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Vulnerability · Published Sep 18, 2024 · Assigned by Linux

CVE-2024-46801libfs: fix get_stashed_dentry()

High 7.8

In plain English

A high-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 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 90.0% 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: libfs: fix get_stashed_dentry() get_stashed_dentry() tries to optimistically retrieve a stashed dentry from a provided location. It needs to ensure to hold rcu lock before it dereference the stashed location to prevent UAF issues. Use rcu_dereference() instead of READ_ONCE() it's effectively equivalent with some lockdep bells and whistles and it communicates clearly that this expects rcu protection.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:13linux6.10.11-1DEBIAN-CVE-2024-46801
Debian:14linux6.10.11-1DEBIAN-CVE-2024-46801
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-46801
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-46801
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-46801

Affected products (as reported)

VendorProductVersions
Linux Linux 07fd7c329839cf0b8c7766883d830a1a0d12d1dd – before 03e2a1209a83a380df34a72f7d6d1bc6c74132c707fd7c329839cf0b8c7766883d830a1a0d12d1dd – before 4e32c25b58b945f976435bbe51f39b32d714052e
Linux Linux 6.9

References