CVE-2026-98252
Published: October 9, 2026Last modified: October 9, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/core: fix refcount bug in iwpm_get_nlmsg_request() iwpm_get_nlmsg_request() initializes refcount _after_ list_add_tail() making it accessible to global list where another CPU can kref_get() on nlmsg_request causing a refcount "addition on 0" bug. Fix this by initializing kref _before_ list_add_tail() so refcount for nlmsg_request can be incremented/decremented normally. In addition, also initialize every field before list_add_tail().
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7 |
| Attack Vector | LOCAL |
| Attack complexity | HIGH |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.189-r0) |
| 25 LTS | linux-lts | Fixed (6.12.112-r0) | |
| Stream | linux-lts | Fixed (6.18.55-r0) |
References
- https://git.kernel.org/stable/c/117871cdb8927542abd7b65ce5995bf0265a8c05
- https://git.kernel.org/stable/c/2fbac8a56004b6ce54fbfe845d4b25da6e0b55e8
- https://git.kernel.org/stable/c/33fb59da49c4c3f5c2ec9f9d4447a56857a02c02
- https://git.kernel.org/stable/c/52c13c63bb3662c108244e7447055e30bf40244e
- https://git.kernel.org/stable/c/88e429a4e9bac3d2138011c5ca06254331f2587f
- https://git.kernel.org/stable/c/8a91609032d47e77bcb37bc8f6e88d89340d2709
- https://git.kernel.org/stable/c/ce8a379598bd4058081416abea4279fd05a95374
- https://git.kernel.org/stable/c/e15eb536be4f646ce683d2867572b2200be877f7