{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-74317", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.884Z", "datePublished": "2026-08-15T05:58:14.832Z", "dateUpdated": "2026-08-17T05:45:51.293Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:45:51.293Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nixgbe: do not configure xps for XDP queues\n\nnetif_set_xps_queue() should not be called for an XDP Tx queue, since such\nqueues are not netdev-exposed. On systems with number of CPUs >=64, on E610\nadapter, netdev is configured with maximum number queue pairs being 63\n(due to MSI-X assignment), but configuring XDP results in 64 XDP queues.\n\nSo, during XDP program load, when netif_set_xps_queue() is called for the\nlast XDP queue, we get a WARNING with a call trace and KASAN report\nafterwards (if enabled).\n\n[ 2012.699800] WARNING: net/core/dev.c:2854 at __netif_set_xps_queue+0x116a/0x1e40, CPU#36: xdpsock/103668\n[...]\n[ 2012.700029] RIP: 0010:__netif_set_xps_queue+0x116a/0x1e40\n[ 2012.700035] Code: b6 34 06 48 89 f8 83 e0 07 83 c0 01 40 38 f0 7c 09 40 84 f6 0f 85 03 0a 00 00 0f b7 44 24 40 66 43 89 44 6a 18 e9 01 fb ff ff <0f> 0b e9 f2 ee ff ff 44 8b 44 24 44 45 85 c0 74 50 4d 85 e4 0f 84\n[ 2012.700040] RSP: 0018:ffff8882369aeb28 EFLAGS: 00010246\n[ 2012.700046] RAX: 0000000000000000 RBX: 000000000000003f RCX: 0000000000000000\n[ 2012.700050] RDX: 1ffff1111da3d891 RSI: ffff888120e34250 RDI: ffff8888ed1ec488\n[ 2012.700054] RBP: ffff888913281560 R08: 0000000000000000 R09: ffff8888ed1ec000\n[ 2012.700058] R10: ffff8888a2e83180 R11: 0000000000000000 R12: 0000000000007fa8\n[ 2012.700061] R13: 000000000000003f R14: ffff888120e34854 R15: ffff8889132817c8\n[ 2012.700065] FS: 00007fc8ea9ff740(0000) GS:ffff88884cefe000(0000) knlGS:0000000000000000\n[ 2012.700069] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 2012.700073] CR2: 00007f81c8000020 CR3: 00000002299f8006 CR4: 00000000007726f0\n[ 2012.700077] PKRU: 55555554\n[ 2012.700080] Call Trace:\n[ 2012.700084] \n[ 2012.700087] ? ktime_get+0x61/0x150\n[ 2012.700097] ? usleep_range_state+0x133/0x1b0\n[ 2012.700108] ? __pfx_usleep_range_state+0x10/0x10\n[ 2012.700114] netif_set_xps_queue+0x31/0x50\n[ 2012.700119] ixgbe_configure_tx_ring+0x472/0x920 [ixgbe]\n[...]\n[ 2012.700486] ixgbe_xdp+0x38f/0x750 [ixgbe]\n\n[...]\n\n[ 2012.701094] BUG: KASAN: slab-out-of-bounds in __netif_set_xps_queue+0x1ac5/0x1e40\n[ 2012.701100] Write of size 4 at addr ffff88888d43cff8 by task xdpsock/103668\n\nSkip XPS configuration for XDP Tx queues." } ], "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 bug is reached only via local kernel interfaces (bpf syscall/RTNETLINK IFLA_XDP_FD or AF_XDP setup) that attach an XDP program to an ixgbe netdev, calling ixgbe_xdp_setup() -> ixgbe_configure_tx_ring() -> netif_set_xps_queue(); it is not triggered by remote network packets.\nAC:L - On ixgbe with 64+ CPUs, loading any XDP program deterministically configures all XDP Tx rings including queue_index 63 while netdev->num_tx_queues stays 63, reliably triggering the out-of-bounds write in __netif_set_xps_queue() without races or attacker-uncontrollable timing.\nPR:L - Reaching ixgbe_xdp()/ndo_bpf requires CAP_NET_ADMIN to load/attach BPF_PROG_TYPE_XDP via bpf() or rtnl_setlink; per kernel CNA guidance CAP_NET_ADMIN is scored as Low because it is obtainable by unprivileged users inside a user/network namespace (unshare -Urn).\nUI:N - Exploitation requires only the attacker to load an XDP program on the ixgbe interface; no victim user action such as opening files, clicking links, or mounting filesystems is needed.\nS:U - The out-of-bounds write corrupts kernel netdev/XPS metadata in the same kernel security domain as the attacker; it does not cross VM, container, or IOMMU boundaries to impact a separate authority.\nC:H - KASAN reports a slab out-of-bounds 4-byte write in __netif_set_xps_queue() via netdev_get_tx_queue(dev, index) when index equals num_tx_queues; kernel heap corruption can be leveraged for further memory disclosure even though the immediate fault is a write.\nI:H - The vulnerability is an out-of-bounds write past the netdev->_tx[] array (writing netdev_queue->numa_node), constituting kernel memory corruption that can potentially be developed into arbitrary write or control-flow hijack primitives.\nA:H - Triggering the bug emits a kernel WARNING and KASAN slab-out-of-bounds report during XDP program load; the corrupting write can panic/oops the system or destabilize the ixgbe driver on production kernels without KASAN." } ] } ], "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/ixgbe/ixgbe_main.c" ], "versions": [ { "version": "33fdc82f08835de4c39a00657742f5b11db00d32", "lessThan": "a2a224f5e344ccb1ec3693a0735822db9214e2ca", "status": "affected", "versionType": "git" }, { "version": "33fdc82f08835de4c39a00657742f5b11db00d32", "lessThan": "7bd4355272de34c2e90e34b72c5613736d03c32b", "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/ixgbe/ixgbe_main.c" ], "versions": [ { "version": "4.12", "status": "affected" }, { "version": "0", "lessThan": "4.12", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "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": "4.12", "versionEndExcluding": "7.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/a2a224f5e344ccb1ec3693a0735822db9214e2ca" }, { "url": "https://git.kernel.org/stable/c/7bd4355272de34c2e90e34b72c5613736d03c32b" } ], "title": "ixgbe: do not configure xps for XDP queues", "x_generator": { "engine": "bippy-1.2.0" } } } }