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CVE-2024-38544

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CVE-2024-38544

Published: Jun 19, 2024

Modified: May 11, 2026

PUBLISHED

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.

VendorProductVersions

Linux

Linux

affected
0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 - < c91fb72a2ca6480d8d77262eef52dc5b178463a3
affected
0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 - < de5a059e36657442b5637cc16df5163e435b9cb4
affected
0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 - < e0e14dd35d4242340c7346aac60c7ff8fbf87ffc
affected
0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 - < faa8d0ecf6c9c7c2ace3ca3e552180ada6f75e19
affected
0b1e5b99a48b5b810e3e38f1d6e0d39306b99ec0 - < 21b4c6d4d89030fd4657a8e7c8110fd941049794

+3 more versions

Linux

Linux

affected
4.12
unaffected
0 - < 4.12
unaffected
5.4.285 - <= 5.4.*
unaffected
5.10.227 - <= 5.10.*
unaffected
5.15.168 - <= 5.15.*

+5 more versions

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