cbcvebase.
CVE-2023-53853
published 2025-12-09

CVE-2023-53853: In the Linux kernel, the following vulnerability has been resolved: netlink: annotate accesses to nlk->cb_running Both netlink_recvmsg() and…

PriorityP422medium4.7
EPSS
0.21%
11.8th percentile
In the Linux kernel, the following vulnerability has been resolved: netlink: annotate accesses to nlk->cb_running Both netlink_recvmsg() and netlink_native_seq_show() read nlk->cb_running locklessly. Use READ_ONCE() there. Add corresponding WRITE_ONCE() to netlink_dump() and __netlink_dump_start() syzbot reported: BUG: KCSAN: data-race in __netlink_dump_start / netlink_recvmsg write to 0xffff88813ea4db59 of 1 bytes by task 28219 on cpu 0: __netlink_dump_start+0x3af/0x4d0 net/netlink/af_netlink.c:2399 netlink_dump_start include/linux/netlink.h:308 [inline] rtnetlink_rcv_msg+0x70f/0x8c0 net/core/rtnetlink.c:6130 netlink_rcv_skb+0x126/0x220 net/netlink/af_netlink.c:2577 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:6192 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline] netlink_unicast+0x56f/0x640 net/netlink/af_netlink.c:1365 netlink_sendmsg+0x665/0x770 net/netlink/af_netlink.c:1942 sock_sendmsg_nosec net/socket.c:724 [inline] sock_sendmsg net/socket.c:747 [inline] sock_write_iter+0x1aa/0x230 net/socket.c:1138 call_write_iter include/linux/fs.h:1851 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x463/0x760 fs/read_write.c:584 ksys_write+0xeb/0x1a0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x42/0x50 fs/read_write.c:646 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff88813ea4db59 of 1 bytes by task 28222 on cpu 1: netlink_recvmsg+0x3b4/0x730 net/netlink/af_netlink.c:2022 sock_recvmsg_nosec+0x4c/0x80 net/socket.c:1017 ____sys_recvmsg+0x2db/0x310 net/socket.c:2718 ___sys_recvmsg net/socket.c:2762 [inline] do_recvmmsg+0x2e5/0x710 net/socket.c:2856 __sys_recvmmsg net/socket.c:2935 [inline] __do_sys_recvmmsg net/socket.c:2958 [inline] __se_sys_recvmmsg net/socket.c:2951 [inline] __x64_sys_recvmmsg+0xe2/0x160 net/socket.c:2951 do_syscall_x64 arch/x86/entry

Affected

21 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.37-1 (bookworm)linux 6.1.37-1 (bookworm)
linuxlinux——
linuxlinux>= 16b304f3404f8e0243d5ee2b70b68767b7b59b2b < e25e9d8a210ed78bdf0f364576dbee13aefadbf8e25e9d8a210ed78bdf0f364576dbee13aefadbf8
linuxlinux>= 16b304f3404f8e0243d5ee2b70b68767b7b59b2b < 840a647499b093621167de56ffa8756dfc69f242840a647499b093621167de56ffa8756dfc69f242
linuxlinux>= 16b304f3404f8e0243d5ee2b70b68767b7b59b2b < a507022c862e10744a92c4bf5709775450a110ada507022c862e10744a92c4bf5709775450a110ad
linuxlinux>= 16b304f3404f8e0243d5ee2b70b68767b7b59b2b < f92557f79a60cb142258f5fa7194f327573fadd8f92557f79a60cb142258f5fa7194f327573fadd8
linuxlinux>= 16b304f3404f8e0243d5ee2b70b68767b7b59b2b < 1d5c8b01f1df0461256a6d75854ed806f50645a31d5c8b01f1df0461256a6d75854ed806f50645a3
linuxlinux>= 16b304f3404f8e0243d5ee2b70b68767b7b59b2b < a115dadf8995b1730c36c474401d97355705cb88a115dadf8995b1730c36c474401d97355705cb88
linuxlinux>= 16b304f3404f8e0243d5ee2b70b68767b7b59b2b < 02e7afd659a4c9ce1e98fc01ab4c510f3de1f0b302e7afd659a4c9ce1e98fc01ab4c510f3de1f0b3
linuxlinux>= 16b304f3404f8e0243d5ee2b70b68767b7b59b2b < a939d14919b799e6fff8a9c80296ca229ba2f8a4a939d14919b799e6fff8a9c80296ca229ba2f8a4
linuxlinux_kernel>= 0 < 5.10.191-15.10.191-1
linuxlinux_kernel>= 0 < 6.1.37-16.1.37-1
linuxlinux_kernel>= 0 < 6.3.7-16.3.7-1
linuxlinux_kernel>= 0 < 6.3.7-16.3.7-1
linuxlinux_kernel>= 3.12.0 < 4.14.3164.14.316
linuxlinux_kernel>= 4.15.0 < 4.19.2844.19.284
linuxlinux_kernel>= 4.20.0 < 5.4.2445.4.244
linuxlinux_kernel>= 5.11.0 < 5.15.1135.15.113
linuxlinux_kernel>= 5.16.0 < 6.1.306.1.30
linuxlinux_kernel>= 5.5.0 < 5.10.1815.10.181
linuxlinux_kernel>= 6.2.0 < 6.3.46.3.4
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