CVE-2025-39846
Published: September 20, 2025Last modified: September 20, 2025
Description
In the Linux kernel, the following vulnerability has been resolved: pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region() In __iodyn_find_io_region(), pcmcia_make_resource() is assigned to res and used in pci_bus_alloc_resource(). There is a dereference of res in pci_bus_alloc_resource(), which could lead to a NULL pointer dereference on failure of pcmcia_make_resource(). Fix this bug by adding a check of res.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.151-r0) |
| 25 LTS | linux-lts | Fixed (6.12.51-r0) | |
| Stream | linux-lts | Fixed (6.12.46-r0) |
References
- https://git.kernel.org/stable/c/2ee32c4c4f636e474cd8ab7c19a68cf36072ea93
- https://git.kernel.org/stable/c/44822df89e8f3386871d9cad563ece8e2fd8f0e7
- https://git.kernel.org/stable/c/4bd570f494124608a0696da070f00236a96fb610
- https://git.kernel.org/stable/c/5ff2826c998370bf7f9ae26fe802140d220e3510
- https://git.kernel.org/stable/c/b990c8c6ff50649ad3352507398e443b1e3527b2
- https://git.kernel.org/stable/c/ce3b7766276894d2fbb07e2047a171f9deb965de
- https://git.kernel.org/stable/c/d7286005e8fde0a430dc180a9f46c088c7d74483
- https://git.kernel.org/stable/c/fafa7450075f41d232bc785a4ebcbf16374f2076
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html