CVE-2025-68251

In the Linux kernel, the following vulnerability has been resolved: erofs: avoid infinite loops due to corrupted subpage compact indexes Robert reported an infinite loop observed by two crafted images. The root cause is that `clusterofs` can be larger than `lclustersize` for !NONHEAD `lclusters` in corrupted subpage compact indexes, e.g.: blocksize = lclustersize = 512 lcn = 6 clusterofs = 515 Move the corresponding check for full compress indexes to `z_erofs_load_lcluster_from_disk()` to also cover subpage compact compress indexes. It also fixes the position of `m->type >= Z_EROFS_LCLUSTER_TYPE_MAX` check, since it should be placed right after `z_erofs_load_{compact,full}_lcluster()`.

The following products are affected by CVE-2025-68251 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-68251.

URL	Resource
https://git.kernel.org/stable/c/8675447a8794983f2b7e694b378112772c17635e
https://git.kernel.org/stable/c/e13d315ae077bb7c3c6027cc292401bc0f4ec683
https://lore.kernel.org/linux-cve-announce/2025121624-CVE-2025-68251-782f@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-68251
https://www.cve.org/CVERecord?id=CVE-2025-68251