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Vulnerability · Published May 25, 2023 · Assigned by Google

CVE-2023-0459Copy_from_user Spectre-V1 Gadget in Linux Kernel

Medium 6.5

In plain English

A medium-severity security flaw in Linux Kernel from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.6%top 49.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Copy_from_user on 64-bit versions of the Linux kernel does not implement the __uaccess_begin_nospec allowing a user to bypass the "access_ok" check and pass a kernel pointer to copy_from_user(). This would allow an attacker to leak information. We recommend upgrading beyond commit 74e19ef0ff8061ef55957c3abd71614ef0f42f47

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.15-1DEBIAN-CVE-2023-0459
Debian:13linux6.1.15-1DEBIAN-CVE-2023-0459
Debian:14linux6.1.15-1DEBIAN-CVE-2023-0459
Ubuntu:22.04:LTSlinux5.15.0-72.79USN-6080-1
Ubuntu:22.04:LTSlinux5.15.0-72.79UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-aws5.15.0-1036.40USN-6080-1
Ubuntu:22.04:LTSlinux-aws5.15.0-1036.40UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-azure5.15.0-1038.45UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-azure5.15.0-1038.45USN-6080-1
Ubuntu:22.04:LTSlinux-azure-5.195.19.0-1026.29~22.04.1USN-6079-1
Ubuntu:22.04:LTSlinux-azure-5.195.19.0-1026.29~22.04.1UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1038.45.1USN-6080-1
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1038.45.1UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-gcp5.15.0-1034.42USN-6090-1
Ubuntu:22.04:LTSlinux-gcp5.15.0-1034.42UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-gke5.15.0-1033.38UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-gke5.15.0-1033.38USN-6090-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1020.25USN-6090-1
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1020.25UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-hwe-5.195.19.0-42.43~22.04.1UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-hwe-5.195.19.0-42.43~22.04.1USN-6096-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1030.33USN-6080-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1030.33UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1030.35USN-6133-1
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1030.35UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-kvm5.15.0-1033.38UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-kvm5.15.0-1033.38USN-6080-1
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-72.79UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-72.79USN-6080-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.195.19.0-1024.25~22.04.1UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1025.25UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-oem-5.175.17.0-1033.34UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-oem-5.175.17.0-1033.34USN-6174-1
Ubuntu:22.04:LTSlinux-oem-6.06.0.0-1019.19USN-6235-1
Ubuntu:22.04:LTSlinux-oem-6.06.0.0-1019.19UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-oem-6.16.1.0-1008.8UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-oracle5.15.0-1035.41UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-oracle5.15.0-1035.41USN-6080-1
Ubuntu:22.04:LTSlinux-raspi5.15.0-1029.31UBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-raspi5.15.0-1029.31USN-6085-1
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2023-0459
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2023-0459

Affected products (as reported)

VendorProductVersions
Linux Linux Kernel 4b842e4e25b12951fa10dedb4bc16bc47e3b850c – through 74e19ef0ff8061ef55957c3abd71614ef0f42f47

Weakness: CWE-763 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References