{"cve":"CVE-2022-50171","nvd":{"published":"2025-06-18T11:15:47.443","modified":"2026-08-04T10:18:06.700","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: hisilicon/sec - don't sleep when in softirq\n\nWhen kunpeng920 encryption driver is used to deencrypt and decrypt\npackets during the softirq, it is not allowed to use mutex lock. The\nkernel will report the following error:\n\nBUG: scheduling while atomic: swapper/57/0/0x00000300\nCall trace:\ndump_backtrace+0x0/0x1e4\nshow_stack+0x20/0x2c\ndump_stack+0xd8/0x140\n__schedule_bug+0x68/0x80\n__schedule+0x728/0x840\nschedule+0x50/0xe0\nschedule_preempt_disabled+0x18/0x24\n__mutex_lock.constprop.0+0x594/0x5dc\n__mutex_lock_slowpath+0x1c/0x30\nmutex_lock+0x50/0x60\nsec_request_init+0x8c/0x1a0 [hisi_sec2]\nsec_process+0x28/0x1ac [hisi_sec2]\nsec_skcipher_crypto+0xf4/0x1d4 [hisi_sec2]\nsec_skcipher_encrypt+0x1c/0x30 [hisi_sec2]\ncrypto_skcipher_encrypt+0x2c/0x40\ncrypto_authenc_encrypt+0xc8/0xfc [authenc]\ncrypto_aead_encrypt+0x2c/0x40\nechainiv_encrypt+0x144/0x1a0 [echainiv]\ncrypto_aead_encrypt+0x2c/0x40\nesp_output_tail+0x348/0x5c0 [esp4]\nesp_output+0x120/0x19c [esp4]\nxfrm_output_one+0x25c/0x4d4\nxfrm_output_resume+0x6c/0x1fc\nxfrm_output+0xac/0x3c0\nxfrm4_output+0x64/0x130\nip_build_and_send_pkt+0x158/0x20c\ntcp_v4_send_synack+0xdc/0x1f0\ntcp_conn_request+0x7d0/0x994\ntcp_v4_conn_request+0x58/0x6c\ntcp_v6_conn_request+0xf0/0x100\ntcp_rcv_state_process+0x1cc/0xd60\ntcp_v4_do_rcv+0x10c/0x250\ntcp_v4_rcv+0xfc4/0x10a4\nip_protocol_deliver_rcu+0xf4/0x200\nip_local_deliver_finish+0x58/0x70\nip_local_deliver+0x68/0x120\nip_sublist_rcv_finish+0x70/0x94\nip_list_rcv_finish.constprop.0+0x17c/0x1d0\nip_sublist_rcv+0x40/0xb0\nip_list_rcv+0x140/0x1dc\n__netif_receive_skb_list_core+0x154/0x28c\n__netif_receive_skb_list+0x120/0x1a0\nnetif_receive_skb_list_internal+0xe4/0x1f0\nnapi_complete_done+0x70/0x1f0\ngro_cell_poll+0x9c/0xb0\nnapi_poll+0xcc/0x264\nnet_rx_action+0xd4/0x21c\n__do_softirq+0x130/0x358\nirq_exit+0x11c/0x13c\n__handle_domain_irq+0x88/0xf0\ngic_handle_irq+0x78/0x2c0\nel1_irq+0xb8/0x140\narch_cpu_idle+0x18/0x40\ndefault_idle_call+0x5c/0x1c0\ncpuidle_idle_call+0x174/0x1b0\ndo_idle+0xc8/0x160\ncpu_startup_entry+0x30/0x11c\nsecondary_start_kernel+0x158/0x1e4\nsoftirq: huh, entered softirq 3 NET_RX 0000000093774ee4 with\npreempt_count 00000100, exited with fffffe00?","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/02884a4f12de11f54d4ca67a07dd1f111d96fdbd","https://git.kernel.org/stable/c/16e18a8ac7c9748cf35a8d2f0ba2c6e8850e7568","https://git.kernel.org/stable/c/4a461ba5b9753352f438824fdd915cba675b1733","https://git.kernel.org/stable/c/aa495dfe71229b9034b59d8072ff0b2325ddd5ee","https://git.kernel.org/stable/c/c9be45e4c69fde36522274f04d1aa0d097ae3958"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:03:23.287444849+00:00"},"epss":{"cve":"CVE-2022-50171","score":0.00368,"percentile":0.30697,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}