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Vulnerability · Published Nov 19, 2024 · Assigned by Linux

CVE-2024-53066nfs: Fix KMSAN warning in decode_getfattr_attrs()

Critical 9.8

In plain English

A critical-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.7%top 48.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: nfs: Fix KMSAN warning in decode_getfattr_attrs() Fix the following KMSAN warning: CPU: 1 UID: 0 PID: 7651 Comm: cp Tainted: G B Tainted: [B]=BAD_PAGE Hardware name: QEMU Standard PC (Q35 + ICH9, 2009) ===================================================== ===================================================== BUG: KMSAN: uninit-value in decode_getfattr_attrs+0x2d6d/0x2f90 decode_getfattr_attrs+0x2d6d/0x2f90 decode_getfattr_generic+0x806/0xb00 nfs4_xdr_dec_getattr+0x1de/0x240 rpcauth_unwrap_resp_decode+0xab/0x100 rpcauth_unwrap_resp+0x95/0xc0 call_decode+0x4ff/0xb50 __rpc_execute+0x57b/0x19d0 rpc_execute+0x368/0x5e0 rpc_run_task+0xcfe/0xee0 nfs4_proc_getattr+0x5b5/0x990 __nfs_revalidate_inode+0x477/0xd00 nfs_access_get_cached+0x1021/0x1cc0 nfs_do_access+0x9f/0xae0 nfs_permission+0x1e4/0x8c0 inode_permission+0x356/0x6c0 link_path_walk+0x958/0x1330 path_lookupat+0xce/0x6b0 filename_lookup+0x23e/0x770 vfs_statx+0xe7/0x970 vfs_fstatat+0x1f2/0x2c0 __se_sys_newfstatat+0x67/0x880 __x64_sys_newfstatat+0xbd/0x120 x64_sys_call+0x1826/0x3cf0 do_syscall_64+0xd0/0x1b0 entry_SYSCALL_64_after_hwframe+0x77/0x7f The KMSAN warning is triggered in decode_getfattr_attrs(), when calling decode_attr_mdsthreshold(). It appears that fattr->mdsthreshold is not initialized. Fix the issue by initializing fattr->mdsthreshold to NULL in nfs_fattr_init().

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.119-1DEBIAN-CVE-2024-53066
Debian:13linux6.11.9-1DEBIAN-CVE-2024-53066
Debian:14linux6.11.9-1DEBIAN-CVE-2024-53066
Ubuntu:22.04:LTSlinux5.15.0-133.144UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux6.8.0-58.60UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-aws5.15.0-1078.85UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-aws6.8.0-1027.29UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1027.29~22.04.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-azure5.15.0-1081.90UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-azure6.8.0-1027.32UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1012.12~24.04.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1027.32~22.04.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1081.90.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-azure-nvidia6.8.0-1014.15UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-gcp5.15.0-1077.86UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-gcp6.8.0-1028.30UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-gcp-6.116.11.0-1011.11~24.04.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1028.30~22.04.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-gke5.15.0-1075.81UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-gke6.8.0-1023.27UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1060.68UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1010.12UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-58.60~22.04.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-ibm5.15.0-1070.73UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-ibm6.8.0-1024.24UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1024.24~22.04.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1073.79UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-kvm5.15.0-1076.81UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-133.143UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-58.60.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-58.60.1~22.04.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1072.73UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1026.29UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-nvidia-6.116.11.0-1007.7UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1026.29~22.04.1UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1026.29.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1033.33UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1008.8UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1021.21UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-oem-6.116.11.0-1015.15UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1026.26UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-oracle5.15.0-1075.81UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-oracle6.8.0-1024.25UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1024.25~22.04.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-raspi5.15.0-1072.75UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-raspi6.8.0-1028.32UBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-riscv6.8.0-58.60.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-58.60.1~22.04.1UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-53066
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1017.18UBUNTU-CVE-2024-53066
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1044.48UBUNTU-CVE-2024-53066

Affected products (as reported)

VendorProductVersions
Linux Linux 88034c3d88c2c48b215f2cc5eb22e564aa817f9c – before 25ffd294fef81a7f3cd9528adf21560c04d9874788034c3d88c2c48b215f2cc5eb22e564aa817f9c – before bbfcd261cc068fe1cd02a4e871275074a0daa4e288034c3d88c2c48b215f2cc5eb22e564aa817f9c – before 8fc5ea9231af9122d227c9c13f5e578fca48d2e388034c3d88c2c48b215f2cc5eb22e564aa817f9c – before 9b453e8b108a5a93a6e348cf2ba4c9c138314a0088034c3d88c2c48b215f2cc5eb22e564aa817f9c – before f6b2b2b981af8e7d7c62d34143acefa4e1edfe8b88034c3d88c2c48b215f2cc5eb22e564aa817f9c – before f749cb60a01f8391c760a1d6ecd938cadacf954988034c3d88c2c48b215f2cc5eb22e564aa817f9c – before 9be0a21ae52b3b822d0eec4d14e909ab394f8a9288034c3d88c2c48b215f2cc5eb22e564aa817f9c – before dc270d7159699ad6d11decadfce9633f0f71c1db
Linux Linux 3.5

Weakness: CWE-908 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References