{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2022-49584", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-49584", "idYear": 2022, "status": "PUBLISHED", "publishedAt": "2025-02-26T02:23:20.600Z", "updatedAt": "2026-05-11T19:02:46.366Z", "importedAt": "2026-10-24T01:56:49.724Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "ixgbe: Add locking to prevent panic when setting sriov_numvfs to zero", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nixgbe: Add locking to prevent panic when setting sriov_numvfs to zero\n\nIt is possible to disable VFs while the PF driver is processing requests\nfrom the VF driver. This can result in a panic.\n\nBUG: unable to handle kernel paging request at 000000000000106c\nPGD 0 P4D 0\nOops: 0000 [#1] SMP NOPTI\nCPU: 8 PID: 0 Comm: swapper/8 Kdump: loaded Tainted: G I --------- -\nHardware name: Dell Inc. PowerEdge R740/06WXJT, BIOS 2.8.2 08/27/2020\nRIP: 0010:ixgbe_msg_task+0x4c8/0x1690 [ixgbe]\nCode: 00 00 48 8d 04 40 48 c1 e0 05 89 7c 24 24 89 fd 48 89 44 24 10 83 ff\n01 0f 84 b8 04 00 00 4c 8b 64 24 10 4d 03 a5 48 22 00 00 <41> 80 7c 24 4c\n00 0f 84 8a 03 00 00 0f b7 c7 83 f8 08 0f 84 8f 0a\nRSP: 0018:ffffb337869f8df8 EFLAGS: 00010002\nRAX: 0000000000001020 RBX: 0000000000000000 RCX: 000000000000002b\nRDX: 0000000000000002 RSI: 0000000000000008 RDI: 0000000000000006\nRBP: 0000000000000006 R08: 0000000000000002 R09: 0000000000029780\nR10: 00006957d8f42832 R11: 0000000000000000 R12: 0000000000001020\nR13: ffff8a00e8978ac0 R14: 000000000000002b R15: ffff8a00e8979c80\nFS: 0000000000000000(0000) GS:ffff8a07dfd00000(0000) knlGS:00000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000000000000106c CR3: 0000000063e10004 CR4: 00000000007726e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nPKRU: 55555554\nCall Trace:\n \n ? ttwu_do_wakeup+0x19/0x140\n ? try_to_wake_up+0x1cd/0x550\n ? ixgbevf_update_xcast_mode+0x71/0xc0 [ixgbevf]\n ixgbe_msix_other+0x17e/0x310 [ixgbe]\n __handle_irq_event_percpu+0x40/0x180\n handle_irq_event_percpu+0x30/0x80\n handle_irq_event+0x36/0x53\n handle_edge_irq+0x82/0x190\n handle_irq+0x1c/0x30\n do_IRQ+0x49/0xd0\n common_interrupt+0xf/0xf\n\nThis can be eventually be reproduced with the following script:\n\nwhile :\ndo\n echo 63 > /sys/class/net//device/sriov_numvfs\n sleep 1\n echo 0 > /sys/class/net//device/sriov_numvfs\n sleep 1\ndone\n\nAdd lock when disabling SR-IOV to prevent process VF mailbox communication.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "d773d1310625be3b040b436178ad59a0af8888f1", "status": "affected", "versionType": "git", "lessThan": "031af9e617a6f51075d97e56fc9e712c7dde2508" }, { "version": "d773d1310625be3b040b436178ad59a0af8888f1", "status": "affected", "versionType": "git", "lessThan": "b82de63f8f817b5735480293dda8e92ba8170c52" }, { "version": "d773d1310625be3b040b436178ad59a0af8888f1", "status": "affected", "versionType": "git", "lessThan": "16f929a5e76fd047fd8697e1e568bdd7d771955c" }, { "version": "d773d1310625be3b040b436178ad59a0af8888f1", "status": "affected", "versionType": "git", "lessThan": "9d925d2dc82cec2bcbd8625457645d8a548ab22e" }, { "version": "d773d1310625be3b040b436178ad59a0af8888f1", "status": "affected", "versionType": "git", "lessThan": "1e53834ce541d4fe271cdcca7703e50be0a44f8a" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "3.6", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "3.6" }, { "version": "5.4.208", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.134", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.58", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "5.18.15", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.18.*" }, { "version": "5.19", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }