validate 3 offsets using allocation size.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.28134 98th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.15.140, 6.1.64, 6.5.13 +2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 and later | 5.15.140, 6.1.64, 6.5.13, 6.6.3, 6.7 | Patch available | CNA |
- Linux VendorLinux Affected 5.15 and later Fixed in 5.15.140, 6.1.64, 6.5.13, 6.6.3, 6.7 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.15 to before 5.15.140; 5.16 to before 6.1.64; 6.2 to before 6.5.13; 6.6 to before 6.6.3 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.15 to before 5.15.140; 5.16 to before 6.1.64; 6.2 to before 6.5.13; 6.6 to before 6.6.3 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.15.140, 6.1.64, 6.5.13, 6.6.3, 6.7
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
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
- 2026-10-02 Threatist record created from CVE-2023-52755
- 2026-10-03 Alias added: GHSA-hmgr-x2j2-pxwh
References
Patch 5
- https://git.kernel.org/stable/c/aaf0a07d60887d6c36fc46a24de0083744f07819
- https://git.kernel.org/stable/c/8387c94d73ec66eb597c7a23a8d9eadf64bfbafa
- https://git.kernel.org/stable/c/09d9d8b40a3338193619c14ed4dc040f4f119e70
- https://git.kernel.org/stable/c/712e01f32e577e7e48ab0adb5fe550646a3d93cb
- https://git.kernel.org/stable/c/eebff19acaa35820cb09ce2ccb3d21bee2156ffb
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-2023-52755 · CVE Program
- CVE-2023-52755 · NVD
- FIRST EPSS
- GHSA-hmgr-x2j2-pxwh · GitHub Advisory Database · CC BY 4.0
- CVE-2023-52755 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences