linux: In the Linux kernel, the following vulnerability has been resolved: ksmbd: avoid out of bounds access in decode_prea...
CVE-2023-54250 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-54250, released December 30, 2025. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: ksmbd: avoid out of bounds access in decode_preauth_ctxt() Confirm that the accessed pneg_ctxt->HashAlgorithms address sits within the SMB request boundary; deassemble_neg_contexts() only checks that the eight byte smb2_neg_context header + (client controlled) DataLength are within the packet boundary, which is insufficient. Checking for sizeof(struct smb2_preauth_neg_context) is overkill given that the type currently assumes SMB311_SALT_SIZE bytes of trailing Salt.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 6.1.25-1 | DEBIAN-CVE-2023-54250 | Dec 30, 2025 |
| linux · Debian 13.5 (trixie) | 6.1.25-1 | DEBIAN-CVE-2023-54250 | Dec 30, 2025 |
| linux · Debian 14 | 6.1.25-1 | DEBIAN-CVE-2023-54250 | Dec 30, 2025 |
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