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CVE-2026-98252

RDMA/core: fix refcount bug in iwpm_get_nlmsg_request()

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

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().

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 30dc5e63d6a5ad24894b5512d10b228d73645a44 · fixed in 52c13c63bb3662c108244e7447055e30bf40244e; From 30dc5e63d6a5ad24894b5512d10b228d73645a44 · fixed in 8a91609032d47e77bcb37bc8f6e88d89340d2709; From 30dc5e63d6a5ad24894b5512d10b228d73645a44 · fixed in ce8a379598bd4058081416abea4279fd05a95374; From 30dc5e63d6a5ad24894b5512d10b228d73645a44 · fixed in 2fbac8a56004b6ce54fbfe845d4b25da6e0b55e8; From 30dc5e63d6a5ad24894b5512d10b228d73645a44 · fixed in 88e429a4e9bac3d2138011c5ca06254331f2587f; From 30dc5e63d6a5ad24894b5512d10b228d73645a44 · fixed in e15eb536be4f646ce683d2867572b2200be877f7; From 30dc5e63d6a5ad24894b5512d10b228d73645a44 · fixed in 117871cdb8927542abd7b65ce5995bf0265a8c05; From 30dc5e63d6a5ad24894b5512d10b228d73645a44 · fixed in 33fb59da49c4c3f5c2ec9f9d4447a56857a02c02

  • Linux Linux

    3.16

  • KernelLinux

    From 3.16.0 · fixed in 5.10.271; From 5.11.0 · fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.112; From 6.13.0 · fixed in 6.18.54; From 6.19.0 · fixed in 7.2.8

References 8

git.kernel.org