CVE-2023-54315

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux052da31d45fc71238ea8bed7e9a84648a1ee0bf3 < 07c19c0ad4b07f4b598da369714de028f6a6a323affected
LinuxLinux052da31d45fc71238ea8bed7e9a84648a1ee0bf3 < d3a0d96c16e5f8d55e2c70163abda3c7c8328106affected
LinuxLinux052da31d45fc71238ea8bed7e9a84648a1ee0bf3 < d9a1aaea856002cb58dfb7c8d8770400fa1a0299affected
LinuxLinux052da31d45fc71238ea8bed7e9a84648a1ee0bf3 < 6314465b88072a6b6f3b3c12a7898abe09095f95affected
LinuxLinux052da31d45fc71238ea8bed7e9a84648a1ee0bf3 < 72990144e17e5e2cb378f1d9b10530b85b9bc382affected
LinuxLinux052da31d45fc71238ea8bed7e9a84648a1ee0bf3 < f4f913c980bc6abe0ccfe88fe3909c125afe4a2daffected
LinuxLinux5.9affected
LinuxLinux0 < 5.9unaffected
LinuxLinux5.10.188 <= 5.10.*unaffected
LinuxLinux5.15.121 <= 5.15.*unaffected
LinuxLinux6.1.39 <= 6.1.*unaffected
LinuxLinux6.3.13 <= 6.3.*unaffected
LinuxLinux6.4.4 <= 6.4.*unaffected
LinuxLinux6.5 <= *unaffected

Weaknesses

References