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Vulnerability · Published May 17, 2024 · Assigned by Linux

CVE-2024-27431cpumap: Zero-initialise xdp_rxq_info struct before running XDP program

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 14% 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 85.8% 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: cpumap: Zero-initialise xdp_rxq_info struct before running XDP program When running an XDP program that is attached to a cpumap entry, we don't initialise the xdp_rxq_info data structure being used in the xdp_buff that backs the XDP program invocation. Tobias noticed that this leads to random values being returned as the xdp_md->rx_queue_index value for XDP programs running in a cpumap. This means we're basically returning the contents of the uninitialised memory, which is bad. Fix this by zero-initialising the rxq data structure before running the XDP program.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.82-1DEBIAN-CVE-2024-27431
Debian:13linux6.7.12-1DEBIAN-CVE-2024-27431
Debian:14linux6.7.12-1DEBIAN-CVE-2024-27431
Ubuntu:22.04:LTSlinux5.15.0-112.122UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-aws5.15.0-1063.69UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-azure5.15.0-1066.75UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1067.76.1UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-gcp5.15.0-1062.70UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-gke5.15.0-1060.66UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1046.53UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-ibm5.15.0-1056.59UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1058.64UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-kvm5.15.0-1060.65UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-110.120UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1058.59UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1026.26UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1015.15UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-oracle5.15.0-1061.67UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-raspi5.15.0-1058.61UBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-27431
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1030.34UBUNTU-CVE-2024-27431

Affected products (as reported)

VendorProductVersions
Linux Linux 9216477449f33cdbc9c9a99d49f500b7fbb81702 – before 5f4e51abfbe6eb444fa91906a5cd0830442782979216477449f33cdbc9c9a99d49f500b7fbb81702 – before f0363af9619c77730764f10360e36c6445c12f7b9216477449f33cdbc9c9a99d49f500b7fbb81702 – before 3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be959216477449f33cdbc9c9a99d49f500b7fbb81702 – before f562e4c4aab00986dde3093c4be919c3f2b85a4a9216477449f33cdbc9c9a99d49f500b7fbb81702 – before eaa7cb836659ced2d9f814ac32aa3ec193803ed69216477449f33cdbc9c9a99d49f500b7fbb81702 – before 2487007aa3b9fafbd2cb14068f49791ce1d7ede5
Linux Linux 5.9

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

References