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Vulnerability · Published Feb 23, 2024 · Assigned by Linux

CVE-2023-52462bpf: fix check for attempt to corrupt spilled pointer

Medium 5.5

In plain English

A medium-severity null pointer dereference 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 86.6% 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: bpf: fix check for attempt to corrupt spilled pointer When register is spilled onto a stack as a 1/2/4-byte register, we set slot_type[BPF_REG_SIZE - 1] (plus potentially few more below it, depending on actual spill size). So to check if some stack slot has spilled register we need to consult slot_type[7], not slot_type[0]. To avoid the need to remember and double-check this in the future, just use is_spilled_reg() helper.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.76-1DEBIAN-CVE-2023-52462
Debian:13linux6.6.15-1DEBIAN-CVE-2023-52462
Debian:14linux6.6.15-1DEBIAN-CVE-2023-52462
Ubuntu:22.04:LTSlinux5.15.0-102.112UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux5.15.0-102.112USN-6725-1
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-aws5.15.0-1057.63UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-aws5.15.0-1057.63USN-6725-2
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-azure5.15.0-1060.69USN-6725-1
Ubuntu:22.04:LTSlinux-azure5.15.0-1060.69UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-azure-6.56.5.0-1022.23~22.04.1USN-6819-1
Ubuntu:22.04:LTSlinux-azure-6.56.5.0-1022.23~22.04.1UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1060.69.1UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1060.69.1USN-6725-1
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-gcp5.15.0-1055.63UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-gcp5.15.0-1055.63USN-6725-1
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-gcp-6.56.5.0-1022.24~22.04.1USN-6818-1
Ubuntu:22.04:LTSlinux-gcp-6.56.5.0-1022.24~22.04.1UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-gke5.15.0-1054.59USN-6725-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1054.59UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1040.46UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1040.46USN-6725-1
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-hwe-6.56.5.0-41.41~22.04.2USN-6818-4
Ubuntu:22.04:LTSlinux-hwe-6.56.5.0-41.41~22.04.2UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-ibm5.15.0-1050.53USN-6725-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1050.53UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1052.58USN-6725-1
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1052.58UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-kvm5.15.0-1054.59USN-6725-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1054.59UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-102.112UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-102.112USN-6725-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.56.5.0-41.41.1~22.04.1UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.56.5.0-41.41.1~22.04.1USN-6818-1
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1048.48USN-6725-1
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1048.48UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-nvidia-6.56.5.0-1021.22UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-nvidia-6.56.5.0-1021.22USN-6818-3
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1025.25UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1012.12UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-oem-6.16.1.0-1035.35USN-6688-1
Ubuntu:22.04:LTSlinux-oem-6.16.1.0-1035.35UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-oem-6.56.5.0-1024.25UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-oem-6.56.5.0-1024.25USN-6819-3
Ubuntu:22.04:LTSlinux-oracle5.15.0-1055.61USN-6725-1
Ubuntu:22.04:LTSlinux-oracle5.15.0-1055.61UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-oracle-6.56.5.0-1024.24~22.04.1USN-6819-4
Ubuntu:22.04:LTSlinux-oracle-6.56.5.0-1024.24~22.04.1UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-raspi5.15.0-1050.53USN-6725-1
Ubuntu:22.04:LTSlinux-raspi5.15.0-1050.53UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-riscv-6.56.5.0-40.40.1~22.04.1UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-starfive-6.56.5.0-1015.16~22.04.1USN-6819-1
Ubuntu:22.04:LTSlinux-starfive-6.56.5.0-1015.16~22.04.1UBUNTU-CVE-2023-52462
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1030.34UBUNTU-CVE-2023-52462

Affected products (as reported)

VendorProductVersions
Linux Linux cdd73a5ed0840da88a3b9ad353f568e6f156d417 – before 2757f17972d87773b3677777f5682510f13c66ef07c286c10a9cedbd71f20269ff3a4e73d9aab2fe – before 67e6707f07354ed1acb4e65552e97c60cf9d69cf27113c59b6d0a587b29ae72d4ff3f832f58b0651 – before fc3e3c50a0a4cac1463967c110686189e4a5910427113c59b6d0a587b29ae72d4ff3f832f58b0651 – before 8dc15b0670594543c356567a1a45b0182ec6317427113c59b6d0a587b29ae72d4ff3f832f58b0651 – before 40617d45ea05535105e202a8a819e388a2b1f03627113c59b6d0a587b29ae72d4ff3f832f58b0651 – before ab125ed3ec1c10ccc36bc98c7a4256ad114a3dae5.10.163 – before 5.10.2095.15.86 – before 5.15.148
Linux Linux 5.16

Weakness: CWE-476

References