Bug 2461452 (CVE-2026-31608) - CVE-2026-31608 kernel: smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()
Summary: CVE-2026-31608 kernel: smb: server: avoid double-free in smb_direct_free_send...
Keywords:
Status: NEW
Alias: CVE-2026-31608
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-24 15:02 UTC by OSIDB Bzimport
Modified: 2026-04-24 19:42 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-04-24 15:02:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()

smb_direct_flush_send_list() already calls smb_direct_free_sendmsg(),
so we should not call it again after post_sendmsg()
moved it to the batch list.
Comment 1 Keith Grant 2026-04-24 19:40:40 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026042421-CVE-2026-31608-1786@gregkh/T
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