{"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]  <TASK>\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"}}}}