CVE - CVE-2024-38544

CVE-ID
CVE-2024-38544	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt In rxe_comp_queue_pkt() an incoming response packet skb is enqueued to the resp_pkts queue and then a decision is made whether to run the completer task inline or schedule it. Finally the skb is dereferenced to bump a 'hw' performance counter. This is wrong because if the completer task is already running in a separate thread it may have already processed the skb and freed it which can cause a seg fault. This has been observed infrequently in testing at high scale. This patch fixes this by changing the order of enqueuing the packet until after the counter is accessed.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/21b4c6d4d89030fd4657a8e7c8110fd941049794 URL:https://git.kernel.org/stable/c/21b4c6d4d89030fd4657a8e7c8110fd941049794 MISC:https://git.kernel.org/stable/c/2b23b6097303ed0ba5f4bc036a1c07b6027af5c6 URL:https://git.kernel.org/stable/c/2b23b6097303ed0ba5f4bc036a1c07b6027af5c6 MISC:https://git.kernel.org/stable/c/30df4bef8b8e183333e9b6e9d4509d552c7da6eb URL:https://git.kernel.org/stable/c/30df4bef8b8e183333e9b6e9d4509d552c7da6eb MISC:https://git.kernel.org/stable/c/bbad88f111a1829f366c189aa48e7e58e57553fc URL:https://git.kernel.org/stable/c/bbad88f111a1829f366c189aa48e7e58e57553fc MISC:https://git.kernel.org/stable/c/c91fb72a2ca6480d8d77262eef52dc5b178463a3 URL:https://git.kernel.org/stable/c/c91fb72a2ca6480d8d77262eef52dc5b178463a3 MISC:https://git.kernel.org/stable/c/de5a059e36657442b5637cc16df5163e435b9cb4 URL:https://git.kernel.org/stable/c/de5a059e36657442b5637cc16df5163e435b9cb4 MISC:https://git.kernel.org/stable/c/e0e14dd35d4242340c7346aac60c7ff8fbf87ffc URL:https://git.kernel.org/stable/c/e0e14dd35d4242340c7346aac60c7ff8fbf87ffc MISC:https://git.kernel.org/stable/c/faa8d0ecf6c9c7c2ace3ca3e552180ada6f75e19 URL:https://git.kernel.org/stable/c/faa8d0ecf6c9c7c2ace3ca3e552180ada6f75e19
Assigning CNA
kernel.org
Date Record Created
20240618	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240618)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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