CVE-2026-64382
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_open() replay A response-bearing attempt can return a replayable error and free its response buffer.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.35%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix double-free in SMB2_open() replay A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_open_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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.35% probability · 29th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-415
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/02bc2896bdc3e29362d6e40d404006944a159c25Patch
- https://git.kernel.org/stable/c/14498ff5ce0f272ce0ef988721413e06b7038972Patch
- https://git.kernel.org/stable/c/3196b5192f246df4272072f61a2f4a3e9967f55dPatch
- https://git.kernel.org/stable/c/b55e182f2324bc6a604c21a47aa6c448f719a532Patch
- https://git.kernel.org/stable/c/ff2d30927bc3bf3c629f0768d2068096e64ef5cePatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.