In the Linux kernel, the following vulnerability has been resolved:
dmaengine: idxd: Fix double free in idxd_setup_wqs()
The clean up in idxd_setup_wqs() has had a couple bugs because the error
handling is a bit subtle. It's simpler to just re-write it in a cleaner
way. The issues here are:
1) If "idxd->max_wqs" is <= 0 then we call put_device(conf_dev) when
"conf_dev" hasn't been initialized.
2) If kzalloc_node() fails then again "conf_dev" is invalid. It's
either uninitialized or it points to the "conf_dev" from the
previous iteration so it leads to a double free.
It's better to free partial loop iterations within the loop and then
the unwinding at the end can handle whole loop iterations. I also
renamed the labels to describe what the goto does and not where the goto
was located.
References
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
20 Jan 2026, 20:40
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/25e6146c2812487a88f619d5ff6efbdcd5b2bc31 - Patch | |
| References | () https://git.kernel.org/stable/c/39aaa337449e71a41d4813be0226a722827ba606 - Patch | |
| References | () https://git.kernel.org/stable/c/9f0e225635475b2285b966271d5e82cba74295b1 - Patch | |
| References | () https://git.kernel.org/stable/c/df82c7901513fd0fc738052a8e6a330d92cc8ec9 - Patch | |
| References | () https://git.kernel.org/stable/c/ec5430d090d0b6ace8fefa290fc37e88930017d2 - Patch | |
| References | () https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html - Third Party Advisory, Mailing List | |
| First Time |
Linux
Debian Debian debian Linux Linux linux Kernel |
|
| CPE | cpe:2.3:o:linux:linux_kernel:6.15:rc7:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.15:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* |
|
| CWE | CWE-415 | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
03 Nov 2025, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
23 Sep 2025, 06:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-09-23 06:15
Updated : 2026-01-20 20:40
NVD link : CVE-2025-39870
Mitre link : CVE-2025-39870
CVE.ORG link : CVE-2025-39870
JSON object : View
Products Affected
debian
- debian_linux
linux
- linux_kernel
CWE
CWE-415
Double Free