CVE-2023-54237

/// Technical description

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: 00

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References