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Vulnerability · Published May 1, 2024 · Assigned by Linux

CVE-2024-26954ksmbd: fix slab-out-of-bounds in smb_strndup_from_utf16()

High 8.1

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 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.1High
Exploit odds (30 days)0.7%top 46.8% 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: ksmbd: fix slab-out-of-bounds in smb_strndup_from_utf16() If ->NameOffset of smb2_create_req is smaller than Buffer offset of smb2_create_req, slab-out-of-bounds read can happen from smb2_open. This patch set the minimum value of the name offset to the buffer offset to validate name length of smb2_create_req().

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.119-1DEBIAN-CVE-2024-26954
Debian:12linux6.1.119-1DSA-5818-1
Debian:13linux6.7.12-1DEBIAN-CVE-2024-26954
Debian:14linux6.7.12-1DEBIAN-CVE-2024-26954
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2024-26954
Ubuntu:24.04:LTSlinux6.8.0-35.35UBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2024-26954
Ubuntu:24.04:LTSlinux-aws6.8.0-1009.9UBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2024-26954
Ubuntu:24.04:LTSlinux-azure6.8.0-1008.8UBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2024-26954
Ubuntu:24.04:LTSlinux-gcp6.8.0-1008.9UBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2024-26954
Ubuntu:24.04:LTSlinux-gke6.8.0-1004.7UBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2024-26954
Ubuntu:24.04:LTSlinux-ibm6.8.0-1006.6UBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2024-26954
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-35.35.1UBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-26954
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1006.6UBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2024-26954
Ubuntu:24.04:LTSlinux-oracle6.8.0-1006.6UBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2024-26954
Ubuntu:24.04:LTSlinux-raspi6.8.0-1005.5UBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-26954
Ubuntu:24.04:LTSlinux-riscv6.8.0-35.35.1UBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-26954
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2024-26954

Affected products (as reported)

VendorProductVersions
Linux Linux 0626e6641f6b467447c81dd7678a69c66f7746cf – before d70c2e0904ab3715c5673fd45788a464a246d1db0626e6641f6b467447c81dd7678a69c66f7746cf – before 9e4937cbc150f9d5a9b5576e1922ef0b5ed2eb720626e6641f6b467447c81dd7678a69c66f7746cf – before 3b8da67191e938a63d2736dabb4ac5d337e5de570626e6641f6b467447c81dd7678a69c66f7746cf – before 4f97e6a9d62cb1fce82fbf4baff44b83221bc1780626e6641f6b467447c81dd7678a69c66f7746cf – before a80a486d72e20bd12c335bcd38b6e6f19356b0aa
Linux Linux 5.15

References