{ "document": { "aggregate_severity": { "text": "High" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/centos8.5els/vex/2022/cve-2022-50408-els_os-centos8_5els.json" } ], "title": "Security update on CVE-2022-50408", "tracking": { "current_release_date": "2025-12-23T22:15:38Z", "generator": { "date": "2025-12-23T22:15:38Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2022-50408-ELS_OS-CENTOS8.5ELS", "initial_release_date": "2022-01-01T00:00:00Z", "revision_history": [ { "date": "2022-01-01T00:00:00Z", "number": "1", "summary": "Initial version" }, { "date": "2025-11-21T14:27:28Z", "number": "2", "summary": "Official Publication" }, { "date": "2025-12-23T22:15:38Z", "number": "3", "summary": "Update document" } ], "status": "final", "version": "2" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Community Enterprise Operating System 8.5", "product": { "name": "Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5", "product_identification_helper": { "cpe": "cpe:2.3:o:centos:centos:8.5:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Community Enterprise Operating System" } ], "category": "vendor", "name": "Red Hat, Inc." }, { "branches": [ { "branches": [ { "category": "product_version", "name": "kernel-tools-libs-devel-0:4.18.0-348.7.1.el8_5.tuxcare.els32.x86_64", "product": { "name": "kernel-tools-libs-devel-0:4.18.0-348.7.1.el8_5.tuxcare.els32.x86_64", "product_id": "kernel-tools-libs-devel-0:4.18.0-348.7.1.el8_5.tuxcare.els32.x86_64", "product_identification_helper": { 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"kernel-ipaclones-internal-4.18.0-348.7.1.el8_5.x86_64 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:kernel-ipaclones-internal-4.18.0-348.7.1.el8_5.x86_64" }, "product_reference": "kernel-ipaclones-internal-4.18.0-348.7.1.el8_5.x86_64", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-core-4.18.0-348.7.1.el8_5.x86_64 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:kernel-core-4.18.0-348.7.1.el8_5.x86_64" }, "product_reference": "kernel-core-4.18.0-348.7.1.el8_5.x86_64", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-debug-4.18.0-348.7.1.el8_5.x86_64 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:kernel-debug-4.18.0-348.7.1.el8_5.x86_64" }, "product_reference": "kernel-debug-4.18.0-348.7.1.el8_5.x86_64", "relates_to_product_reference": "CentOS-8.5" }, { "category": "default_component_of", "full_product_name": { "name": "kernel-4.18.0-348.7.1.el8_5.x86_64 as a component of Community Enterprise Operating System 8.5", "product_id": "CentOS-8.5:kernel-4.18.0-348.7.1.el8_5.x86_64" }, "product_reference": "kernel-4.18.0-348.7.1.el8_5.x86_64", "relates_to_product_reference": "CentOS-8.5" } ] }, "vulnerabilities": [ { "cve": "CVE-2022-50408", "cwe": { "id": "CWE-416", "name": "Use After Free" }, "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\nwifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit()\n> ret = brcmf_proto_tx_queue_data(drvr, ifp->ifidx, skb);\nmay be schedule, and then complete before the line\n> ndev->stats.tx_bytes += skb->len;\n[ 46.912801] ==================================================================\n[ 46.920552] BUG: KASAN: use-after-free in brcmf_netdev_start_xmit+0x718/0x8c8 [brcmfmac]\n[ 46.928673] Read of size 4 at addr ffffff803f5882e8 by task systemd-resolve/328\n[ 46.935991]\n[ 46.937514] CPU: 1 PID: 328 Comm: systemd-resolve Tainted: G O 5.4.199-[REDACTED] #1\n[ 46.947255] Hardware name: [REDACTED]\n[ 46.954568] Call trace:\n[ 46.957037] dump_backtrace+0x0/0x2b8\n[ 46.960719] show_stack+0x24/0x30\n[ 46.964052] dump_stack+0x128/0x194\n[ 46.967557] print_address_description.isra.0+0x64/0x380\n[ 46.972877] __kasan_report+0x1d4/0x240\n[ 46.976723] kasan_report+0xc/0x18\n[ 46.980138] __asan_report_load4_noabort+0x18/0x20\n[ 46.985027] brcmf_netdev_start_xmit+0x718/0x8c8 [brcmfmac]\n[ 46.990613] dev_hard_start_xmit+0x1bc/0xda0\n[ 46.994894] sch_direct_xmit+0x198/0xd08\n[ 46.998827] __qdisc_run+0x37c/0x1dc0\n[ 47.002500] __dev_queue_xmit+0x1528/0x21f8\n[ 47.006692] dev_queue_xmit+0x24/0x30\n[ 47.010366] neigh_resolve_output+0x37c/0x678\n[ 47.014734] ip_finish_output2+0x598/0x2458\n[ 47.018927] __ip_finish_output+0x300/0x730\n[ 47.023118] ip_output+0x2e0/0x430\n[ 47.026530] ip_local_out+0x90/0x140\n[ 47.030117] igmpv3_sendpack+0x14c/0x228\n[ 47.034049] igmpv3_send_cr+0x384/0x6b8\n[ 47.037895] igmp_ifc_timer_expire+0x4c/0x118\n[ 47.042262] call_timer_fn+0x1cc/0xbe8\n[ 47.046021] __run_timers+0x4d8/0xb28\n[ 47.049693] run_timer_softirq+0x24/0x40\n[ 47.053626] __do_softirq+0x2c0/0x117c\n[ 47.057387] irq_exit+0x2dc/0x388\n[ 47.060715] __handle_domain_irq+0xb4/0x158\n[ 47.064908] gic_handle_irq+0x58/0xb0\n[ 47.068581] el0_irq_naked+0x50/0x5c\n[ 47.072162]\n[ 47.073665] Allocated by task 328:\n[ 47.077083] save_stack+0x24/0xb0\n[ 47.080410] __kasan_kmalloc.isra.0+0xc0/0xe0\n[ 47.084776] kasan_slab_alloc+0x14/0x20\n[ 47.088622] kmem_cache_alloc+0x15c/0x468\n[ 47.092643] __alloc_skb+0xa4/0x498\n[ 47.096142] igmpv3_newpack+0x158/0xd78\n[ 47.099987] add_grhead+0x210/0x288\n[ 47.103485] add_grec+0x6b0/0xb70\n[ 47.106811] igmpv3_send_cr+0x2e0/0x6b8\n[ 47.110657] igmp_ifc_timer_expire+0x4c/0x118\n[ 47.115027] call_timer_fn+0x1cc/0xbe8\n[ 47.118785] __run_timers+0x4d8/0xb28\n[ 47.122457] run_timer_softirq+0x24/0x40\n[ 47.126389] __do_softirq+0x2c0/0x117c\n[ 47.130142]\n[ 47.131643] Freed by task 180:\n[ 47.134712] save_stack+0x24/0xb0\n[ 47.138041] __kasan_slab_free+0x108/0x180\n[ 47.142146] kasan_slab_free+0x10/0x18\n[ 47.145904] slab_free_freelist_hook+0xa4/0x1b0\n[ 47.150444] kmem_cache_free+0x8c/0x528\n[ 47.154292] kfree_skbmem+0x94/0x108\n[ 47.157880] consume_skb+0x10c/0x5a8\n[ 47.161466] __dev_kfree_skb_any+0x88/0xa0\n[ 47.165598] brcmu_pkt_buf_free_skb+0x44/0x68 [brcmutil]\n[ 47.171023] brcmf_txfinalize+0xec/0x190 [brcmfmac]\n[ 47.176016] brcmf_proto_bcdc_txcomplete+0x1c0/0x210 [brcmfmac]\n[ 47.182056] brcmf_sdio_sendfromq+0x8dc/0x1e80 [brcmfmac]\n[ 47.187568] brcmf_sdio_dpc+0xb48/0x2108 [brcmfmac]\n[ 47.192529] brcmf_sdio_dataworker+0xc8/0x238 [brcmfmac]\n[ 47.197859] process_one_work+0x7fc/0x1a80\n[ 47.201965] worker_thread+0x31c/0xc40\n[ 47.205726] kthread+0x2d8/0x370\n[ 47.208967] ret_from_fork+0x10/0x18\n[ 47.212546]\n[ 47.214051] The buggy address belongs to the object at ffffff803f588280\n[ 47.214051] which belongs to the cache skbuff_head_cache of size 208\n[ 47.227086] The buggy address is located 104 bytes inside of\n[ 47.227086] 208-byte region [ffffff803f588280, ffffff803f588350)\n[ 47.238814] The buggy address belongs to the page:\n[ 47.243618] page:ffffffff00dd6200 refcount:1 mapcou\n---truncated---", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "CentOS-8.5:bpftool-0:4.18.0-348.7.1.el8_5.tuxcare.els32.x86_64", "CentOS-8.5:kernel-0:4.18.0-348.7.1.el8_5.tuxcare.els32.x86_64", "CentOS-8.5:kernel-core-0:4.18.0-348.7.1.el8_5.tuxcare.els32.x86_64", 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"CentOS-8.5:kernel-modules-internal-0:4.18.0-348.7.1.el8_5.tuxcare.els32.x86_64", "CentOS-8.5:kernel-selftests-internal-0:4.18.0-348.7.1.el8_5.tuxcare.els32.x86_64", "CentOS-8.5:kernel-tools-0:4.18.0-348.7.1.el8_5.tuxcare.els32.x86_64", "CentOS-8.5:kernel-tools-libs-0:4.18.0-348.7.1.el8_5.tuxcare.els32.x86_64", "CentOS-8.5:kernel-tools-libs-devel-0:4.18.0-348.7.1.el8_5.tuxcare.els32.x86_64", "CentOS-8.5:perf-0:4.18.0-348.7.1.el8_5.tuxcare.els32.x86_64", "CentOS-8.5:python3-perf-0:4.18.0-348.7.1.el8_5.tuxcare.els32.x86_64" ], "known_affected": [ "CentOS-8.5:bpftool-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-core-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-cross-headers-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-debug-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-debug-core-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-debug-devel-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-debug-modules-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-debug-modules-extra-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-debug-modules-internal-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-devel-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-headers-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-ipaclones-internal-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-modules-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-modules-extra-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-modules-internal-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-selftests-internal-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-tools-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-tools-libs-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-tools-libs-devel-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:perf-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:python3-perf-4.18.0-348.7.1.el8_5.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2022-50408" } ], "release_date": "2025-09-18T00:00:00Z", "remediations": [ { "category": "none_available", "details": "Affected", "product_ids": [ "CentOS-8.5:bpftool-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-core-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-cross-headers-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-debug-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-debug-core-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-debug-devel-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-debug-modules-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-debug-modules-extra-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-debug-modules-internal-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-devel-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-headers-4.18.0-348.7.1.el8_5.x86_64", "CentOS-8.5:kernel-ipaclones-internal-4.18.0-348.7.1.el8_5.x86_64", 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"Important" } ] } ] }