Linux · Linux Kernel · CVE-2026-43407
**Name of the Vulnerable Software and Affected Versions**
Linux kernel (affected versions not specified)
**Description**
An out-of-bounds access exists in the `ceph handle auth reply()` function within libceph, triggered by a message of type 'CEPH MSG AUTH REPLY'. The issue occurs because the `payload len` field is stored as an integer; a value exceeding `INT MAX` causes an integer overflow, resulting in a negative value. This leads to the pointer address being decremented and subsequently accessed, as the `ceph decode need()` function only verifies that memory access does not exceed the allocation end address.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.