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LinuxVULNRICHMENT:CVE-2024-42285

HistoryAug 17, 2024 - 9:08 a.m.

CVE-2024-42285 RDMA/iwcm: Fix a use-after-free related to destroying CM IDs

2024-08-1709:08:51

Linux

github.com

linux kernel

vulnerability

rdma/iwcm

use-after-free

struct iw_cm_id

cma_iw_handler

rdma_destroy_id

AI Score

6.8

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

RDMA/iwcm: Fix a use-after-free related to destroying CM IDs

iw_conn_req_handler() associates a new struct rdma_id_private (conn_id) with
an existing struct iw_cm_id (cm_id) as follows:

    conn_id-&gt;cm_id.iw = cm_id;
    cm_id-&gt;context = conn_id;
    cm_id-&gt;cm_handler = cma_iw_handler;

rdma_destroy_id() frees both the cm_id and the struct rdma_id_private. Make
sure that cm_work_handler() does not trigger a use-after-free by only
freeing of the struct rdma_id_private after all pending work has finished.

References

git.kernel.org/stable/c/557d035fe88d78dd51664f4dc0e1896c04c97cf6

git.kernel.org/stable/c/7f25f296fc9bd0435be14e89bf657cd615a23574

git.kernel.org/stable/c/94ee7ff99b87435ec63211f632918dc7f44dac79

git.kernel.org/stable/c/aee2424246f9f1dadc33faa78990c1e2eb7826e4

git.kernel.org/stable/c/d91d253c87fd1efece521ff2612078a35af673c6

git.kernel.org/stable/c/dc8074b8901caabb97c2d353abd6b4e7fa5a59a5

git.kernel.org/stable/c/ee39384ee787e86e9db4efb843818ef0ea9cb8ae

git.kernel.org/stable/c/ff5bbbdee08287d75d72e65b72a2b76d9637892a