{"id":52924,"date":"2026-05-11T04:12:44","date_gmt":"2026-05-11T04:12:44","guid":{"rendered":"https:\/\/zero.redgem.net\/?p=52924"},"modified":"2026-05-11T04:12:44","modified_gmt":"2026-05-11T04:12:44","slug":"xprtrdma-decrement-rereceiving-on-the-early-exit-paths","status":"publish","type":"post","link":"https:\/\/zero.redgem.net\/?p=52924","title":{"rendered":"xprtrdma: Decrement re_receiving on the early exit paths_CVE-2026-43469"},"content":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;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-\\u003ere_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    \\&#8221;echo 0 \\u003e \/proc\/sys\/kernel\/hung_task_timeout_secs\\&#8221; 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     \\u003cTASK\\u003e\\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&#8243;,&#8221;published&#8221;:&#8221;2026-05-08T14:22:29.550Z&#8221;,&#8221;modified&#8221;:&#8221;2026-05-11T06:34:57.133Z&#8221;,&#8221;type&#8221;:&#8221;cve&#8221;,&#8221;title&#8221;:&#8221;xprtrdma: Decrement re_receiving on the early exit paths&#8221;,&#8221;source&#8221;:&#8221;Linux&#8221;,&#8221;references&#8221;:&#8221;https:\/\/git.kernel.org\/stable\/c\/7ea69259a60a364f56cf4aa9e2eafb588d1c762b\\nhttps:\/\/git.kernel.org\/stable\/c\/8cb6b5d8296b1f99a8d36849901ebabfe3f749db\\nhttps:\/\/git.kernel.org\/stable\/c\/74c39a47856bddcde7874f2196a00143b5cd0af9\\nhttps:\/\/git.kernel.org\/stable\/c\/49f53ee4e25297d886f14e31f355ad1c2735ddfb\\nhttps:\/\/git.kernel.org\/stable\/c\/8127b5fec04757c2a41ed65bca0b3266968efd3b\\nhttps:\/\/git.kernel.org\/stable\/c\/dc3ebd7e2d73dbd4d317785735ffa6c4a6384ddf\\nhttps:\/\/git.kernel.org\/stable\/c\/7b6275c80a0c81c5f8943272292dfe67730ce849&#8243;,&#8221;id&#8221;:&#8221;CVE-2026-43469&#8243;,&#8221;bulletinFamily&#8221;:&#8221;&#8221;,&#8221;cwe&#8221;:null,&#8221;cvelist&#8221;:null,&#8221;sourceData&#8221;:&#8221;Linux Linux 15788d1d1077ebe029c48842c738876516d85076\\nLinux Linux 15788d1d1077ebe029c48842c738876516d85076\\nLinux Linux 15788d1d1077ebe029c48842c738876516d85076\\nLinux Linux 15788d1d1077ebe029c48842c738876516d85076\\nLinux Linux 15788d1d1077ebe029c48842c738876516d85076\\nLinux Linux 15788d1d1077ebe029c48842c738876516d85076\\nLinux Linux 15788d1d1077ebe029c48842c738876516d85076\\nLinux Linux 5.13&#8243;,&#8221;sourceHref&#8221;:&#8221;&#8221;,&#8221;cvss&#8221;:{&#8220;score&#8221;:7.5,&#8221;severity&#8221;:&#8221;HIGH&#8221;,&#8221;vector&#8221;:&#8221;CVSS:3.1\/AV:N\/AC:L\/PR:N\/UI:N\/S:U\/C:N\/I:N\/A:H&#8221;,&#8221;version&#8221;:&#8221;3.1&#8243;},&#8221;cvss2&#8243;:{},&#8221;cvss3&#8243;:{&#8220;version&#8221;:&#8221;&#8221;,&#8221;vectorString&#8221;:&#8221;&#8221;,&#8221;baseScore&#8221;:0,&#8221;baseSeverity&#8221;:&#8221;&#8221;,&#8221;attackVector&#8221;:&#8221;&#8221;,&#8221;attackComplexity&#8221;:&#8221;&#8221;,&#8221;privilegesRequired&#8221;:&#8221;&#8221;,&#8221;userInteraction&#8221;:&#8221;&#8221;,&#8221;scope&#8221;:&#8221;&#8221;,&#8221;confidentialityImpact&#8221;:&#8221;&#8221;,&#8221;integrityImpact&#8221;:&#8221;&#8221;,&#8221;availabilityImpact&#8221;:&#8221;&#8221;,&#8221;cvssV3&#8243;:{&#8220;version&#8221;:&#8221;&#8221;,&#8221;vectorString&#8221;:&#8221;&#8221;,&#8221;baseScore&#8221;:0,&#8221;baseSeverity&#8221;:&#8221;&#8221;,&#8221;attackVector&#8221;:&#8221;&#8221;,&#8221;attackComplexity&#8221;:&#8221;&#8221;,&#8221;privilegesRequired&#8221;:&#8221;&#8221;,&#8221;userInteraction&#8221;:&#8221;&#8221;,&#8221;scope&#8221;:&#8221;&#8221;,&#8221;confidentialityImpact&#8221;:&#8221;&#8221;,&#8221;integrityImpact&#8221;:&#8221;&#8221;,&#8221;availabilityImpact&#8221;:&#8221;&#8221;}},&#8221;href&#8221;:&#8221;&#8221;,&#8221;category_name&#8221;:&#8221;CVE&#8221;,&#8221;post_link&#8221;:&#8221;&#8221;,&#8221;product&#8221;:&#8221;Linux&#8221;,&#8221;version&#8221;:&#8221;15788d1d1077ebe029c48842c738876516d85076&#8243;,&#8221;vendor&#8221;:&#8221;Linux&#8221;,&#8221;ai_description&#8221;:&#8221;&#8221;,&#8221;ai_severity&#8221;:&#8221;&#8221;,&#8221;ai_vendor&#8221;:&#8221;&#8221;,&#8221;ai_product&#8221;:&#8221;&#8221;,&#8221;ai_version&#8221;:&#8221;&#8221;,&#8221;ai_score&#8221;:0}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>{&#8220;lastseen&#8221;:&#8221;&#8221;,&#8221;description&#8221;:&#8221;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&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[6,8,16,12,15,13,7,11,5],"class_list":["post-52924","post","type-post","status-publish","format-standard","hentry","category-category_cve","tag-cve","tag-cvss","tag-cvss-75","tag-exploit","tag-high","tag-news","tag-security","tag-tapic","tag-vulnerability"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>xprtrdma: Decrement re_receiving on the early exit paths_CVE-2026-43469 - zero redgem<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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