SUSE CVE-2025-39941

In the Linux kernel, the following vulnerability has been resolved: zram: fix slot write race condition Parallel concurrent writes to the same zram index result in leaked zsmalloc handles. Schematically we can have something like this: CPU0 CPU1 zramslotlock zsfreehandle zramslotlock zramslotlock...

CVE-2025-39941

CVE-2025-39941 relates to the Linux kernel zram subsystem. The vulnerability arises from a race in slot write handling where parallel writes to the same zram index can leak zsmalloc handles because zs_free() is executed too early. The documented fix is to reset the zram entry and assign the new h...