Vulnerability Database

309,540

Total vulnerabilities in the database

CVE-2023-53110

In the Linux kernel, the following vulnerability has been resolved:

net/smc: fix NULL sndbuf_desc in smc_cdc_tx_handler()

When performing a stress test on SMC-R by rmmod mlx5_ib driver during the wrk/nginx test, we found that there is a probability of triggering a panic while terminating all link groups.

This issue dues to the race between smc_smcr_terminate_all() and smc_buf_create().

smc_smcr_terminate_all

smc_buf_create /* init */ conn->sndbuf_desc = NULL; ...

__smc_lgr_terminate smc_conn_kill smc_close_abort smc_cdc_get_slot_and_msg_send __softirqentry_text_start smc_wr_tx_process_cqe smc_cdc_tx_handler READ(conn->sndbuf_desc->len); /* panic dues to NULL sndbuf_desc */

conn->sndbuf_desc = xxx;

This patch tries to fix the issue by always to check the sndbuf_desc before send any cdc msg, to make sure that no null pointer is seen during cqe processing.

  • Published: May 2, 2025
  • Updated: Nov 11, 2025
  • CVE: CVE-2023-53110
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.5
  • AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWEs:

Software From Fixed in
linux / linux_kernel 5.5 5.10.176
linux / linux_kernel 5.11 5.15.104
linux / linux_kernel 5.16 6.1.21
linux / linux_kernel 6.2 6.2.8
linux / linux_kernel 6.3-rc1 6.3-rc1.x
linux / linux_kernel 6.3-rc2 6.3-rc2.x