Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix change notify replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_notify_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/145f820dcbb2cced374f2532f8a61a44dce4a615 Patch
- git.kernel.org/stable/c/52af1975f0dfae990c5a0e85872cc41be0e88a68 Patch
- git.kernel.org/stable/c/5821f9dbb8b5b24391850a13418e633edd0fb003 Patch
- git.kernel.org/stable/c/901891513951bc8322ece754863909ea45af95c6 Patch
- git.kernel.org/stable/c/d684f4134998085702009b94c35c2003fc9e72d3 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.