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CVE

CVE-2026-31608

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

CVE-2026-31608

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

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

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

smbdirectflushsendlist() already calls smbdirectfree_sendmsg(),

so we should not call it again after post_sendmsg()

moved it to the batch list.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://git.kernel.org/stable/c/2ba03f46132b0d1a7bafb86e1ef61951a2254023, https://git.kernel.org/stable/c/6968c91fab05b8fc4d6700e0cf34472bb422df25, https://git.kernel.org/stable/c/830de6eeb9db4cb7e758201fb99328ef4ca4b032, https://git.kernel.org/stable/c/84ff995ae826aa6bbcc6c7b9ea569ff67c021d72, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31608.json, https://nvd.nist.gov/vuln/detail/CVE-2026-31608, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00457%
EPSS Percentile
0.36712%
Introduced Version
5ef18a2e66f2f33fdac64437bddfb9fe6389fdc7,79242e7b6bc63efec28b7c235bc320806afce6c0,34abd408c8ba24d7c97bd02ba874d8c714f49db1,6.18.11,6.19.1,0,6.19.0,6.20.0
Fix Available
6968c91fab05b8fc4d6700e0cf34472bb422df25,2ba03f46132b0d1a7bafb86e1ef61951a2254023,84ff995ae826aa6bbcc6c7b9ea569ff67c021d72,6.18.24,6.19.14,7.0.1,6.18.31-r0

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