CVE-2024-42285: RDMA/iwcm: Fix a use-after-free related to destroying CM IDs
In the Linux kernel, the following vulnerability has been resolved:
RDMA/iwcm: Fix a use-after-free related to destroying CM IDs
iwconnreqhandler() associates a new struct rdmaidprivate (connid) with an existing struct iwcmid (cmid) as follows:
connid->cmid.iw = cmid; cmid->context = connid; cmid->cmhandler = cmaiwhandler;
rdmadestroyid() frees both the cmid and the struct rdmaidprivate. Make sure that cmworkhandler() does not trigger a use-after-free by only freeing of the struct rdmaidprivate after all pending work has finished.
Other sources
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— Launchpad
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.22-1Fixed in 6.12.25-1 - Upgrade
Upgrade
debian/linux-6.1to a version that resolves this vulnerability.Fixed in 6.1.129-1~deb11u1
Event History
Frequently Asked Questions
What is the severity of CVE-2024-42285?
CVE-2024-42285 has not been assigned a specific severity rating yet, but it addresses a use-after-free vulnerability that could potentially lead to denial of service or code execution.
How do I fix CVE-2024-42285?
To fix CVE-2024-42285, update your Linux kernel to one of the patched versions specified in the vulnerability details.
Which Linux kernel versions are affected by CVE-2024-42285?
CVE-2024-42285 affects various versions of the Linux kernel, particularly those before the patched versions 5.10.226-1, 6.1.123-1, and others as listed in the details.
Is CVE-2024-42285 exploitable?
Yes, CVE-2024-42285 is considered exploitable, especially in environments where RDMA functionalities are used.
What types of systems are impacted by CVE-2024-42285?
CVE-2024-42285 impacts systems running affected versions of the Linux kernel that utilize RDMA protocols.