smb: client: clean up failed cached directory opens
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.12.112, 6.18.55, 7.2.9
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From b0f6df737a1c5d9d5ff90cc946205d8af46cc067 · fixed in 48958ddda3d7eee3600261e2d90671f63e055dc4; From b0f6df737a1c5d9d5ff90cc946205d8af46cc067 · fixed in abab661eed00fa102d3c35ddf1cce4f687e718c1; From b0f6df737a1c5d9d5ff90cc946205d8af46cc067 · fixed in 7c1509598a4fdfb54cb09ce33e4405bd6dbd8295; From b0f6df737a1c5d9d5ff90cc946205d8af46cc067 · fixed in d2ff5fb93ea83034025850266b5eed391f96b825
- Linux Linux
5.1
- KernelLinux
From 5.1.0 · fixed in 6.12.112; From 6.13.0 · fixed in 6.18.55; From 6.19.0 · fixed in 7.2.9