ksmbd: smbd: fix dma_unmap_sg() nents
Priority LOW 24Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbd: fix dma_unmap_sg() nents The dma_unmap_sg() functions should be called with the same nents as the dma_map_sg(), not the value the map function returned.
Why it matters now
EPSS 0.00147 3rd percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.15.199, 6.1.162, 6.6.123 +3
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.15 and later | 5.15.199, 6.1.162, 6.6.123, 6.12.69, 6.18.8, 6.19 | Patch available | CNA |
- Linux VendorLinux Affected 5.15 and later Fixed in 5.15.199, 6.1.162, 6.6.123, 6.12.69, 6.18.8, 6.19 Patch available CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.15 to before 5.15.199; 5.16 to before 6.1.162; 6.2 to before 6.6.123; 6.7 to before 6.12.69; 6.13 to before 6.18.8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:* | 6.19 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:* | 6.19 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:* | 6.19 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:* | 6.19 rc4 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:* | 6.19 rc5 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:* | 6.19 rc6 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.15 to before 5.15.199; 5.16 to before 6.1.162; 6.2 to before 6.6.123; 6.7 to before 6.12.69; 6.13 to before 6.18.8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:* Versions 6.19 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:* Versions 6.19 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:* Versions 6.19 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:* Versions 6.19 rc4 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:* Versions 6.19 rc5 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:* Versions 6.19 rc6 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.15.199, 6.1.162, 6.6.123, 6.12.69, 6.18.8, 6.19
Vendor assessments
Red Hat
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
- 2026-10-02 Threatist record created from CVE-2026-23093
- 2026-10-03 Alias added: GHSA-wm77-g5xw-58c7
References
Patch 6
- https://git.kernel.org/stable/c/f569f5b8bfd5133defdf9c7f8a72c63aa11f54ec
- https://git.kernel.org/stable/c/6ececffd3e9fe93a87738625dc0671165d27bf96
- https://git.kernel.org/stable/c/4d1e9a4a450aae47277763562122cc80ed703ab2
- https://git.kernel.org/stable/c/70ba85e439221a5d6dda34a3004db6640f0525e6
- https://git.kernel.org/stable/c/d1943bc9dc9508f5933788a76f8a35d10e43a646
- https://git.kernel.org/stable/c/98e3e2b561bc88f4dd218d1c05890672874692f6
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-2026-23093 · CVE Program
- CVE-2026-23093 · NVD
- FIRST EPSS
- GHSA-wm77-g5xw-58c7 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-23093 · Red Hat security data · CC BY 4.0
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