CVE-2026-92488

Summary

In the Linux kernel, the following vulnerability has been resolved:

RDMA/erdma: complete object teardown when the destroy command fails

erdma_destroy_qp(), erdma_destroy_cq(), erdma_dereg_mr(), and erdma_destroy_ah() returned early when erdma_post_cmd_wait() failed, leaking the queue buffers, MTTs, doorbells and the STAG, QPN, CQN and AHN identifiers. A command timeout clears ERDMA_CMDQ_STATE_OK_BIT and permanently disables the command queue, so no retry can succeed; the RDMA core keeps the object after a failed destructor and forced uverbs cleanup then nulls the pointers, making the resources unreachable.

Warn on failure but release every software-owned resource and return success, since during terminal destruction the hardware command result is only diagnostic.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux155055771704f8cbb5c176a4309b7dc30a50450c < 5fcfc988ecf3e2bbe308b95c2c0d2f011d9afabeaffected
LinuxLinux155055771704f8cbb5c176a4309b7dc30a50450c < ce7d205c264665517c25e8a3231cf2d0c2443e3caffected
LinuxLinux155055771704f8cbb5c176a4309b7dc30a50450c < 334145d683ad3e31d052247f10807f2ebc950351affected
LinuxLinux155055771704f8cbb5c176a4309b7dc30a50450c < 652befcba956ef357f480525ccbe25c59bc81d4daffected
LinuxLinux6.0affected
LinuxLinux0 < 6.0unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References