Review reviewHigh

CVE-2024-42285

Linux Linux, linux kernel

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->cm_id.iw = cm_id; cm_id->context = conn_id; cm_id->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.

CVSS
7.8
EPSS
0.87%
55.3% percentile
CISA KEV
Not listed
Published
2024.08.17
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.87%
Technical severityCVSS 7.8

Vulnerability overview

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->cm_id.iw = cm_id; cm_id->context = conn_id; cm_id->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.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 59c68ac31e15ad09d2cb04734e3c8c544a95f8d4 < d91d253c87fd1efece521ff2612078a35af673c6, >= 59c68ac31e15ad09d2cb04734e3c8c544a95f8d4 < 7f25f296fc9bd0435be14e89bf657cd615a23574, >= 59c68ac31e15ad09d2cb04734e3c8c544a95f8d4 < 94ee7ff99b87435ec63211f632918dc7f44dac79, >= 59c68ac31e15ad09d2cb04734e3c8c544a95f8d4 < 557d035fe88d78dd51664f4dc0e1896c04c97cf6, >= 59c68ac31e15ad09d2cb04734e3c8c544a95f8d4 < dc8074b8901caabb97c2d353abd6b4e7fa5a59a5, >= 59c68ac31e15ad09d2cb04734e3c8c544a95f8d4 < ff5bbbdee08287d75d72e65b72a2b76d9637892a, >= 59c68ac31e15ad09d2cb04734e3c8c544a95f8d4 < ee39384ee787e86e9db4efb843818ef0ea9cb8ae, >= 59c68ac31e15ad09d2cb04734e3c8c544a95f8d4 < aee2424246f9f1dadc33faa78990c1e2eb7826e4, >= 4.8, >= 4.8 < 4.19.320, >= 4.20 < 5.4.282, >= 5.5 < 5.10.224, >= 5.11 < 5.15.165, >= 5.16 < 6.1.103, >= 6.2 < 6.6.44, >= 6.7 < 6.10.3
Fixed versions
4.19.320, 5.4.282, 5.10.224, 5.15.165, 6.1.103, 6.6.44, 6.10.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416
CVE-2024-42285 — Linux Linux, linux kernel | SECUFOCUS NOW