{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-46992","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-27T18:42:55.949Z","datePublished":"2024-02-28T08:13:17.814Z","dateUpdated":"2025-05-04T07:01:53.656Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:01:53.656Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nftables: avoid overflows in nft_hash_buckets()\n\nNumber of buckets being stored in 32bit variables, we have to\nensure that no overflows occur in nft_hash_buckets()\n\nsyzbot injected a size == 0x40000000 and reported:\n\nUBSAN: shift-out-of-bounds in ./include/linux/log2.h:57:13\nshift exponent 64 is too large for 64-bit type 'long unsigned int'\nCPU: 1 PID: 29539 Comm: syz-executor.4 Not tainted 5.12.0-rc7-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nCall Trace:\n __dump_stack lib/dump_stack.c:79 [inline]\n dump_stack+0x141/0x1d7 lib/dump_stack.c:120\n ubsan_epilogue+0xb/0x5a lib/ubsan.c:148\n __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:327\n __roundup_pow_of_two include/linux/log2.h:57 [inline]\n nft_hash_buckets net/netfilter/nft_set_hash.c:411 [inline]\n nft_hash_estimate.cold+0x19/0x1e net/netfilter/nft_set_hash.c:652\n nft_select_set_ops net/netfilter/nf_tables_api.c:3586 [inline]\n nf_tables_newset+0xe62/0x3110 net/netfilter/nf_tables_api.c:4322\n nfnetlink_rcv_batch+0xa09/0x24b0 net/netfilter/nfnetlink.c:488\n nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:612 [inline]\n nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:630\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"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nft_set_hash.c"],"versions":[{"version":"0ed6389c483dc77cdbdd48de0ca7ce41723dd667","lessThan":"2824cafc6a93792d9ad85939c499161214d84c4b","status":"affected","versionType":"git"},{"version":"0ed6389c483dc77cdbdd48de0ca7ce41723dd667","lessThan":"efcd730ddd6f25578bd31bfe703e593e2421d708","status":"affected","versionType":"git"},{"version":"0ed6389c483dc77cdbdd48de0ca7ce41723dd667","lessThan":"c77e2ef18167ad334e27610ced9a7f6af5ec1787","status":"affected","versionType":"git"},{"version":"0ed6389c483dc77cdbdd48de0ca7ce41723dd667","lessThan":"72b49dd116ca00a46a11d5a4d8d7987f05ed9cd7","status":"affected","versionType":"git"},{"version":"0ed6389c483dc77cdbdd48de0ca7ce41723dd667","lessThan":"1e8ab479cfbe5751efccedb95afb9b112a5ba475","status":"affected","versionType":"git"},{"version":"0ed6389c483dc77cdbdd48de0ca7ce41723dd667","lessThan":"a388d10961ff8578b1a6691945d406c0f33aa71b","status":"affected","versionType":"git"},{"version":"0ed6389c483dc77cdbdd48de0ca7ce41723dd667","lessThan":"a54754ec9891830ba548e2010c889e3c8146e449","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nft_set_hash.c"],"versions":[{"version":"4.9","status":"affected"},{"version":"0","lessThan":"4.9","status":"unaffected","versionType":"semver"},{"version":"4.14.233","lessThanOrEqual":"4.14.*","status":"unaffected","versionType":"semver"},{"version":"4.19.191","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.120","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.38","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.11.22","lessThanOrEqual":"5.11.*","status":"unaffected","versionType":"semver"},{"version":"5.12.5","lessThanOrEqual":"5.12.*","status":"unaffected","versionType":"semver"},{"version":"5.13","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":"4.9","versionEndExcluding":"4.14.233"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"4.19.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.4.120"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.10.38"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.11.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.12.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.13"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2824cafc6a93792d9ad85939c499161214d84c4b"},{"url":"https://git.kernel.org/stable/c/efcd730ddd6f25578bd31bfe703e593e2421d708"},{"url":"https://git.kernel.org/stable/c/c77e2ef18167ad334e27610ced9a7f6af5ec1787"},{"url":"https://git.kernel.org/stable/c/72b49dd116ca00a46a11d5a4d8d7987f05ed9cd7"},{"url":"https://git.kernel.org/stable/c/1e8ab479cfbe5751efccedb95afb9b112a5ba475"},{"url":"https://git.kernel.org/stable/c/a388d10961ff8578b1a6691945d406c0f33aa71b"},{"url":"https://git.kernel.org/stable/c/a54754ec9891830ba548e2010c889e3c8146e449"}],"title":"netfilter: nftables: avoid overflows in nft_hash_buckets()","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2021-46992","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-02-28T19:55:35.609531Z"}}}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-06-04T17:13:05.125Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T05:24:38.466Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/2824cafc6a93792d9ad85939c499161214d84c4b","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/efcd730ddd6f25578bd31bfe703e593e2421d708","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/c77e2ef18167ad334e27610ced9a7f6af5ec1787","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/72b49dd116ca00a46a11d5a4d8d7987f05ed9cd7","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/1e8ab479cfbe5751efccedb95afb9b112a5ba475","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/a388d10961ff8578b1a6691945d406c0f33aa71b","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/a54754ec9891830ba548e2010c889e3c8146e449","tags":["x_transferred"]}]}]}}