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Vulnerability · Published May 1, 2024 · Assigned by Linux

CVE-2024-27390ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down()

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 0.2% (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 87.0% 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: ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down() As discussed in the past (commit 2d3916f31891 ("ipv6: fix skb drops in igmp6_event_query() and igmp6_event_report()")) I think the synchronize_net() call in ipv6_mc_down() is not needed. Under load, synchronize_net() can last between 200 usec and 5 ms. KASAN seems to agree as well.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12linux6.1.85-1DEBIAN-CVE-2024-27390
Debian:13linux6.7.12-1DEBIAN-CVE-2024-27390
Debian:14linux6.7.12-1DEBIAN-CVE-2024-27390
Ubuntu:22.04:LTSlinux5.15.0-112.122UBUNTU-CVE-2024-27390
Ubuntu:24.04:LTSlinux6.8.0-35.35UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-aws5.15.0-1063.69UBUNTU-CVE-2024-27390
Ubuntu:24.04:LTSlinux-aws6.8.0-1009.9UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-azure5.15.0-1066.75UBUNTU-CVE-2024-27390
Ubuntu:24.04:LTSlinux-azure6.8.0-1008.8UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-azure-fde5.15.0-1067.76.1UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-gcp5.15.0-1062.70UBUNTU-CVE-2024-27390
Ubuntu:24.04:LTSlinux-gcp6.8.0-1008.9UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-gke5.15.0-1060.66UBUNTU-CVE-2024-27390
Ubuntu:24.04:LTSlinux-gke6.8.0-1004.7UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-gkeop5.15.0-1046.53UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-ibm5.15.0-1056.59UBUNTU-CVE-2024-27390
Ubuntu:24.04:LTSlinux-ibm6.8.0-1006.6UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-intel-iotg5.15.0-1058.64UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-kvm5.15.0-1060.65UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-lowlatency5.15.0-110.120UBUNTU-CVE-2024-27390
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-35.35.1UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-nvidia5.15.0-1058.59UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-nvidia-tegra5.15.0-1026.26UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-nvidia-tegra-igx5.15.0-1015.15UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-27390
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1006.6UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-oracle5.15.0-1061.67UBUNTU-CVE-2024-27390
Ubuntu:24.04:LTSlinux-oracle6.8.0-1006.6UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-raspi5.15.0-1058.61UBUNTU-CVE-2024-27390
Ubuntu:24.04:LTSlinux-raspi6.8.0-1005.5UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-27390
Ubuntu:24.04:LTSlinux-riscv6.8.0-35.35.1UBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-27390
Ubuntu:22.04:LTSlinux-xilinx-zynqmp5.15.0-1030.34UBUNTU-CVE-2024-27390

Affected products (as reported)

VendorProductVersions
Linux Linux 94d6a071ab2f26eb18a83109940db0cec19552fd – before bfd2f3c58ad86ad33db80515e6c3503e0414e44bf185de28d9ae6c978135993769352e523ee8df06 – before 9d159d6637ccce25f879d662a480541ef4ba3a50f185de28d9ae6c978135993769352e523ee8df06 – before a03ede2282ebbd181bd6f5c38cbfcb5765afcd04f185de28d9ae6c978135993769352e523ee8df06 – before 26d4bac55750d535f1f0b8790dc26daf6089e373f185de28d9ae6c978135993769352e523ee8df06 – before 7eb06ee5921189812e6b4bfe7b0f1e878be16df7f185de28d9ae6c978135993769352e523ee8df06 – before 5da9a218340a2bc804dc4327e5804392e24a0b88f185de28d9ae6c978135993769352e523ee8df06 – before 17ef8efc00b34918b966388b2af0993811895a8c
Linux Linux 5.13

References