CVE-2024-36945 net/smc: fix neighbour and rtable leak in smc_ib_find_route()

What is CVE-2024-36945?

CVE-2024-36945 is a high-severity denial of service vulnerability in Linux kernel, published on 30 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

net/smc: fix neighbour and rtable leak in smc_ib_find_route()

In smc_ib_find_route(), the neighbour found by neigh_lookup() and rtable resolved by ip_route_output_flow() are not released or put before return. It may cause the refcount leak, so fix it.

Weakness: CWE-401

Which versions are affected by CVE-2024-36945?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-36945?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2024-36945 being exploited?

There is no known exploitation of CVE-2024-36945 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• How this page is made

Also known as BELL-CVE-2024-36945, DEBIAN-CVE-2024-36945, ROOT-OS-UBUNTU-2204-CVE-2024-36945, UBUNTU-CVE-2024-36945.