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Vulnerability · Published Jul 12, 2024 · Assigned by Linux

CVE-2024-40921net: bridge: mst: pass vlan group directly to br_mst_vlan_set_state

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 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 78.5% 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: net: bridge: mst: pass vlan group directly to br_mst_vlan_set_state Pass the already obtained vlan group pointer to br_mst_vlan_set_state() instead of dereferencing it again. Each caller has already correctly dereferenced it for their context. This change is required for the following suspicious RCU dereference fix. No functional changes intended.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.99-1DEBIAN-CVE-2024-40921
Debian:12linux6.1.99-1DSA-5731-1
Debian:13linux6.9.7-1DEBIAN-CVE-2024-40921
Debian:14linux6.9.7-1DEBIAN-CVE-2024-40921
Ubuntu:24.04:LTSlinux6.8.0-44.44UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-40921
Ubuntu:24.04:LTSlinux-aws6.8.0-1015.16UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1015.16~22.04.1UBUNTU-CVE-2024-40921
Ubuntu:24.04:LTSlinux-azure6.8.0-1014.16UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1014.16~22.04.1UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-40921
Ubuntu:24.04:LTSlinux-gcp6.8.0-1014.16UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1014.16~22.04.1UBUNTU-CVE-2024-40921
Ubuntu:24.04:LTSlinux-gke6.8.0-1010.13UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-45.45~22.04.1UBUNTU-CVE-2024-40921
Ubuntu:24.04:LTSlinux-ibm6.8.0-1012.12UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2024-40921
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-44.44.1UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-44.44.1~22.04.1UBUNTU-CVE-2024-40921
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1013.14UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1013.14~22.04.1UBUNTU-CVE-2024-40921
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1013.14.1UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-40921
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1012.12UBUNTU-CVE-2024-40921
Ubuntu:24.04:LTSlinux-oracle6.8.0-1012.12UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1012.12~22.04.1UBUNTU-CVE-2024-40921
Ubuntu:24.04:LTSlinux-raspi6.8.0-1011.12UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-40921
Ubuntu:24.04:LTSlinux-riscv6.8.0-44.44.1UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-44.44.1~22.04.1UBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-40921
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-40921

Affected products (as reported)

VendorProductVersions
Linux Linux 8ca9a750fc711911ef616ceb627d07357b04545e – before 09f4337c27f5bdeb8646a6db91488cc2f7d537ff4488617e5e995a09abe4d81add5fb165674edb59 – before a6cc9e9a651b9861efa068c164ee62dfba68c6cae43dd2b1ec746e105b7db5f9ad6ef14685a615a4 – before d2dc02775fc0c4eacaee833a0637e5958884a8e53a7c1661ae1383364cd6092d851f5e5da64d476b – before 36c92936e868601fa1f43da6758cf55805043509a2b01e65d9ba8af2bb086d3b7288ca53a07249ac6.8.12 – before 6.9
Linux Linux 6.1.93 – before 6.1.956.6.33 – before 6.6.356.9.3 – before 6.9.6

References