What’s Vulnerable › Vulnerabilities

CVE-2023-54315: powerpc/powernv/sriov: perform null check on iov before dereferencing iov

• Severity: unknown
• 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: 2025-12-30 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: powerpc/powernv/sriov: perform null check on iov before dereferencing iov Currently pointer iov is being dereferenced before the null check of iov which can lead to null pointer dereference errors. Fix this by moving the iov null check before the dereferencing. Detected using cppcheck static analysis: linux/arch/powerpc/platforms/powernv/pci-sriov.c:597:12: warning: Either the condition '!iov' is redundant or there is possible null pointer dereference: iov. [nullPointerRedundantCheck] num_vfs = iov->num_vfs; ^

Affected products

• Linux kernel: 5.9 — fixed in 6.5

How to fix

Upgrade to a fixed version: Linux kernel 6.5. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/07c19c0ad4b07f4b598da369714de028f6a6a323
• https://git.kernel.org/stable/c/6314465b88072a6b6f3b3c12a7898abe09095f95
• https://git.kernel.org/stable/c/72990144e17e5e2cb378f1d9b10530b85b9bc382
• https://git.kernel.org/stable/c/d3a0d96c16e5f8d55e2c70163abda3c7c8328106
• https://git.kernel.org/stable/c/d9a1aaea856002cb58dfb7c8d8770400fa1a0299
• https://git.kernel.org/stable/c/f4f913c980bc6abe0ccfe88fe3909c125afe4a2d

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