CVE-2023-54292 in Linux
摘要
由 VulDB • 2026-06-01
在 Linux 内核中，已修复以下漏洞：
RDMA/irdma：修复 CQP 请求完成状态的数据竞争
KCSAN 检测到 `cqp_request->request_done` 内存位置存在数据竞争，该位置在 `irdma_handle_cqp_op` 中无锁访问，同时在 `irdma_cqp_ce_handler` 中被更新。
使用 `READ_ONCE`/`WRITE_ONCE` 注解无锁意图，以避免任何编译器优化（如加载融合）以及 KCSAN 警告。
[222808.417128] BUG: KCSAN: data-race in irdma_cqp_ce_handler [irdma] / irdma_wait_event [irdma]
[222808.417532] write to 0xffff8e44107019dc of 1 bytes by task 29658 on cpu 5:
[222808.417610] irdma_cqp_ce_handler+0x21e/0x270 [irdma]
[222808.417725] cqp_compl_worker+0x1b/0x20 [irdma]
[222808.417827] process_one_work+0x4d1/0xa40
[222808.417835] worker_thread+0x319/0x700
[222808.417842] kthread+0x180/0x1b0
[222808.417849] ret_from_fork+0x22/0x30
[222808.417857] read to 0xffff8e44107019dc of 1 bytes by task 29658 on cpu 5:
[222808.417864] irdma_wait_event+0x23/0x40 [irdma]
[222808.417871] irdma_handle_cqp_op+0x113/0x130 [irdma]
[222808.417878] irdma_cqp_send_msg+0x10/0x20 [irdma]
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