CVE-2024-47749 RDMA/cxgb4: Added NULL check for lookup_atid

What is CVE-2024-47749?

CVE-2024-47749 is a high-severity vulnerability in Linux kernel, published on 21 Oct 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:

RDMA/cxgb4: Added NULL check for lookup_atid

The lookup_atid() function can return NULL if the ATID is invalid or does not exist in the identifier table, which could lead to dereferencing a null pointer without a check in the `act_establish()` and `act_open_rpl()` functions. Add a NULL check to prevent null pointer dereferencing.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Weakness: CWE-476

Which versions are affected by CVE-2024-47749?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-47749?

Apply the vendor's patch.

Is CVE-2024-47749 being exploited?

There is no known exploitation of CVE-2024-47749 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
• GitHub advisory
• How this page is made

Also known as AZL-50673, AZL-50682, BELL-CVE-2024-47749, DEBIAN-CVE-2024-47749, GHSA-pr54-g5f8-4jqw, UBUNTU-CVE-2024-47749.