What’s Vulnerable › Vulnerabilities

CVE-2023-52744: RDMA/irdma: Fix potential NULL-ptr-dereference

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-21 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Fix potential NULL-ptr-dereference in_dev_get() can return NULL which will cause a failure once idev is dereferenced in in_dev_for_each_ifa_rtnl(). This patch adds a check for NULL value in idev beforehand. Found by Linux Verification Center (linuxtesting.org) with SVACE.

Affected products

• Linux kernel: from 5.14 before 5.15.94; from 5.16 before 6.1.12; 6.2-rc1, 6.2-rc2, 6.2-rc3, 6.2-rc4, 6.2-rc5, 6.2-rc6 (+1) — fixed in 5.15.94, 6.1.12

How to fix

Upgrade to a fixed version: Linux kernel 5.15.94, 6.1.12. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/360682fe7df262d94fae54f737c487bec0f9190d
• https://git.kernel.org/stable/c/5d9745cead1f121974322b94ceadfb4d1e67960e
• https://git.kernel.org/stable/c/8f5fe1cd8e6a97f94840b55f59ed08cbc397086f
• https://git.kernel.org/stable/c/360682fe7df262d94fae54f737c487bec0f9190d
• https://git.kernel.org/stable/c/5d9745cead1f121974322b94ceadfb4d1e67960e
• https://git.kernel.org/stable/c/8f5fe1cd8e6a97f94840b55f59ed08cbc397086f

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