CVE-2026-99114 (GCVE-0-2026-99114)

Vulnerability from cvelistv5 – Published: 2026-10-28 10:34 – Updated: 2026-10-30 12:41
VLAI
Title
ksmbd: initialize FileSystemControlFlags in FS_CONTROL_INFORMATION
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: initialize FileSystemControlFlags in FS_CONTROL_INFORMATION smb2_get_info_filesystem() reports 48 bytes for FS_CONTROL_INFORMATION, that is the whole of struct smb2_fs_control_info, but never assigns FileSystemControlFlags. Those four bytes go to the client as they are found in the response buffer. The buffer is zeroed on allocation, so a standalone request leaks nothing. A compound request can leak: the offset of the next response is advanced by the length pinned for the previous one, so a reply that was written into the buffer and then dropped in favour of the short error response of smb2_set_err_rsp() stays there, and the next reply is laid over it with only the header cleared. ksmbd does not implement quota tracking, so report no control flags.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6637 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < 995456b5e703e128904a6cbc8b3347eb3d04c72c (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < c78aea8984c84767e87f677477e4784deb8adfde (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < e8b82184a1982894820a91a72ac9857ddd5dffbf (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < 370459776468fc68c97008360108f381e3120953 (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < d8c450ad0d08980b39b08d435efa921086c8b227 (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < 03bb4338c3a7c3fc4decf699a35753f0891aab2a (git)
Affected: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 , < c0cd3fc6824122014da2b3b0cb7ddeaa2946ec8e (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.224 , ≤ 5.15.* (semver)
Unaffected: 6.1.191 , ≤ 6.1.* (semver)
Unaffected: 6.6.161 , ≤ 6.6.* (semver)
Unaffected: 6.12.115 , ≤ 6.12.* (semver)
Unaffected: 6.18.59 , ≤ 6.18.* (semver)
Unaffected: 7.2.13 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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}



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