CVE-2024-44947

In the Linux kernel, the following vulnerability has been resolved: fuse: Initialize beyond-EOF page contents before setting uptodate fuse_notify_store(), unlike fuse_do_readpage(), does not enable page zeroing (because it can be used to change partial page contents). So fuse_notify_store() must be more careful to fully initialize page contents (including parts of the page that are beyond end-of-file) before marking the page uptodate. The current code can leave beyond-EOF page contents uninitialized, which makes these uninitialized page contents visible to userspace via mmap(). This is an information leak, but only affects systems which do not enable init-on-alloc (via CONFIG_INIT_ON_ALLOC_DEFAULT_ON=y or the corresponding kernel command line parameter).

• linux linux kernel (>= 2.6.36 < 4.19.321) • linux linux kernel (>= 4.20 < 5.4.283) • linux linux kernel (>= 5.5 < 5.10.225) • linux linux kernel (>= 5.11 < 5.15.166) • linux linux kernel (>= 5.16 < 6.1.107) • linux linux kernel (>= 6.2 < 6.6.48) • linux linux kernel (>= 6.7 < 6.10.7) • linux linux kernel 6.11