{"id":"DEBIAN-CVE-2024-50095","details":"In the Linux kernel, the following vulnerability has been resolved:  RDMA/mad: Improve handling of timed out WRs of mad agent  Current timeout handler of mad agent acquires/releases mad_agent_priv lock for every timed out WRs. This causes heavy locking contention when higher no. of WRs are to be handled inside timeout handler.  This leads to softlockup with below trace in some use cases where rdma-cm path is used to establish connection between peer nodes  Trace: -----  BUG: soft lockup - CPU#4 stuck for 26s! [kworker/u128:3:19767]  CPU: 4 PID: 19767 Comm: kworker/u128:3 Kdump: loaded Tainted: G OE      -------  ---  5.14.0-427.13.1.el9_4.x86_64 #1  Hardware name: Dell Inc. PowerEdge R740/01YM03, BIOS 2.4.8 11/26/2019  Workqueue: ib_mad1 timeout_sends [ib_core]  RIP: 0010:__do_softirq+0x78/0x2ac  RSP: 0018:ffffb253449e4f98 EFLAGS: 00000246  RAX: 00000000ffffffff RBX: 0000000000000000 RCX: 000000000000001f  RDX: 000000000000001d RSI: 000000003d1879ab RDI: fff363b66fd3a86b  RBP: ffffb253604cbcd8 R08: 0000009065635f3b R09: 0000000000000000  R10: 0000000000000040 R11: ffffb253449e4ff8 R12: 0000000000000000  R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000040  FS:  0000000000000000(0000) GS:ffff8caa1fc80000(0000) knlGS:0000000000000000  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033  CR2: 00007fd9ec9db900 CR3: 0000000891934006 CR4: 00000000007706e0  DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000  DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400  PKRU: 55555554  Call Trace:   \u003cIRQ\u003e   ? show_trace_log_lvl+0x1c4/0x2df   ? show_trace_log_lvl+0x1c4/0x2df   ? __irq_exit_rcu+0xa1/0xc0   ? watchdog_timer_fn+0x1b2/0x210   ? __pfx_watchdog_timer_fn+0x10/0x10   ? __hrtimer_run_queues+0x127/0x2c0   ? hrtimer_interrupt+0xfc/0x210   ? __sysvec_apic_timer_interrupt+0x5c/0x110   ? sysvec_apic_timer_interrupt+0x37/0x90   ? asm_sysvec_apic_timer_interrupt+0x16/0x20   ? __do_softirq+0x78/0x2ac   ? __do_softirq+0x60/0x2ac   __irq_exit_rcu+0xa1/0xc0   sysvec_call_function_single+0x72/0x90   \u003c/IRQ\u003e   \u003cTASK\u003e   asm_sysvec_call_function_single+0x16/0x20  RIP: 0010:_raw_spin_unlock_irq+0x14/0x30  RSP: 0018:ffffb253604cbd88 EFLAGS: 00000247  RAX: 000000000001960d RBX: 0000000000000002 RCX: ffff8cad2a064800  RDX: 000000008020001b RSI: 0000000000000001 RDI: ffff8cad5d39f66c  RBP: ffff8cad5d39f600 R08: 0000000000000001 R09: 0000000000000000  R10: ffff8caa443e0c00 R11: ffffb253604cbcd8 R12: ffff8cacb8682538  R13: 0000000000000005 R14: ffffb253604cbd90 R15: ffff8cad5d39f66c   cm_process_send_error+0x122/0x1d0 [ib_cm]   timeout_sends+0x1dd/0x270 [ib_core]   process_one_work+0x1e2/0x3b0   ? __pfx_worker_thread+0x10/0x10   worker_thread+0x50/0x3a0   ? __pfx_worker_thread+0x10/0x10   kthread+0xdd/0x100   ? __pfx_kthread+0x10/0x10   ret_from_fork+0x29/0x50   \u003c/TASK\u003e  Simplified timeout handler by creating local list of timed out WRs and invoke send handler post creating the list. The new method acquires/ releases lock once to fetch the list and hence helps to reduce locking contetiong when processing higher no. of WRs","modified":"2026-09-15T09:03:15.418215154Z","published":"2024-11-05T17:15:06.797Z","upstream":["CVE-2024-50095"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2024-50095"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.115-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-50095.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.11.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-50095.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.11.4-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-50095.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}