{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49695", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:21:30.442Z", "datePublished": "2025-02-26T02:24:17.545Z", "dateUpdated": "2026-08-05T08:56:02.567Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:56:02.567Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nigb: fix a use-after-free issue in igb_clean_tx_ring\n\nFix the following use-after-free bug in igb_clean_tx_ring routine when\nthe NIC is running in XDP mode. The issue can be triggered redirecting\ntraffic into the igb NIC and then closing the device while the traffic\nis flowing.\n\n[ 73.322719] CPU: 1 PID: 487 Comm: xdp_redirect Not tainted 5.18.3-apu2 #9\n[ 73.330639] Hardware name: PC Engines APU2/APU2, BIOS 4.0.7 02/28/2017\n[ 73.337434] RIP: 0010:refcount_warn_saturate+0xa7/0xf0\n[ 73.362283] RSP: 0018:ffffc9000081f798 EFLAGS: 00010282\n[ 73.367761] RAX: 0000000000000000 RBX: ffffc90000420f80 RCX: 0000000000000000\n[ 73.375200] RDX: ffff88811ad22d00 RSI: ffff88811ad171e0 RDI: ffff88811ad171e0\n[ 73.382590] RBP: 0000000000000900 R08: ffffffff82298f28 R09: 0000000000000058\n[ 73.390008] R10: 0000000000000219 R11: ffffffff82280f40 R12: 0000000000000090\n[ 73.397356] R13: ffff888102343a40 R14: ffff88810359e0e4 R15: 0000000000000000\n[ 73.404806] FS: 00007ff38d31d740(0000) GS:ffff88811ad00000(0000) knlGS:0000000000000000\n[ 73.413129] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 73.419096] CR2: 000055cff35f13f8 CR3: 0000000106391000 CR4: 00000000000406e0\n[ 73.426565] Call Trace:\n[ 73.429087] \n[ 73.431314] igb_clean_tx_ring+0x43/0x140 [igb]\n[ 73.436002] igb_down+0x1d7/0x220 [igb]\n[ 73.439974] __igb_close+0x3c/0x120 [igb]\n[ 73.444118] igb_xdp+0x10c/0x150 [igb]\n[ 73.447983] ? igb_pci_sriov_configure+0x70/0x70 [igb]\n[ 73.453362] dev_xdp_install+0xda/0x110\n[ 73.457371] dev_xdp_attach+0x1da/0x550\n[ 73.461369] do_setlink+0xfd0/0x10f0\n[ 73.465166] ? __nla_validate_parse+0x89/0xc70\n[ 73.469714] rtnl_setlink+0x11a/0x1e0\n[ 73.473547] rtnetlink_rcv_msg+0x145/0x3d0\n[ 73.477709] ? rtnl_calcit.isra.0+0x130/0x130\n[ 73.482258] netlink_rcv_skb+0x8d/0x110\n[ 73.486229] netlink_unicast+0x230/0x340\n[ 73.490317] netlink_sendmsg+0x215/0x470\n[ 73.494395] __sys_sendto+0x179/0x190\n[ 73.498268] ? move_addr_to_user+0x37/0x70\n[ 73.502547] ? __sys_getsockname+0x84/0xe0\n[ 73.506853] ? netlink_setsockopt+0x1c1/0x4a0\n[ 73.511349] ? __sys_setsockopt+0xc8/0x1d0\n[ 73.515636] __x64_sys_sendto+0x20/0x30\n[ 73.519603] do_syscall_64+0x3b/0x80\n[ 73.523399] entry_SYSCALL_64_after_hwframe+0x44/0xae\n[ 73.528712] RIP: 0033:0x7ff38d41f20c\n[ 73.551866] RSP: 002b:00007fff3b945a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c\n[ 73.559640] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff38d41f20c\n[ 73.567066] RDX: 0000000000000034 RSI: 00007fff3b945b30 RDI: 0000000000000003\n[ 73.574457] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000\n[ 73.581852] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff3b945ab0\n[ 73.589179] R13: 0000000000000000 R14: 0000000000000003 R15: 00007fff3b945b30\n[ 73.596545] \n[ 73.598842] ---[ end trace 0000000000000000 ]---" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The UAF is triggered via local rtnetlink (RTM_SETLINK/XDP attach-detach or interface down) calling igb_clean_tx_ring, not by processing remote packets; the packet TX completion path already handled XDP frames correctly.\nAC:L - An attacker who can configure XDP redirect into the igb device and then close or reconfigure it controls both preconditions and can reliably hit the deterministic type-confused free of pending xdp_frame objects.\nPR:L - Triggering requires CAP_NET_ADMIN to attach/detach XDP or bring the igb interface down via rtnetlink; per kernel CNA guidance this is Low, not full root-only High, matching similar XDP configuration UAF scores.\nUI:N - Exploitation is performed entirely by the attacker’s own netlink/XDP operations; no separate victim user action is required.\nS:U - This is a standard in-kernel use-after-free in the igb driver leading to privilege escalation within the same kernel security authority, with no VM/IOMMU boundary crossing.\nC:H - Use-after-free via freeing an xdp_frame as an sk_buff enables heap corruption and attacker control over freed object contents, which can be leveraged for arbitrary kernel memory disclosure.\nI:H - The type-confused free/UAF provides a memory corruption primitive suitable for heap spraying and control-flow hijacking, enabling arbitrary kernel writes or code execution.\nA:H - The bug produces kernel warnings/oopses (refcount_warn_saturate in the report) and use-after-free crashes when the device is closed with XDP frames on the TX ring." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/intel/igb/igb_main.c" ], "versions": [ { "version": "9cbc948b5a20c9c054d9631099c0426c16da546b", "lessThan": "c12a2c9b1b460ed72e6b3c33aac1ef51b0329b66", "status": "affected", "versionType": "git" }, { "version": "9cbc948b5a20c9c054d9631099c0426c16da546b", "lessThan": "2af944210dc23d43d8208dafac4df7be7e3c168b", "status": "affected", "versionType": "git" }, { "version": "9cbc948b5a20c9c054d9631099c0426c16da546b", "lessThan": "68a0ed06dcd5d3ea732d011c0b83d66e4791f521", "status": "affected", "versionType": "git" }, { "version": "9cbc948b5a20c9c054d9631099c0426c16da546b", "lessThan": "3f6a57ee8544ec3982f8a3cbcbf4aea7d47eb9ec", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/net/ethernet/intel/igb/igb_main.c" ], "versions": [ { "version": "5.10", "status": "affected" }, { "version": "0", "lessThan": "5.10", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.127", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.51", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18.8", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.10.127" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.15.51" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.18.8" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.10", "versionEndExcluding": "5.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/c12a2c9b1b460ed72e6b3c33aac1ef51b0329b66" }, { "url": "https://git.kernel.org/stable/c/2af944210dc23d43d8208dafac4df7be7e3c168b" }, { "url": "https://git.kernel.org/stable/c/68a0ed06dcd5d3ea732d011c0b83d66e4791f521" }, { "url": "https://git.kernel.org/stable/c/3f6a57ee8544ec3982f8a3cbcbf4aea7d47eb9ec" } ], "title": "igb: fix a use-after-free issue in igb_clean_tx_ring", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2022-49695", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2025-02-27T18:15:05.537306Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-02-27T18:22:30.994Z" } } ] } }