CVE-2023-32256
published 2025-08-01CVE-2023-32256: A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a…
PriorityP340high7.5CVSS 3.1
AVNACHPRNUINSCCLINAH
EPSS
0.53%
41.0th percentile
A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.37-1 (bookworm) | linux 6.1.37-1 (bookworm) |
| linux | linux_kernel | >= 0 < 6.1.37-1 | 6.1.37-1 |
| linux | linux_kernel | >= 0 < 6.3.7-1 | 6.3.7-1 |
| linux | linux_kernel | >= 0 < 6.3.7-1 | 6.3.7-1 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:H
osv7.5HIGH
vendor_debian7.5HIGH
vendor_redhat7.5HIGH
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Red Hat
kernel: ksmbd race issue from smb2 close and logoff with multichannel
vendor_redhat·2023-05-17·CVSS 7.5
CVE-2023-32256 [HIGH] CWE-421 kernel: ksmbd race issue from smb2 close and logoff with multichannel
kernel: ksmbd race issue from smb2 close and logoff with multichannel
A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue.
A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue.
Statement: The ksmbd kernel component is not shipped in any Red Hat Products.
Package: kernel (Red Hat Enterprise Linux 10) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel (Red Hat Enterprise Li
Debian
CVE-2023-32256: linux - A flaw was found in the Linux kernel's ksmbd component. A race condition between...
vendor_debian·2023·CVSS 7.5
CVE-2023-32256 [HIGH] CVE-2023-32256: linux - A flaw was found in the Linux kernel's ksmbd component. A race condition between...
A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue.
Scope: local
bookworm: resolved (fixed in 6.1.37-1)
bullseye: open
forky: resolved (fixed in 6.3.7-1)
sid: resolved (fixed in 6.3.7-1)
trixie: resolved (fixed in 6.3.7-1)
GHSA
GHSA-fmp3-xxcc-559c: A flaw was found in the Linux kernel's ksmbd component
ghsa_unreviewed·2025-08-01
CVE-2023-32256 [HIGH] CWE-421 GHSA-fmp3-xxcc-559c: A flaw was found in the Linux kernel's ksmbd component
A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue.
OSV
CVE-2023-32256: A flaw was found in the Linux kernel's ksmbd component
osv·2025-08-01·CVSS 7.5
CVE-2023-32256 [HIGH] CVE-2023-32256: A flaw was found in the Linux kernel's ksmbd component
A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-08-01
Published