CVE-2026-43469
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: xprtrdma: Decrement re_receiving on the early exit paths In the event that rpcrdma_post_recvs() fails to create a work request (due to memory allocation failure, say) or otherwise exits early, we should decrement ep->re_receiving before returning. Otherwise we will hang in rpcrdma_xprt_drain() as re_receiving will never reach zero and the completion will never be triggered. On a system with high memory pressure, this can appear as the following hung task: INFO: task kworker/u385:17:8393 blocked for more than 122 seconds. Tainted: G S E 6.19.0 #3 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u385:17 state:D stack:0 pid:8393 tgid:8393 ppid:2 task_flags:0x4248060 flags:0x00080000 Workqueue: xprtiod xprt_autoclose [sunrpc] Call Trace: <TASK> __schedule+0x48b/0x18b0 ? ib_post_send_mad+0x247/0xae0 [ib_core] schedule+0x27/0xf0 schedule_timeout+0x104/0x110 __wait_for_common+0x98/0x180 ? __pfx_schedule_timeout+0x10/0x10 wait_for_completion+0x24/0x40 rpcrdma_xprt_disconnect+0x444/0x460 [rpcrdma] xprt_rdma_close+0x12/0x40 [rpcrdma] xprt_autoclose+0x5f/0x120 [sunrpc] process_one_work+0x191/0x3e0 worker_thread+0x2e3/0x420 ? __pfx_worker_thread+0x10/0x10 kthread+0x10d/0x230 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x273/0x2b0 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30
Severity
HIGH
CVSS score
7.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-05-08 15:16:59.957000
Last modified
2026-10-19 20:18:18.237000
View original CVE JSON
{
"id": "CVE-2026-43469",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-05-08T15:16:59.957",
"lastModified": "2026-10-19T20:18:18.237",
"vulnStatus": "Modified",
"cveTags": [],
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{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxprtrdma: Decrement re_receiving on the early exit paths\n\nIn the event that rpcrdma_post_recvs() fails to create a work request\n(due to memory allocation failure, say) or otherwise exits early, we\nshould decrement ep->re_receiving before returning. Otherwise we will\nhang in rpcrdma_xprt_drain() as re_receiving will never reach zero and\nthe completion will never be triggered.\n\nOn a system with high memory pressure, this can appear as the following\nhung task:\n\n INFO: task kworker/u385:17:8393 blocked for more than 122 seconds.\n Tainted: G S E 6.19.0 #3\n \"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\n task:kworker/u385:17 state:D stack:0 pid:8393 tgid:8393 ppid:2 task_flags:0x4248060 flags:0x00080000\n Workqueue: xprtiod xprt_autoclose [sunrpc]\n Call Trace:\n <TASK>\n __schedule+0x48b/0x18b0\n ? ib_post_send_mad+0x247/0xae0 [ib_core]\n schedule+0x27/0xf0\n schedule_timeout+0x104/0x110\n __wait_for_common+0x98/0x180\n ? __pfx_schedule_timeout+0x10/0x10\n wait_for_completion+0x24/0x40\n rpcrdma_xprt_disconnect+0x444/0x460 [rpcrdma]\n xprt_rdma_close+0x12/0x40 [rpcrdma]\n xprt_autoclose+0x5f/0x120 [sunrpc]\n process_one_work+0x191/0x3e0\n worker_thread+0x2e3/0x420\n ? __pfx_worker_thread+0x10/0x10\n kthread+0x10d/0x230\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x273/0x2b0\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30"
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