CVE-2026-31608

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Source
https://cve.org/CVERecord?id=CVE-2026-31608
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31608.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-31608
Downstream
Related
Published
2026-04-24T14:42:30.137Z
Modified
2026-05-18T05:59:51.937234819Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
smb: server: avoid double-free in smb_direct_free_sendmsg after smb_direct_flush_send_list()
Details

In the Linux kernel, the following vulnerability has been resolved:

smb: server: avoid double-free in smbdirectfreesendmsg after smbdirectflushsend_list()

smbdirectflushsendlist() already calls smbdirectfreesendmsg(), so we should not call it again after postsendmsg() moved it to the batch list.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31608.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
5ef18a2e66f2f33fdac64437bddfb9fe6389fdc7
Fixed
6968c91fab05b8fc4d6700e0cf34472bb422df25
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
79242e7b6bc63efec28b7c235bc320806afce6c0
Fixed
2ba03f46132b0d1a7bafb86e1ef61951a2254023
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
34abd408c8ba24d7c97bd02ba874d8c714f49db1
Fixed
830de6eeb9db4cb7e758201fb99328ef4ca4b032
Fixed
84ff995ae826aa6bbcc6c7b9ea569ff67c021d72

Affected versions

v6.*
v6.18.11
v6.18.12
v6.18.13
v6.18.14
v6.18.15
v6.18.16
v6.18.17
v6.18.18
v6.18.19
v6.18.20
v6.18.21
v6.18.22
v6.18.23
v6.19.1
v6.19.10
v6.19.11
v6.19.12
v6.19.13
v6.19.2
v6.19.3
v6.19.4
v6.19.5
v6.19.6
v6.19.7
v6.19.8
v6.19.9

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31608.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.18.24
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.14
Type
ECOSYSTEM
Events
Introduced
6.20.0
Fixed
7.0.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31608.json"