{“lastseen”:””,”description”:”In the Linux kernel, the following vulnerability has been resolved:\\n\\nmptcp: fix soft lockup in mptcp_recvmsg()\\n\\nsyzbot reported a soft lockup in mptcp_recvmsg() [0].\\n\\nWhen receiving data with MSG_PEEK | MSG_WAITALL flags, the skb is not\\nremoved from the sk_receive_queue. This causes sk_wait_data() to always\\nfind available data and never perform actual waiting, leading to a soft\\nlockup.\\n\\nFix this by adding a ‘last’ parameter to track the last peeked skb.\\nThis allows sk_wait_data() to make informed waiting decisions and prevent\\ninfinite loops when MSG_PEEK is used.\\n\\n[0]:\\nwatchdog: BUG: soft lockup – CPU#2 stuck for 156s! [server:1963]\\nModules linked in:\\nCPU: 2 UID: 0 PID: 1963 Comm: server Not tainted 6.19.0-rc8 #61 PREEMPT(none)\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04\/01\/2014\\nRIP: 0010:sk_wait_data+0x15\/0x190\\nCode: 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 56 41 55 41 54 49 89 f4 55 48 89 d5 53 48 89 fb \\u003c48\\u003e 83 ec 30 65 48 8b 05 17 a4 6b 01 48 89 44 24 28 31 c0 65 48 8b\\nRSP: 0018:ffffc90000603ca0 EFLAGS: 00000246\\nRAX: 0000000000000000 RBX: ffff888102bf0800 RCX: 0000000000000001\\nRDX: 0000000000000000 RSI: ffffc90000603d18 RDI: ffff888102bf0800\\nRBP: 0000000000000000 R08: 0000000000000002 R09: 0000000000000101\\nR10: 0000000000000000 R11: 0000000000000075 R12: ffffc90000603d18\\nR13: ffff888102bf0800 R14: ffff888102bf0800 R15: 0000000000000000\\nFS: 00007f6e38b8c4c0(0000) GS:ffff8881b877e000(0000) knlGS:0000000000000000\\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 000055aa7bff1680 CR3: 0000000105cbe000 CR4: 00000000000006f0\\nCall Trace:\\n \\u003cTASK\\u003e\\n mptcp_recvmsg+0x547\/0x8c0 net\/mptcp\/protocol.c:2329\\n inet_recvmsg+0x11f\/0x130 net\/ipv4\/af_inet.c:891\\n sock_recvmsg+0x94\/0xc0 net\/socket.c:1100\\n __sys_recvfrom+0xb2\/0x130 net\/socket.c:2256\\n __x64_sys_recvfrom+0x1f\/0x30 net\/socket.c:2267\\n do_syscall_64+0x59\/0x2d0 arch\/x86\/entry\/syscall_64.c:94\\n entry_SYSCALL_64_after_hwframe+0x76\/0x7e arch\/x86\/entry\/entry_64.S:131\\nRIP: 0033:0x7f6e386a4a1d\\nCode: 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 8d 05 f1 de 2c 00 41 89 ca 8b 00 85 c0 75 20 45 31 c9 45 31 c0 b8 2d 00 00 00 0f 05 \\u003c48\\u003e 3d 00 f0 ff ff 77 6b f3 c3 66 0f 1f 84 00 00 00 00 00 41 56 41\\nRSP: 002b:00007ffc3c4bb078 EFLAGS: 00000246 ORIG_RAX: 000000000000002d\\nRAX: ffffffffffffffda RBX: 000000000000861e RCX: 00007f6e386a4a1d\\nRDX: 00000000000003ff RSI: 00007ffc3c4bb150 RDI: 0000000000000004\\nRBP: 00007ffc3c4bb570 R08: 0000000000000000 R09: 0000000000000000\\nR10: 0000000000000103 R11: 0000000000000246 R12: 00005605dbc00be0\\nR13: 00007ffc3c4bb650 R14: 0000000000000000 R15: 0000000000000000\\n \\u003c\/TASK\\u003e”,”published”:”2026-05-01T14:15:29.885Z”,”modified”:”2026-05-03T05:46:11.595Z”,”type”:”cve”,”title”:”mptcp: fix soft lockup in mptcp_recvmsg()”,”source”:”Linux”,”references”:”https:\/\/git.kernel.org\/stable\/c\/58b58b9ba89c43914eea90c18928e51852d10c24\\nhttps:\/\/git.kernel.org\/stable\/c\/de3c248d1b69eaefa2d5b3da4005936dcf590f1b\\nhttps:\/\/git.kernel.org\/stable\/c\/5dd8025a49c268ab6b94d978532af3ad341132a7″,”id”:”CVE-2026-43029″,”bulletinFamily”:””,”cwe”:null,”cvelist”:null,”sourceData”:”Linux Linux 8e04ce45a8db7a080220e86e249198fa676b83dc\\nLinux Linux 8e04ce45a8db7a080220e86e249198fa676b83dc\\nLinux Linux 8e04ce45a8db7a080220e86e249198fa676b83dc\\nLinux Linux 49888b3b457b801282b44c246d289c56e2f2a55b\\nLinux Linux 0206a9341e652167c610dcd79f3d4e9e8153984c\\nLinux Linux 7d6d10eee01edc9c20850ea75cf8273dc1170921\\nLinux Linux 6.18″,”sourceHref”:””,”cvss”:{“score”:7.5,”severity”:”HIGH”,”vector”:”CVSS:3.1\/AV:N\/AC:L\/PR:N\/UI:N\/S:U\/C:N\/I:N\/A:H”,”version”:”3.1″},”cvss2″:{},”cvss3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””,”cvssV3″:{“version”:””,”vectorString”:””,”baseScore”:0,”baseSeverity”:””,”attackVector”:””,”attackComplexity”:””,”privilegesRequired”:””,”userInteraction”:””,”scope”:””,”confidentialityImpact”:””,”integrityImpact”:””,”availabilityImpact”:””}},”href”:””,”category_name”:”CVE”,”post_link”:””,”product”:”Linux”,”version”:”8e04ce45a8db7a080220e86e249198fa676b83dc”,”vendor”:”Linux”,”ai_description”:””,”ai_severity”:””,”ai_vendor”:””,”ai_product”:””,”ai_version”:””,”ai_score”:0}<\/p>\n","protected":false},"excerpt":{"rendered":"
{“lastseen”:””,”description”:”In the Linux kernel, the following vulnerability has been resolved:\\n\\nmptcp: fix soft lockup in mptcp_recvmsg()\\n\\nsyzbot reported a soft lockup in mptcp_recvmsg() [0].\\n\\nWhen receiving data with…<\/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-51006","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":"\n