CVE - CVE-2023-53121

CVE-ID
CVE-2023-53121	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
In the Linux kernel, the following vulnerability has been resolved: tcp: tcp_make_synack() can be called from process context tcp_rtx_synack() now could be called in process context as explained in 0a375c822497 ("tcp: tcp_rtx_synack() can be called from process context"). tcp_rtx_synack() might call tcp_make_synack(), which will touch per-CPU variables with preemption enabled. This causes the following BUG: BUG: using __this_cpu_add() in preemptible [00000000] code: ThriftIO1/5464 caller is tcp_make_synack+0x841/0xac0 Call Trace: <TASK> dump_stack_lvl+0x10d/0x1a0 check_preemption_disabled+0x104/0x110 tcp_make_synack+0x841/0xac0 tcp_v6_send_synack+0x5c/0x450 tcp_rtx_synack+0xeb/0x1f0 inet_rtx_syn_ack+0x34/0x60 tcp_check_req+0x3af/0x9e0 tcp_rcv_state_process+0x59b/0x2030 tcp_v6_do_rcv+0x5f5/0x700 release_sock+0x3a/0xf0 tcp_sendmsg+0x33/0x40 ____sys_sendmsg+0x2f2/0x490 __sys_sendmsg+0x184/0x230 do_syscall_64+0x3d/0x90 Avoid calling __TCP_INC_STATS() with will touch per-cpu variables. Use TCP_INC_STATS() which is safe to be called from context switch.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/442aa78ed70188b21ccd8669738448702c0a3281 URL:https://git.kernel.org/stable/c/442aa78ed70188b21ccd8669738448702c0a3281 MISC:https://git.kernel.org/stable/c/7613cde8c0c1f02a7ec2e1d536c01b65b135fc1c URL:https://git.kernel.org/stable/c/7613cde8c0c1f02a7ec2e1d536c01b65b135fc1c MISC:https://git.kernel.org/stable/c/77ad58bca0119e8cc3e0e9d91a3f22caa66e4dfa URL:https://git.kernel.org/stable/c/77ad58bca0119e8cc3e0e9d91a3f22caa66e4dfa MISC:https://git.kernel.org/stable/c/9180aa4622a720b433e842b4d3aa34d73eec577a URL:https://git.kernel.org/stable/c/9180aa4622a720b433e842b4d3aa34d73eec577a MISC:https://git.kernel.org/stable/c/ad07290d63ff6689f50565b02f5b6f34ec15a5ca URL:https://git.kernel.org/stable/c/ad07290d63ff6689f50565b02f5b6f34ec15a5ca MISC:https://git.kernel.org/stable/c/bced3f7db95ff2e6ca29dc4d1c9751ab5e736a09 URL:https://git.kernel.org/stable/c/bced3f7db95ff2e6ca29dc4d1c9751ab5e736a09 MISC:https://git.kernel.org/stable/c/d493d4fe88195a144d6a277a90062a7534ed2192 URL:https://git.kernel.org/stable/c/d493d4fe88195a144d6a277a90062a7534ed2192 MISC:https://git.kernel.org/stable/c/e23ca307745be3df7fe9762f3e2a7e311a57852e URL:https://git.kernel.org/stable/c/e23ca307745be3df7fe9762f3e2a7e311a57852e
Assigning CNA
kernel.org
Date Record Created
20250502	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250502)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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