What is CVE-2023-54237?

CVE-2023-54237 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 5.8 onward and patched in 6.1.16, 6.2.3 and 6.3. CVE-2023-54237 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-54237?

CVE-2023-54237 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2023-54237?

Yes, CVE-2023-54237 has been patched. Fixed versions include 6.1.16, 6.2.3 and 6.3. If you are running Linux kernel 5.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-54237 actively exploited?

CVE-2023-54237 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-54237

In the Linux kernel, the following vulnerability has been resolved: net/smc: fix potential panic dues to unprotected smc_llc_srv_add_link() There is a certain chance to trigger the following panic: PID: 5900 TASK: ffff88c1c8af4100 CPU: 1 COMMAND: "kworker/1:48" #0 [ffff9456c1cc79a0] machine_kexec at ffffffff870665b7 #1 [ffff9456c1cc79f0] __crash_kexec at ffffffff871b4c7a #2 [ffff9456c1cc7ab0] crash_kexec at ffffffff871b5b60 #3 [ffff9456c1cc7ac0] oops_end at ffffffff87026ce7 #4 [ffff9456c1cc7ae0] page_fault_oops at ffffffff87075715 #5 [ffff9456c1cc7b58] exc_page_fault at ffffffff87ad0654 #6 [ffff9456c1cc7b80] asm_exc_page_fault at ffffffff87c00b62 [exception RIP: ib_alloc_mr+19] RIP: ffffffffc0c9cce3 RSP: ffff9456c1cc7c38 RFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000004 RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88c1ea281d00 R8: 000000020a34ffff R9: ffff88c1350bbb20 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000010 R14: ffff88c1ab040a50 R15: ffff88c1ea281d00 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #7 [ffff9456c1cc7c60] smc_ib_get_memory_region at ffffffffc0aff6df [smc] #8 [ffff9456c1cc7c88] smcr_buf_map_link at ffffffffc0b0278c [smc] #9 [ffff9456c1cc7ce0] __smc_buf_create at ffffffffc0b03586 [smc] The reason here is that when the server tries to create a second link, smc_llc_srv_add_link() has no protection and may add a new link to link group. This breaks the security environment protected by llc_conf_mutex.

Package Linux Kernel

Published 2025-12-30

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 5.8 and later are affected. Fixed in 6.1.16, 6.2.3, 6.3 and their respective stable series.

Affected from

≥ 5.8

Fixed in

✓ 6.1.16 6.1.x ✓ 6.2.3 6.2.x ✓ 6.3

References

The following references provide additional information about CVE-2023-54237 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/0c764cc271d3aa6528ae1b3394babf34ac01f775
Patch
Kernel patch commit
https://git.kernel.org/stable/c/e40b801b3603a8f90b46acbacdea3505c27f01c0
Patch
Kernel patch commit
https://git.kernel.org/stable/c/f2f46de98c11d41ac8d22765f47ba54ce5480a5b
Patch

Frequently asked questions

What is CVE-2023-54237?

CVE-2023-54237 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.8 onward and has been patched in 6.1.16, 6.2.3 and 6.3. CVE-2023-54237 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2023-54237?

Yes — CVE-2023-54237 has been patched. Fixed versions include 6.1.16, 6.2.3 and 6.3. If you are running Linux kernel 5.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-54237 actively exploited?

No — CVE-2023-54237 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.