ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()

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CVE-2026-68160 ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()

In the Linux kernel, the following vulnerability has been resolved: ceph: fix pre-auth out-of-bounds read on snaptrace in cephhandlecaps cephhandlecaps reads snaptracelen from the wire-format cephmdscaps header and uses it unconditionally to build a fake end pointer snaptrace + snaptracelen that ...

CVE-2026-68160

Summary: CVE-2026-68160 is a pre-auth, out-of-bounds read vulnerability in the Linux kernel’s Ceph code path (ceph_handle_caps) caused by using attacker-controlled snap_trace_len to compute an end pointer without proper bounds checks. The issue can lead to out-of-bounds reads of encoded snap data...

The vulnerability of the ceph_update_snapTrace() function in the fs/ceph/snap.c module, which is part of the Ceph distributed file system support for Linux operating systems, allows a attacker to cause a service failure.

The vulnerability of the cephupdatesnapTrace function in the fs/ceph/snap.c module, which is part of the Ceph distributed file system support for Linux operating systems, relates to the reutilization of previously freed memory. Exploiting this vulnerability could allow an attacker to cause a...