{ "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-2021-46915", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-46915", "idYear": 2021, "status": "PUBLISHED", "publishedAt": "2024-02-27T06:53:54.148Z", "updatedAt": "2026-05-11T13:44:21.141Z", "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": "netfilter: nft_limit: avoid possible divide error in nft_limit_init", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_limit: avoid possible divide error in nft_limit_init\n\ndiv_u64() divides u64 by u32.\n\nnft_limit_init() wants to divide u64 by u64, use the appropriate\nmath function (div64_u64)\n\ndivide error: 0000 [#1] PREEMPT SMP KASAN\nCPU: 1 PID: 8390 Comm: syz-executor188 Not tainted 5.12.0-rc4-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nRIP: 0010:div_u64_rem include/linux/math64.h:28 [inline]\nRIP: 0010:div_u64 include/linux/math64.h:127 [inline]\nRIP: 0010:nft_limit_init+0x2a2/0x5e0 net/netfilter/nft_limit.c:85\nCode: ef 4c 01 eb 41 0f 92 c7 48 89 de e8 38 a5 22 fa 4d 85 ff 0f 85 97 02 00 00 e8 ea 9e 22 fa 4c 0f af f3 45 89 ed 31 d2 4c 89 f0 <49> f7 f5 49 89 c6 e8 d3 9e 22 fa 48 8d 7d 48 48 b8 00 00 00 00 00\nRSP: 0018:ffffc90009447198 EFLAGS: 00010246\nRAX: 0000000000000000 RBX: 0000200000000000 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: ffffffff875152e6 RDI: 0000000000000003\nRBP: ffff888020f80908 R08: 0000200000000000 R09: 0000000000000000\nR10: ffffffff875152d8 R11: 0000000000000000 R12: ffffc90009447270\nR13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000\nFS: 000000000097a300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00000000200001c4 CR3: 0000000026a52000 CR4: 00000000001506e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n nf_tables_newexpr net/netfilter/nf_tables_api.c:2675 [inline]\n nft_expr_init+0x145/0x2d0 net/netfilter/nf_tables_api.c:2713\n nft_set_elem_expr_alloc+0x27/0x280 net/netfilter/nf_tables_api.c:5160\n nf_tables_newset+0x1997/0x3150 net/netfilter/nf_tables_api.c:4321\n nfnetlink_rcv_batch+0x85a/0x21b0 net/netfilter/nfnetlink.c:456\n nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:580 [inline]\n nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:598\n netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]\n netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338\n netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927\n sock_sendmsg_nosec net/socket.c:654 [inline]\n sock_sendmsg+0xcf/0x120 net/socket.c:674\n ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350\n ___sys_sendmsg+0xf3/0x170 net/socket.c:2404\n __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433\n do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46\n entry_SYSCALL_64_after_hwframe+0x44/0xae", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "c26844eda9d4fdbd266660e3b3de2d0270e3a1ed", "status": "affected", "versionType": "git", "lessThan": "9065ccb9ec92c5120e7e97958397ebdb454f23d6" }, { "version": "c26844eda9d4fdbd266660e3b3de2d0270e3a1ed", "status": "affected", "versionType": "git", "lessThan": "fadd3c4afdf3d4c21f4d138502f8b76334987e26" }, { "version": "c26844eda9d4fdbd266660e3b3de2d0270e3a1ed", "status": "affected", "versionType": "git", "lessThan": "01fb1626b620cb37a65ad08e0f626489e8f042ef" }, { "version": "c26844eda9d4fdbd266660e3b3de2d0270e3a1ed", "status": "affected", "versionType": "git", "lessThan": "dc1732baa9da5b68621586bf8636ebbc27dc62d2" }, { "version": "c26844eda9d4fdbd266660e3b3de2d0270e3a1ed", "status": "affected", "versionType": "git", "lessThan": "1bb3ee4259936cc3b2d80a4a480bbb4868575071" }, { "version": "c26844eda9d4fdbd266660e3b3de2d0270e3a1ed", "status": "affected", "versionType": "git", "lessThan": "b895bdf5d643b6feb7c60856326dd4feb6981560" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "4.13", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "4.13" }, { "version": "4.14.232", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.14.*" }, { "version": "4.19.189", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.114", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.32", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.11.16", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.11.*" }, { "version": "5.12", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }