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CVE-2026-98452

Unknown

Last modified

CVE-2026-98452 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: smb: client: clean up failed cached directory opens open_cached_dir() sends CREATE and QUERY_INFO as a compound request. If the CREATE succeeds but a later command returns an error, the function must retain the CREATE FID so common cleanup can issue SMB2_close().

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: clean up failed cached directory opens open_cached_dir() sends CREATE and QUERY_INFO as a compound request. If the CREATE succeeds but a later command returns an error, the function must retain the CREATE FID so common cleanup can issue SMB2_close(). It also must not treat a response error as a valid CREATE. Validate the CREATE response before using its fields, record the FIDs, and mark the handle open before handling errors from later compound commands. Move the -EREMCHG reconnect handling before response validation so a missing response does not hide the reconnect request. Count the handle when it is marked open; confirmed close responses decrement the counter, while existing close retry behavior remains best effort on transport failures.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= b0f6df737a1c5d9d5ff90cc946205d8af46cc067, < 48958ddda3d7eee3600261e2d90671f63e055dc4; >= b0f6df737a1c5d9d5ff90cc946205d8af46cc067, < abab661eed00fa102d3c35ddf1cce4f687e718c1; >= b0f6df737a1c5d9d5ff90cc946205d8af46cc067, < 7c1509598a4fdfb54cb09ce33e4405bd6dbd8295; >= b0f6df737a1c5d9d5ff90cc946205d8af46cc067, < d2ff5fb93ea83034025850266b5eed391f96b825
LinuxLinux5.1

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98452?
In the Linux kernel, the following vulnerability has been resolved: smb: client: clean up failed cached directory opens open_cached_dir() sends CREATE and QUERY_INFO as a compound request. If the CREATE succeeds but a later command returns an error, the function must retain the CREATE FID so common cleanup can issue SMB2_close(). It also must not treat a response error as a valid CREATE. Validate the CREATE response before using its fields, record the FIDs, and mark the handle open before handling errors from later compound commands. Move the -EREMCHG reconnect handling before response validation so a missing response does not hide the reconnect request. Count the handle when it is marked open; confirmed close responses decrement the counter, while existing close retry behavior remains best effort on transport failures.
How severe is CVE-2026-98452?
Severity scoring for CVE-2026-98452 is pending analysis.
How do I fix CVE-2026-98452?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST