{"id":"AZL-53594","summary":"CVE-2024-50155 affecting package kernel for versions less than 6.6.64.2-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetdevsim: use cond_resched() in nsim_dev_trap_report_work()\n\nI am still seeing many syzbot reports hinting that syzbot\nmight fool nsim_dev_trap_report_work() with hundreds of ports [1]\n\nLets use cond_resched(), and system_unbound_wq\ninstead of implicit system_wq.\n\n[1]\nINFO: task syz-executor:20633 blocked for more than 143 seconds.\n      Not tainted 6.12.0-rc2-syzkaller-00205-g1d227fcc7222 #0\n\"echo 0 \u003e /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\ntask:syz-executor    state:D stack:25856 pid:20633 tgid:20633 ppid:1      flags:0x00004006\n...\nNMI backtrace for cpu 1\nCPU: 1 UID: 0 PID: 16760 Comm: kworker/1:0 Not tainted 6.12.0-rc2-syzkaller-00205-g1d227fcc7222 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024\nWorkqueue: events nsim_dev_trap_report_work\n RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210\nCode: 89 fb e8 23 00 00 00 48 8b 3d 04 fb 9c 0c 48 89 de 5b e9 c3 c7 5d 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 \u003cf3\u003e 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 c0 d7 03 00 65 8b 15 60 f0\nRSP: 0018:ffffc90000a187e8 EFLAGS: 00000246\nRAX: 0000000000000100 RBX: ffffc90000a188e0 RCX: ffff888027d3bc00\nRDX: ffff888027d3bc00 RSI: 0000000000000000 RDI: 0000000000000000\nRBP: ffff88804a2e6000 R08: ffffffff8a4bc495 R09: ffffffff89da3577\nR10: 0000000000000004 R11: ffffffff8a4bc2b0 R12: dffffc0000000000\nR13: ffff88806573b503 R14: dffffc0000000000 R15: ffff8880663cca00\nFS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007fc90a747f98 CR3: 000000000e734000 CR4: 00000000003526f0\nDR0: 0000000000000000 DR1: 000000000000002b DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cNMI\u003e\n \u003c/NMI\u003e\n \u003cTASK\u003e\n  __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382\n  spin_unlock_bh include/linux/spinlock.h:396 [inline]\n  nsim_dev_trap_report drivers/net/netdevsim/dev.c:820 [inline]\n  nsim_dev_trap_report_work+0x75d/0xaa0 drivers/net/netdevsim/dev.c:850\n  process_one_work kernel/workqueue.c:3229 [inline]\n  process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310\n  worker_thread+0x870/0xd30 kernel/workqueue.c:3391\n  kthread+0x2f0/0x390 kernel/kthread.c:389\n  ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n \u003c/TASK\u003e","modified":"2026-04-01T05:16:34.345393Z","published":"2024-11-07T10:15:07Z","upstream":["CVE-2024-50155"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-50155"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.6.64.2-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-53594.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}