UnratedFix available
RDMA/cm: Fix leaking the multicast GID table reference
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: RDMA/cm: Fix leaking the multicast GID table reference If the CM ID is destroyed while the CM event for multicast creating is still queued the cancel_work_sync() will prevent the work from running which also prevents destroying the ah_attr. This leaks a refcount and triggers a WARN: GID entry ref leak for dev syz1 index 2 ref=573 WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 release_gid_table drivers/infiniband/core/cache.c:806 [inline] WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 gid_table_release_one+0x284/0x3cc drivers/infiniband/core/cache.c:886 Destroy the ah_attr after canceling the work, it is safe to call this twice.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.248, 5.15.198, 6.1.160, 6.12.64, 6.18.4, 6.6.120
- CVEs
- CVE-2025-71084
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 22:24 UTC · Revision 1
Source evidence
RDMA/cm: Fix leaking the multicast GID table reference
core-osv · Original sourcePublished 13 Jan 2026, 15:34 UTC
In the Linux kernel, the following vulnerability has been resolved: RDMA/cm: Fix leaking the multicast GID table reference If the CM ID is destroyed while the CM event for multicast creating is still queued the cancel_work_sync() will prevent the work from running which also prevents destroying the ah_attr. This leaks a refcount and triggers a WARN: GID entry ref leak for dev syz1 index 2 ref=573 WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 release_gid_table drivers/infiniband/core/cache.c:806 [inline] WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 gid_table_release_one+0x284/0x3cc drivers/infiniband/core/cache.c:886 Destroy the ah_attr after canceling the work, it is safe to call this twice.
osv:CVE-2025-71084
Kernel
Fixed versions: 5.10.248, 5.15.198, 6.1.160, 6.6.120, 6.12.64, 6.18.4
Complete source record
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