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Vulnerability · Published Oct 21, 2024 · Assigned by Linux

CVE-2024-47743KEYS: prevent NULL pointer dereference in find_asymmetric_key()

Medium 5.5

In plain English

A medium-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 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 87.1% 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: KEYS: prevent NULL pointer dereference in find_asymmetric_key() In find_asymmetric_key(), if all NULLs are passed in the id_{0,1,2} arguments, the kernel will first emit WARN but then have an oops because id_2 gets dereferenced anyway. Add the missing id_2 check and move WARN_ON() to the final else branch to avoid duplicate NULL checks. Found by Linux Verification Center (linuxtesting.org) with Svace static analysis tool.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.115-1DEBIAN-CVE-2024-47743
Debian:13linux6.11.2-1DEBIAN-CVE-2024-47743
Debian:14linux6.11.2-1DEBIAN-CVE-2024-47743
Ubuntu:24.04:LTSlinux6.8.0-54.56UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-aws6.8.0-1023.25UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1023.25~22.04.1UBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-azure6.8.0-1025.30UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1025.30~22.04.1UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-gcp6.8.0-1024.26UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1024.26~22.04.1UBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-gke6.8.0-1019.23UBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1006.8UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-57.59~22.04.1UBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-ibm6.8.0-1022.22UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-54.56.1UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-54.56.1~22.04.1UBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1022.25UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1022.25~22.04.2UBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1022.25.2UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-oem-6.116.11.0-1015.15UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1024.24UBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-oracle6.8.0-1020.21UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1020.21~22.04.1UBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-raspi6.8.0-1019.23UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-47743
Ubuntu:24.04:LTSlinux-riscv6.8.0-53.55.1UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-53.55.1~22.04.1UBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-47743
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-47743

Affected products (as reported)

VendorProductVersions
Linux Linux 7d30198ee24f2ddcc4fefcd38a9b76bd8ab31360 – before 3322fa8f2aa40b0b3651034cd541647a600cc6c07d30198ee24f2ddcc4fefcd38a9b76bd8ab31360 – before a3765b497a4f5224cb2f7a6a2d3357d3066214ee7d30198ee24f2ddcc4fefcd38a9b76bd8ab31360 – before 13b5b401ead95b5d8266f64904086c55b60249007d30198ee24f2ddcc4fefcd38a9b76bd8ab31360 – before 0d3b0706ada15c333e6f9faf19590ff715e45d1e7d30198ee24f2ddcc4fefcd38a9b76bd8ab31360 – before 70fd1966c93bf3bfe3fe6d753eb3d83a76597eef
Linux Linux 5.17

References