CVE-2026-63886

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Validate CHAPR length before base64 decode chapservercomputehash allocates clientdigest as kzallocchap-digestsize and then, for BASE64-encoded responses, passes chapr directly to chapbase64decode without...

CVE-2026-63886

The CVE-2026-63886 entry concerns the Linux kernel SCSI iSCSI path, where chap_server_compute_hash() could overflow a digest buffer during BASE64 decoding. Root cause: chap_r is fed to chap_base64_decode() without validation that the decoded output fits into client_digest (kzalloc(chap->digest...