{ "containers": { "cna": { "providerMetadata": { "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix illegal rmb_desc access in SMC-D connection dump\n\nA crash was found when dumping SMC-D connections. It can be reproduced\nby following steps:\n\n- run nginx/wrk test:\n smc_run nginx\n smc_run wrk -t 16 -c 1000 -d -H 'Connection: Close' \n\n- continuously dump SMC-D connections in parallel:\n watch -n 1 'smcss -D'\n\n BUG: kernel NULL pointer dereference, address: 0000000000000030\n CPU: 2 PID: 7204 Comm: smcss Kdump: loaded Tainted: G\tE 6.7.0+ #55\n RIP: 0010:__smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag]\n Call Trace:\n \n ? __die+0x24/0x70\n ? page_fault_oops+0x66/0x150\n ? exc_page_fault+0x69/0x140\n ? asm_exc_page_fault+0x26/0x30\n ? __smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag]\n ? __kmalloc_node_track_caller+0x35d/0x430\n ? __alloc_skb+0x77/0x170\n smc_diag_dump_proto+0xd0/0xf0 [smc_diag]\n smc_diag_dump+0x26/0x60 [smc_diag]\n netlink_dump+0x19f/0x320\n __netlink_dump_start+0x1dc/0x300\n smc_diag_handler_dump+0x6a/0x80 [smc_diag]\n ? __pfx_smc_diag_dump+0x10/0x10 [smc_diag]\n sock_diag_rcv_msg+0x121/0x140\n ? __pfx_sock_diag_rcv_msg+0x10/0x10\n netlink_rcv_skb+0x5a/0x110\n sock_diag_rcv+0x28/0x40\n netlink_unicast+0x22a/0x330\n netlink_sendmsg+0x1f8/0x420\n __sock_sendmsg+0xb0/0xc0\n ____sys_sendmsg+0x24e/0x300\n ? copy_msghdr_from_user+0x62/0x80\n ___sys_sendmsg+0x7c/0xd0\n ? __do_fault+0x34/0x160\n ? do_read_fault+0x5f/0x100\n ? do_fault+0xb0/0x110\n ? __handle_mm_fault+0x2b0/0x6c0\n __sys_sendmsg+0x4d/0x80\n do_syscall_64+0x69/0x180\n entry_SYSCALL_64_after_hwframe+0x6e/0x76\n\nIt is possible that the connection is in process of being established\nwhen we dump it. Assumed that the connection has been registered in a\nlink group by smc_conn_create() but the rmb_desc has not yet been\ninitialized by smc_buf_create(), thus causing the illegal access to\nconn->rmb_desc. So fix it by checking before dump." } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "net/smc/smc_diag.c" ], "versions": [ { "version": "4b1b7d3b30a6", "lessThan": "27aea6483891", "status": "affected", "versionType": "git" }, { "version": "4b1b7d3b30a6", "lessThan": "1fea9969b81c", "status": "affected", "versionType": "git" }, { "version": "4b1b7d3b30a6", "lessThan": "5fed92ca32ea", "status": "affected", "versionType": "git" }, { "version": "4b1b7d3b30a6", "lessThan": "68b888d51ac8", "status": "affected", "versionType": "git" }, { "version": "4b1b7d3b30a6", "lessThan": "6994dba06321", "status": "affected", "versionType": "git" }, { "version": "4b1b7d3b30a6", "lessThan": "a164c2922675", "status": "affected", "versionType": "git" }, { "version": "4b1b7d3b30a6", "lessThan": "8f3f9186e5bb", "status": "affected", "versionType": "git" }, { "version": "4b1b7d3b30a6", "lessThan": "dbc153fd3c14", "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/smc/smc_diag.c" ], "versions": [ { "version": "4.19", "status": "affected" }, { "version": "0", "lessThan": "4.19", "status": "unaffected", "versionType": "custom" }, { "version": "4.19.307", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.269", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.210", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.15.149", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.1.76", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.6.15", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.7.3", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "custom" }, { "version": "6.8", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/27aea64838914c6122db5b8bd4bed865c9736f22" }, { "url": "https://git.kernel.org/stable/c/1fea9969b81c67d0cb1611d1b8b7d19049d937be" }, { "url": "https://git.kernel.org/stable/c/5fed92ca32eafbfae8b6bee8ca34cca71c6a8b6d" }, { "url": "https://git.kernel.org/stable/c/68b888d51ac82f2b96bf5e077a31d76afcdef25a" }, { "url": "https://git.kernel.org/stable/c/6994dba06321e3c48fdad0ba796a063d9d82183a" }, { "url": "https://git.kernel.org/stable/c/a164c2922675d7051805cdaf2b07daffe44f20d9" }, { "url": "https://git.kernel.org/stable/c/8f3f9186e5bb96a9c9654c41653210e3ea7e48a6" }, { "url": "https://git.kernel.org/stable/c/dbc153fd3c142909e564bb256da087e13fbf239c" } ], "title": "net/smc: fix illegal rmb_desc access in SMC-D connection dump", "x_generator": { "engine": "bippy-a5840b7849dd" } } }, "cveMetadata": { "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", "cveID": "CVE-2024-26615", "requesterUserId": "gregkh@kernel.org", "serial": "1", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.0" }