smb/server: fix possible memory leak in smb2_read()
Published Dec 6, 2025
No CVSS score
EPSS 0.19%
Description
Memory leak occurs when ksmbd_vfs_read() fails. Fix this by adding the missing kvfree().
Affected products
-
Affected
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
-
Affected
- 5.15
Unaffected
- ≥ 0, < 5.15
- ≥ 6.1.159, ≤ 6.1.*
- ≥ 6.12.59, ≤ 6.12.*
- ≥ 6.17.9, ≤ 6.17.*
- 6.18
- ≥ 6.6.117, ≤ 6.6.*
Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).
No data.
No data.
Red Hat Enterprise Linux 10
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Not affected
Red Hat Enterprise Linux 9
kernel-rt
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
No CWE recorded.
References (11)
- https://access.redhat.com/security/cve/CVE-2025-40286 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2419887 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-201569 Advisory
- https://git.kernel.org/stable/c/0797c6cf3b857cc229ab2bc69552938dcd738d78
- https://git.kernel.org/stable/c/63d8706a2c09a0c29b8b0e8a44bc7a1339685de9
- https://git.kernel.org/stable/c/6fced056d2cc8d01b326e6fcfabaacb9850b71a4
- https://git.kernel.org/stable/c/bfda5422a16651d0bf864ec468b1c216e1b10d91
- https://git.kernel.org/stable/c/f1305587731886da37a214cda812ade246c653b0
- https://lore.kernel.org/linux-cve-announce/2025120718-CVE-2025-40286-1b9c@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2025-40286
- https://www.cve.org/CVERecord?id=CVE-2025-40286
Change history (0)
No recorded changes yet.
CVE.org / MITRE
CISA Vulnrichment
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GitHub
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