CVE-2026-98252

RDMA/core: fix refcount bug in iwpm_get_nlmsg_request()

State: Published
Severity: 7.0 High
Published: Oct 6, 2026
Updated: Oct 19, 2026
Reserved: Sep 25, 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().

Scores

CVSS	Score	Vector	Source
3.1	7.0 High	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	30dc5e63d6a5ad24894b5512d10b228d73645a44 to before 52c13c63bb3662c108244e7447055e30bf40244eAffected 30dc5e63d6a5ad24894b5512d10b228d73645a44 to before 8a91609032d47e77bcb37bc8f6e88d89340d2709Affected 30dc5e63d6a5ad24894b5512d10b228d73645a44 to before ce8a379598bd4058081416abea4279fd05a95374Affected 30dc5e63d6a5ad24894b5512d10b228d73645a44 to before 2fbac8a56004b6ce54fbfe845d4b25da6e0b55e8Affected 30dc5e63d6a5ad24894b5512d10b228d73645a44 to before 88e429a4e9bac3d2138011c5ca06254331f2587fAffected 30dc5e63d6a5ad24894b5512d10b228d73645a44 to before e15eb536be4f646ce683d2867572b2200be877f7Affected 30dc5e63d6a5ad24894b5512d10b228d73645a44 to before 117871cdb8927542abd7b65ce5995bf0265a8c05Affected 30dc5e63d6a5ad24894b5512d10b228d73645a44 to before 33fb59da49c4c3f5c2ec9f9d4447a56857a02c02Affected
LinuxLinux	3.16Affected before 3.16Not affected 5.10.271 through 5.10.Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.112 through 6.12.Not affected 6.18.54 through 6.18.Not affected 7.2.8 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

30dc5e63d6a5ad24894b5512d10b228d73645a44 to before 52c13c63bb3662c108244e7447055e30bf40244eAffected
30dc5e63d6a5ad24894b5512d10b228d73645a44 to before 8a91609032d47e77bcb37bc8f6e88d89340d2709Affected
30dc5e63d6a5ad24894b5512d10b228d73645a44 to before ce8a379598bd4058081416abea4279fd05a95374Affected
30dc5e63d6a5ad24894b5512d10b228d73645a44 to before 2fbac8a56004b6ce54fbfe845d4b25da6e0b55e8Affected
30dc5e63d6a5ad24894b5512d10b228d73645a44 to before 88e429a4e9bac3d2138011c5ca06254331f2587fAffected
30dc5e63d6a5ad24894b5512d10b228d73645a44 to before e15eb536be4f646ce683d2867572b2200be877f7Affected
30dc5e63d6a5ad24894b5512d10b228d73645a44 to before 117871cdb8927542abd7b65ce5995bf0265a8c05Affected
30dc5e63d6a5ad24894b5512d10b228d73645a44 to before 33fb59da49c4c3f5c2ec9f9d4447a56857a02c02Affected

LinuxLinux

3.16Affected
before 3.16Not affected
5.10.271 through 5.10.*Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.112 through 6.12.*Not affected
6.18.54 through 6.18.*Not affected
7.2.8 through 7.2.*Not affected
7.3 and laterNot affected

References

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