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Vulnerability · Published Aug 17, 2024 · Assigned by Linux

CVE-2024-42265protect the fetch of ->fd[fd] in do_dup2() from mispredictions

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 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 79.6% 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: protect the fetch of ->fd[fd] in do_dup2() from mispredictions both callers have verified that fd is not greater than ->max_fds; however, misprediction might end up with tofree = fdt->fd[fd]; being speculatively executed. That's wrong for the same reasons why it's wrong in close_fd()/file_close_fd_locked(); the same solution applies - array_index_nospec(fd, fdt->max_fds) could differ from fd only in case of speculative execution on mispredicted path.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.106-1DEBIAN-CVE-2024-42265
Debian:13linux6.10.4-1DEBIAN-CVE-2024-42265
Debian:14linux6.10.4-1DEBIAN-CVE-2024-42265
Ubuntu:22.04:LTSlinux5.15.0-125.135UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux5.15.0-125.135USN-7100-1
Ubuntu:24.04:LTSlinux6.8.0-50.51USN-7154-1
Ubuntu:24.04:LTSlinux6.8.0-50.51UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-aws5.15.0-1072.78UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-aws5.15.0-1072.78USN-7100-2
Ubuntu:24.04:LTSlinux-aws6.8.0-1020.22USN-7154-1
Ubuntu:24.04:LTSlinux-aws6.8.0-1020.22UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1020.22~22.04.1USN-7154-1
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1020.22~22.04.1UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-azure5.15.0-1075.84USN-7123-1
Ubuntu:22.04:LTSlinux-azure5.15.0-1075.84UBUNTU-CVE-2024-42265
Ubuntu:24.04:LTSlinux-azure6.8.0-1020.23UBUNTU-CVE-2024-42265
Ubuntu:24.04:LTSlinux-azure6.8.0-1020.23USN-7196-1
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1020.23~22.04.1UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1020.23~22.04.1USN-7196-1
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1076.85.1UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-gcp5.15.0-1071.79USN-7100-1
Ubuntu:22.04:LTSlinux-gcp5.15.0-1071.79UBUNTU-CVE-2024-42265
Ubuntu:24.04:LTSlinux-gcp6.8.0-1019.21USN-7154-1
Ubuntu:24.04:LTSlinux-gcp6.8.0-1019.21UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1019.21~22.04.1UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1019.21~22.04.1USN-7154-1
Ubuntu:22.04:LTSlinux-gke5.15.0-1069.75UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-gke5.15.0-1069.75USN-7100-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1015.19USN-7154-1
Ubuntu:24.04:LTSlinux-gke6.8.0-1015.19UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1055.62UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1055.62USN-7100-1
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1002.4UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-50.51~22.04.1USN-7154-2
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-50.51~22.04.1UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-ibm5.15.0-1065.68USN-7100-1
Ubuntu:22.04:LTSlinux-ibm5.15.0-1065.68UBUNTU-CVE-2024-42265
Ubuntu:24.04:LTSlinux-ibm6.8.0-1017.17UBUNTU-CVE-2024-42265
Ubuntu:24.04:LTSlinux-ibm6.8.0-1017.17USN-7154-1
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1017.17~22.04.1UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1067.73USN-7144-1
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1067.73UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-kvm5.15.0-1069.74USN-7100-1
Ubuntu:22.04:LTSlinux-kvm5.15.0-1069.74UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-125.135UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-125.135USN-7100-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-50.51.1UBUNTU-CVE-2024-42265
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-50.51.1USN-7154-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-50.51.1~22.04.1USN-7154-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-50.51.1~22.04.1UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1067.68USN-7100-1
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1067.68UBUNTU-CVE-2024-42265
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1019.21USN-7155-1
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1019.21UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1019.21~22.04.1UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1019.21~22.04.1USN-7155-1
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1019.21.1USN-7155-1
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1019.21.1UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1032.32UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1020.20UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-42265
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1018.18USN-7154-1
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1018.18UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-oracle5.15.0-1070.76UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-oracle5.15.0-1070.76USN-7100-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1017.18UBUNTU-CVE-2024-42265
Ubuntu:24.04:LTSlinux-oracle6.8.0-1017.18USN-7154-1
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1017.18~22.04.1UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1017.18~22.04.1USN-7154-1
Ubuntu:22.04:LTSlinux-raspi5.15.0-1065.68USN-7100-1
Ubuntu:22.04:LTSlinux-raspi5.15.0-1065.68UBUNTU-CVE-2024-42265
Ubuntu:24.04:LTSlinux-raspi6.8.0-1016.18UBUNTU-CVE-2024-42265
Ubuntu:24.04:LTSlinux-raspi6.8.0-1016.18USN-7154-1
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-42265
Ubuntu:24.04:LTSlinux-riscv6.8.0-50.51.1UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-50.51.1~22.04.1UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-42265
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1017.18UBUNTU-CVE-2024-42265
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1038.42USN-7100-1
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1038.42UBUNTU-CVE-2024-42265

Affected products (as reported)

VendorProductVersions
Linux Linux 8280d16172243702ed43432f826ca6130edb4086 – before ed42e8ff509d2a61c6642d1825032072dab79f268280d16172243702ed43432f826ca6130edb4086 – before 41a6c31df77bd8e050136b0a200b537da9e1084a8280d16172243702ed43432f826ca6130edb4086 – before 08775b3d6ed117cf4518754ec7300ee42b6a53688280d16172243702ed43432f826ca6130edb4086 – before 3f480493550b6a23d3a65d095d6569d4a7f56a0f8280d16172243702ed43432f826ca6130edb4086 – before 5db999fff545b924b24c9afd368ef5c17279b1768280d16172243702ed43432f826ca6130edb4086 – before da72e783afd27d9f487836b2e6738146c0edd1498280d16172243702ed43432f826ca6130edb4086 – before 1171ceccabfd596ca370c5d2cbb47d110c3f2fe18280d16172243702ed43432f826ca6130edb4086 – before 8aa37bde1a7b645816cda8b80df4753ecf172bf1
Linux Linux 3.7

References