{"id":"CVE-2026-43469","title":"xprtrdma: Decrement re_receiving on the early exit paths","summary":"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) …","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 7ea69259a60a364f56cf4aa9e2eafb588d1c762b","Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 8cb6b5d8296b1f99a8d36849901ebabfe3f749db","Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 74c39a47856bddcde7874f2196a00143b5cd0af9","Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 49f53ee4e25297d886f14e31f355ad1c2735ddfb","Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 8127b5fec04757c2a41ed65bca0b3266968efd3b","Linux >= 15788d1d1077ebe029c48842c738876516d85076 < dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddf","Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 7b6275c80a0c81c5f8943272292dfe67730ce849","Linux 5.13"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-16T15:17:41.397506Z"},"published":"2026-05-08","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:20:42.799Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43469","references":[{"url":"https://git.kernel.org/stable/c/7ea69259a60a364f56cf4aa9e2eafb588d1c762b"},{"url":"https://git.kernel.org/stable/c/8cb6b5d8296b1f99a8d36849901ebabfe3f749db"},{"url":"https://git.kernel.org/stable/c/74c39a47856bddcde7874f2196a00143b5cd0af9"},{"url":"https://git.kernel.org/stable/c/49f53ee4e25297d886f14e31f355ad1c2735ddfb"},{"url":"https://git.kernel.org/stable/c/8127b5fec04757c2a41ed65bca0b3266968efd3b"},{"url":"https://git.kernel.org/stable/c/dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddf"},{"url":"https://git.kernel.org/stable/c/7b6275c80a0c81c5f8943272292dfe67730ce849"}],"tags":["cve.org"],"epss":0.007,"epssPercentile":0.52217,"ingestedAt":"2026-10-16T17:24:46.697Z","slug":"CVE-2026-43469","body":"## Overview\n\nIn 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\n\n## Affected\n\n- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 7ea69259a60a364f56cf4aa9e2eafb588d1c762b`\n- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 8cb6b5d8296b1f99a8d36849901ebabfe3f749db`\n- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 74c39a47856bddcde7874f2196a00143b5cd0af9`\n- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 49f53ee4e25297d886f14e31f355ad1c2735ddfb`\n- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 8127b5fec04757c2a41ed65bca0b3266968efd3b`\n- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddf`\n- `Linux >= 15788d1d1077ebe029c48842c738876516d85076 < 7b6275c80a0c81c5f8943272292dfe67730ce849`\n- `Linux 5.13`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}