{"id":"CVE-2023-53853","summary":"netlink: annotate accesses to nlk-\u003ecb_running","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetlink: annotate accesses to nlk-\u003ecb_running\n\nBoth netlink_recvmsg() and netlink_native_seq_show() read\nnlk-\u003ecb_running locklessly. Use READ_ONCE() there.\n\nAdd corresponding WRITE_ONCE() to netlink_dump() and\n__netlink_dump_start()\n\nsyzbot reported:\nBUG: KCSAN: data-race in __netlink_dump_start / netlink_recvmsg\n\nwrite to 0xffff88813ea4db59 of 1 bytes by task 28219 on cpu 0:\n__netlink_dump_start+0x3af/0x4d0 net/netlink/af_netlink.c:2399\nnetlink_dump_start include/linux/netlink.h:308 [inline]\nrtnetlink_rcv_msg+0x70f/0x8c0 net/core/rtnetlink.c:6130\nnetlink_rcv_skb+0x126/0x220 net/netlink/af_netlink.c:2577\nrtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:6192\nnetlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]\nnetlink_unicast+0x56f/0x640 net/netlink/af_netlink.c:1365\nnetlink_sendmsg+0x665/0x770 net/netlink/af_netlink.c:1942\nsock_sendmsg_nosec net/socket.c:724 [inline]\nsock_sendmsg net/socket.c:747 [inline]\nsock_write_iter+0x1aa/0x230 net/socket.c:1138\ncall_write_iter include/linux/fs.h:1851 [inline]\nnew_sync_write fs/read_write.c:491 [inline]\nvfs_write+0x463/0x760 fs/read_write.c:584\nksys_write+0xeb/0x1a0 fs/read_write.c:637\n__do_sys_write fs/read_write.c:649 [inline]\n__se_sys_write fs/read_write.c:646 [inline]\n__x64_sys_write+0x42/0x50 fs/read_write.c:646\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nread to 0xffff88813ea4db59 of 1 bytes by task 28222 on cpu 1:\nnetlink_recvmsg+0x3b4/0x730 net/netlink/af_netlink.c:2022\nsock_recvmsg_nosec+0x4c/0x80 net/socket.c:1017\n____sys_recvmsg+0x2db/0x310 net/socket.c:2718\n___sys_recvmsg net/socket.c:2762 [inline]\ndo_recvmmsg+0x2e5/0x710 net/socket.c:2856\n__sys_recvmmsg net/socket.c:2935 [inline]\n__do_sys_recvmmsg net/socket.c:2958 [inline]\n__se_sys_recvmmsg net/socket.c:2951 [inline]\n__x64_sys_recvmmsg+0xe2/0x160 net/socket.c:2951\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nvalue changed: 0x00 -\u003e 0x01","modified":"2026-04-02T09:45:25.605737Z","published":"2025-12-09T01:30:18.628Z","related":["SUSE-SU-2026:0473-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53853.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/02e7afd659a4c9ce1e98fc01ab4c510f3de1f0b3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1d5c8b01f1df0461256a6d75854ed806f50645a3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/840a647499b093621167de56ffa8756dfc69f242"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a115dadf8995b1730c36c474401d97355705cb88"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a507022c862e10744a92c4bf5709775450a110ad"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a939d14919b799e6fff8a9c80296ca229ba2f8a4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e25e9d8a210ed78bdf0f364576dbee13aefadbf8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f92557f79a60cb142258f5fa7194f327573fadd8"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53853.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-53853"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"16b304f3404f8e0243d5ee2b70b68767b7b59b2b"},{"fixed":"e25e9d8a210ed78bdf0f364576dbee13aefadbf8"},{"fixed":"840a647499b093621167de56ffa8756dfc69f242"},{"fixed":"a507022c862e10744a92c4bf5709775450a110ad"},{"fixed":"f92557f79a60cb142258f5fa7194f327573fadd8"},{"fixed":"1d5c8b01f1df0461256a6d75854ed806f50645a3"},{"fixed":"a115dadf8995b1730c36c474401d97355705cb88"},{"fixed":"02e7afd659a4c9ce1e98fc01ab4c510f3de1f0b3"},{"fixed":"a939d14919b799e6fff8a9c80296ca229ba2f8a4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53853.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.12.0"},{"fixed":"4.14.316"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"4.19.284"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.244"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.181"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.113"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.30"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.3.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53853.json"}}],"schema_version":"1.7.5"}