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CVE-2024-35984

i2c: smbus: fix NULL function pointer dereference

EPSS 0.3%
In the Linux kernel, the following vulnerability has been resolved: i2c: smbus: fix NULL function pointer dereference Baruch reported an OOPS when using the designware controller as target only. Target-only modes break the assumption of one transfer function always being available. Fix this by always checking the pointer in __i2c_transfer. [wsa: dropped the simplification in core-smbus to avoid theoretical regressions]
Affected products
Linux · Linux

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References
https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlhttps://cert-portal.siemens.com/productcert/html/ssa-613116.htmlhttps://git.kernel.org/stable/c/357c64ef1ef39b1e7cd91ab6bdd304d043702c83https://git.kernel.org/stable/c/40f1d79f07b49c8a64a861706e5163f2db4bd95dhttps://git.kernel.org/stable/c/4e75e222d397c6752b229ed72fc4644c8c36ecdehttps://git.kernel.org/stable/c/5a09eae9a7db597fe0c1fc91636205b4a25d2620https://git.kernel.org/stable/c/5fd72404587d7db4acb2d241fd8c387afb0a7aechttps://git.kernel.org/stable/c/91811a31b68d3765b3065f4bb6d7d6d84a7cfc9fhttps://git.kernel.org/stable/c/ad3c3ac7a03be3697114f781193dd3e9d97e6e23https://git.kernel.org/stable/c/e3425674ff68dc521c57c6eabad0cbd20a027d85https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlhttps://lists.debian.org/debian-lts-announce/2024/06/msg00020.html