{ "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-2021-47562", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47562", "idYear": 2021, "status": "PUBLISHED", "publishedAt": "2024-05-24T15:12:50.733Z", "updatedAt": "2026-05-11T13:57:01.615Z", "importedAt": "2026-10-24T01:56:36.661Z", "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": "ice: fix vsi->txq_map sizing", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix vsi->txq_map sizing\n\nThe approach of having XDP queue per CPU regardless of user's setting\nexposed a hidden bug that could occur in case when Rx queue count differ\nfrom Tx queue count. Currently vsi->txq_map's size is equal to the\ndoubled vsi->alloc_txq, which is not correct due to the fact that XDP\nrings were previously based on the Rx queue count. Below splat can be\nseen when ethtool -L is used and XDP rings are configured:\n\n[ 682.875339] BUG: kernel NULL pointer dereference, address: 000000000000000f\n[ 682.883403] #PF: supervisor read access in kernel mode\n[ 682.889345] #PF: error_code(0x0000) - not-present page\n[ 682.895289] PGD 0 P4D 0\n[ 682.898218] Oops: 0000 [#1] PREEMPT SMP PTI\n[ 682.903055] CPU: 42 PID: 2878 Comm: ethtool Tainted: G OE 5.15.0-rc5+ #1\n[ 682.912214] Hardware name: Intel Corp. GRANTLEY/GRANTLEY, BIOS GRRFCRB1.86B.0276.D07.1605190235 05/19/2016\n[ 682.923380] RIP: 0010:devres_remove+0x44/0x130\n[ 682.928527] Code: 49 89 f4 55 48 89 fd 4c 89 ff 53 48 83 ec 10 e8 92 b9 49 00 48 8b 9d a8 02 00 00 48 8d 8d a0 02 00 00 49 89 c2 48 39 cb 74 0f <4c> 3b 63 10 74 25 48 8b 5b 08 48 39 cb 75 f1 4c 89 ff 4c 89 d6 e8\n[ 682.950237] RSP: 0018:ffffc90006a679f0 EFLAGS: 00010002\n[ 682.956285] RAX: 0000000000000286 RBX: ffffffffffffffff RCX: ffff88908343a370\n[ 682.964538] RDX: 0000000000000001 RSI: ffffffff81690d60 RDI: 0000000000000000\n[ 682.972789] RBP: ffff88908343a0d0 R08: 0000000000000000 R09: 0000000000000000\n[ 682.981040] R10: 0000000000000286 R11: 3fffffffffffffff R12: ffffffff81690d60\n[ 682.989282] R13: ffffffff81690a00 R14: ffff8890819807a8 R15: ffff88908343a36c\n[ 682.997535] FS: 00007f08c7bfa740(0000) GS:ffff88a03fd00000(0000) knlGS:0000000000000000\n[ 683.006910] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 683.013557] CR2: 000000000000000f CR3: 0000001080a66003 CR4: 00000000003706e0\n[ 683.021819] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 683.030075] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 683.038336] Call Trace:\n[ 683.041167] devm_kfree+0x33/0x50\n[ 683.045004] ice_vsi_free_arrays+0x5e/0xc0 [ice]\n[ 683.050380] ice_vsi_rebuild+0x4c8/0x750 [ice]\n[ 683.055543] ice_vsi_recfg_qs+0x9a/0x110 [ice]\n[ 683.060697] ice_set_channels+0x14f/0x290 [ice]\n[ 683.065962] ethnl_set_channels+0x333/0x3f0\n[ 683.070807] genl_family_rcv_msg_doit+0xea/0x150\n[ 683.076152] genl_rcv_msg+0xde/0x1d0\n[ 683.080289] ? channels_prepare_data+0x60/0x60\n[ 683.085432] ? genl_get_cmd+0xd0/0xd0\n[ 683.089667] netlink_rcv_skb+0x50/0xf0\n[ 683.094006] genl_rcv+0x24/0x40\n[ 683.097638] netlink_unicast+0x239/0x340\n[ 683.102177] netlink_sendmsg+0x22e/0x470\n[ 683.106717] sock_sendmsg+0x5e/0x60\n[ 683.110756] __sys_sendto+0xee/0x150\n[ 683.114894] ? handle_mm_fault+0xd0/0x2a0\n[ 683.119535] ? do_user_addr_fault+0x1f3/0x690\n[ 683.134173] __x64_sys_sendto+0x25/0x30\n[ 683.148231] do_syscall_64+0x3b/0xc0\n[ 683.161992] entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nFix this by taking into account the value that num_possible_cpus()\nyields in addition to vsi->alloc_txq instead of doubling the latter.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "efc2214b6047b6f5b4ca53151eba62521b9452d6", "status": "affected", "versionType": "git", "lessThan": "1eb5395add786613c7c5579d3947aa0b8f0ec241" }, { "version": "efc2214b6047b6f5b4ca53151eba62521b9452d6", "status": "affected", "versionType": "git", "lessThan": "992ba40a67638dfe2772b84dfc8168dc328d5c4c" }, { "version": "efc2214b6047b6f5b4ca53151eba62521b9452d6", "status": "affected", "versionType": "git", "lessThan": "792b2086584f25d84081a526beee80d103c2a913" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "5.5", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "5.5" }, { "version": "5.10.83", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.6", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "5.16", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }