{"id":"AZL-53915","summary":"CVE-2024-53066 affecting package kernel for versions less than 5.15.173.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfs: Fix KMSAN warning in decode_getfattr_attrs()\n\nFix the following KMSAN warning:\n\nCPU: 1 UID: 0 PID: 7651 Comm: cp Tainted: G    B\nTainted: [B]=BAD_PAGE\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009)\n=====================================================\n=====================================================\nBUG: KMSAN: uninit-value in decode_getfattr_attrs+0x2d6d/0x2f90\n decode_getfattr_attrs+0x2d6d/0x2f90\n decode_getfattr_generic+0x806/0xb00\n nfs4_xdr_dec_getattr+0x1de/0x240\n rpcauth_unwrap_resp_decode+0xab/0x100\n rpcauth_unwrap_resp+0x95/0xc0\n call_decode+0x4ff/0xb50\n __rpc_execute+0x57b/0x19d0\n rpc_execute+0x368/0x5e0\n rpc_run_task+0xcfe/0xee0\n nfs4_proc_getattr+0x5b5/0x990\n __nfs_revalidate_inode+0x477/0xd00\n nfs_access_get_cached+0x1021/0x1cc0\n nfs_do_access+0x9f/0xae0\n nfs_permission+0x1e4/0x8c0\n inode_permission+0x356/0x6c0\n link_path_walk+0x958/0x1330\n path_lookupat+0xce/0x6b0\n filename_lookup+0x23e/0x770\n vfs_statx+0xe7/0x970\n vfs_fstatat+0x1f2/0x2c0\n __se_sys_newfstatat+0x67/0x880\n __x64_sys_newfstatat+0xbd/0x120\n x64_sys_call+0x1826/0x3cf0\n do_syscall_64+0xd0/0x1b0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nThe KMSAN warning is triggered in decode_getfattr_attrs(), when calling\ndecode_attr_mdsthreshold(). It appears that fattr-\u003emdsthreshold is not\ninitialized.\n\nFix the issue by initializing fattr-\u003emdsthreshold to NULL in\nnfs_fattr_init().","modified":"2026-04-01T05:18:09.906607Z","published":"2024-11-19T18:15:26Z","upstream":["CVE-2024-53066"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-53066"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.173.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-53915.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}