CVE-2023-54250
- Source
- https://cve.org/CVERecord?id=CVE-2023-54250
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54250.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-54250
- Downstream
- Published
- 2025-12-30T12:15:47.467Z
- Modified
- 2026-04-02T09:45:42.401360Z
- Summary
- ksmbd: avoid out of bounds access in decode_preauth_ctxt()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: avoid out of bounds access in decodepreauthctxt()
Confirm that the accessed pnegctxt->HashAlgorithms address sits within the SMB request boundary; deassemblenegcontexts() only checks that the eight byte smb2neg_context header + (client controlled) DataLength are within the packet boundary, which is insufficient.
Checking for sizeof(struct smb2preauthnegcontext) is overkill given that the type currently assumes SMB311SALT_SIZE bytes of trailing Salt.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54250.json" }- References
-
- https://git.kernel.org/stable/c/39f5b4b313b445c980a2a295bed28228c29228ed
- https://git.kernel.org/stable/c/a2f6ded41bec1d3be643c80a5eb97f1680309001
- https://git.kernel.org/stable/c/e7067a446264a7514fa1cfaa4052cdb6803bc6a2
- https://git.kernel.org/stable/c/f02edb9debbd36f44efa7567031485892c7df60d
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54250.json
- https://nvd.nist.gov/vuln/detail/CVE-2023-54250
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducede2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9Fixed39f5b4b313b445c980a2a295bed28228c29228edFixeda2f6ded41bec1d3be643c80a5eb97f1680309001Fixedf02edb9debbd36f44efa7567031485892c7df60dFixede7067a446264a7514fa1cfaa4052cdb6803bc6a2