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Vulnerability · Published May 30, 2024 · Assigned by Linux

CVE-2024-36931s390/cio: Ensure the copied buf is NUL terminated

High 7.1

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 NVD)7.1High
Exploit odds (30 days)0.2%top 85.7% 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: s390/cio: Ensure the copied buf is NUL terminated Currently, we allocate a lbuf-sized kernel buffer and copy lbuf from userspace to that buffer. Later, we use scanf on this buffer but we don't ensure that the string is terminated inside the buffer, this can lead to OOB read when using scanf. Fix this issue by using memdup_user_nul instead.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.94-1DEBIAN-CVE-2024-36931
Debian:13linux6.8.11-1DEBIAN-CVE-2024-36931
Debian:14linux6.8.11-1DEBIAN-CVE-2024-36931
Ubuntu:22.04:LTSlinux5.15.0-118.128UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux5.15.0-118.128USN-6950-1
Ubuntu:24.04:LTSlinux6.8.0-40.40UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-aws5.15.0-1067.73UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-aws5.15.0-1067.73USN-6950-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1013.14UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1013.14~22.04.1UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-azure5.15.0-1070.79USN-6956-1
Ubuntu:22.04:LTSlinux-azure5.15.0-1070.79UBUNTU-CVE-2024-36931
Ubuntu:24.04:LTSlinux-azure6.8.0-1012.14UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1012.14~22.04.1UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1070.79.1USN-6956-1
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1070.79.1UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-gcp5.15.0-1066.74USN-6950-1
Ubuntu:22.04:LTSlinux-gcp5.15.0-1066.74UBUNTU-CVE-2024-36931
Ubuntu:24.04:LTSlinux-gcp6.8.0-1012.13UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1012.13~22.04.1UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-gke5.15.0-1064.70UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-gke5.15.0-1064.70USN-6950-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1008.11UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1050.57USN-6950-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1050.57UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-40.40~22.04.3UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-ibm5.15.0-1060.63UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-ibm5.15.0-1060.63USN-6950-2
Ubuntu:24.04:LTSlinux-ibm6.8.0-1010.10UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1010.10~22.04.1UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1062.68USN-6950-1
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1062.68UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-kvm5.15.0-1064.69UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-kvm5.15.0-1064.69USN-6950-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-118.128USN-6950-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-118.128UBUNTU-CVE-2024-36931
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-40.40.1UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-40.40.1~22.04.1UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1062.63UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1062.63USN-6950-1
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1011.11UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1011.11~22.04.1UBUNTU-CVE-2024-36931
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1011.11.1UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1027.27UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1015.15UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-36931
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1010.10UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-oracle5.15.0-1065.71USN-6950-3
Ubuntu:22.04:LTSlinux-oracle5.15.0-1065.71UBUNTU-CVE-2024-36931
Ubuntu:24.04:LTSlinux-oracle6.8.0-1010.10UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1010.10~22.04.1UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-raspi5.15.0-1060.63USN-6950-2
Ubuntu:22.04:LTSlinux-raspi5.15.0-1060.63UBUNTU-CVE-2024-36931
Ubuntu:24.04:LTSlinux-raspi6.8.0-1009.10UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-36931
Ubuntu:24.04:LTSlinux-riscv6.8.0-40.40.1UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-40.40.1~22.04.1UBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-36931
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1035.39UBUNTU-CVE-2024-36931

Affected products (as reported)

VendorProductVersions
Linux Linux a4f17cc726712a52122ad38540bc3ff3a052d1a4 – before c9d48ce163305595ae20aee27774192476d5e6a5a4f17cc726712a52122ad38540bc3ff3a052d1a4 – before 10452edd175fcc4fd0f5ac782ed2a002e3e5d65ca4f17cc726712a52122ad38540bc3ff3a052d1a4 – before 84b38f48836662c4bfae646c014f4e981e16a2b2a4f17cc726712a52122ad38540bc3ff3a052d1a4 – before 06759ebaf75c19c87b2453a5e130e9e61e9b5d65a4f17cc726712a52122ad38540bc3ff3a052d1a4 – before da7c622cddd4fe36be69ca61e8c42e43cde94784
Linux Linux 5.13

References