In the Linux kernel, the following vulnerability has been resolved:
fs/smb: Fix inconsistent refcnt update
A possible inconsistent update of refcount was identified in `smb2_compound_op`.
Such inconsistent update could lead to possible resource leaks.
Why it is a possible bug:
1. In the comment section of the function, it clearly states that the
reference to `cfile` should be dropped after calling this function.
2. Every control flow path would check and drop the reference to
`cfile`, except the patched one.
3. Existing callers would not handle refcount update of `cfile` if
-ENOMEM is returned.
To fix the bug, an extra goto label "out" is added, to make sure that the
cleanup logic would always be respected. As the problem is caused by the
allocation failure of `vars`, the cleanup logic between label "finished"
and "out" can be safely ignored. According to the definition of function
`is_replayable_error`, the error code of "-ENOMEM" is not recoverable.
Therefore, the replay logic also gets ignored.
References
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
|
History
16 Jan 2026, 20:09
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | NVD-CWE-noinfo | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| First Time |
Linux
Debian Debian debian Linux Linux linux Kernel |
|
| References | () https://git.kernel.org/stable/c/3fc11ff13fbc2749871d6ac2141685cf54699997 - Patch | |
| References | () https://git.kernel.org/stable/c/4191ea1f0bb3e27d65c5dcde7bd00e709ec67141 - Patch | |
| References | () https://git.kernel.org/stable/c/4735f5991f51468b85affb8366b7067248457a71 - Patch | |
| References | () https://git.kernel.org/stable/c/ab529e6ca1f67bcf31f3ea80c72bffde2e9e053e - Patch | |
| References | () https://git.kernel.org/stable/c/cc82c6dff548f0066a51a6e577c7454e7d26a968 - Patch | |
| References | () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - Third Party Advisory | |
| CPE | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* |
03 Nov 2025, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
16 Sep 2025, 13:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-09-16 13:15
Updated : 2026-01-16 20:09
NVD link : CVE-2025-39819
Mitre link : CVE-2025-39819
CVE.ORG link : CVE-2025-39819
JSON object : View
Products Affected
debian
- debian_linux
linux
- linux_kernel
CWE