Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query directory replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_directory_init() fails before the next send, cleanup retains the previous buffer type and frees that response again. Reset response bookkeeping before each attempt to prevent the stale free.
Affected products
linux: linux kernel
References5
- git.kernel.org/stable/c/00b0fa425941438b664950a8ee65dfba2def4336 Patch
- git.kernel.org/stable/c/1665f25b1dea30bf2d02e16245d203a944c9d994 Patch
- git.kernel.org/stable/c/3317a5d015fca976475aa71df224056777316fde Patch
- git.kernel.org/stable/c/3409aedf3c81a810243da94164f6621c9d205c98 Patch
- git.kernel.org/stable/c/9647492b5e41954be59d5157eddbcd4cdc1656f7 Patch
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 40 · as of 14 November 2026
- CWE
- CWE-415
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.