An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/connection.c in ksmbd has an off-by-one error in memory allocation (because of ksmbd_smb2_check_message) that may lead to out-of-bounds access.
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Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2023-07-18. NVD baseline CVSS 9.8; sources differ by 0.0.
An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/connection.c in ksmbd has an off-by-one error in memory allocation (because of ksmbd_smb2_check_message) that may lead to out-of-bounds access.
July 18, 2023
January 3, 2025
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | linux-tools-azure (6.2.0.1011.11) @ lunar | 2026-05-24 | ubuntu |
| ubuntu | linux-tools-oracle-lts-22.04 (5.15.0.1042.37) @ jammy | 2026-05-24 | ubuntu |
| ubuntu | linux-tools-raspi-nolpae (5.15.0.1037.35) @ jammy | 2026-05-24 | ubuntu |
| ubuntu | linux-virtual-hwe-22.04-edge (6.2.0.32.32) @ lunar | 2026-05-24 | ubuntu |
| ubuntu | linux-tools-gkeop-edge (5.15.0.1027.32~20.04.23) @ focal | 2026-05-24 | ubuntu |
| ubuntu | linux-virtual-hwe-20.04-edge (5.15.0.83.92~20.04.41) @ focal | 2026-05-24 | ubuntu |
| ubuntu | linux-tools-gkeop-5.15 (5.15.0.1027.26) @ jammy | 2026-05-24 | ubuntu |
| ubuntu | linux-tools-starfive (6.2.0.1004.7) @ lunar | 2026-05-24 | ubuntu |
| ubuntu | linux-tools-intel-iotg (5.15.0.1039.39) @ jammy | 2026-05-24 | ubuntu |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
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Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
An issue was discovered in the Linux kernel before 6.3.4. fs/ksmbd/connection.c in ksmbd has an off-by-one error in memory allocation (because of ksmbd_smb2_check_message) that may lead to out-of-bounds access.
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Linux kernel (GKE) vulnerabilities
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