CVE-2023-3090: Out-of-bounds write in Linux kernel's ipvlan network driver
A heap out-of-bounds write vulnerability in the Linux Kernel ipvlan network driver can be exploited to achieve local privilege escalation.
The out-of-bounds write is caused by missing skb->cb initialization in the ipvlan network driver. The vulnerability is reachable if CONFIGIPVLAN is enabled.
We recommend upgrading past commit 90cbed5247439a966b645b34eb0a2e037836ea8e.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/kernelto a version that resolves this vulnerability.Fixed in 6.4 - Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.223-1Fixed in 5.10.251-5Fixed in 6.1.170-3Fixed in 6.1.172-1Fixed in 6.12.86-1Fixed in 6.12.88-1Fixed in 7.0.7-1 - Upgrade
Upgrade
Linux kernel ipvlan network driverto a version that resolves this vulnerability.Fixed in 90cbed5247439a966b645b34eb0a2e037836ea8e - Configuration
If ipvlan is not required, disable it by setting CONFIG_IPVLAN to disabled; the vulnerability is reachable when CONFIG_IPVLAN is enabled.
Linux kernel CONFIG_IPVLAN = disabled
Event History
Frequently Asked Questions
What is the severity of CVE-2023-3090?
CVE-2023-3090 is categorized as a local privilege escalation vulnerability affecting the Linux Kernel ipvlan network driver.
How do I fix CVE-2023-3090?
To fix CVE-2023-3090, update the Linux Kernel to version 6.4 or apply specific patches from your distribution provider.
What software is affected by CVE-2023-3090?
CVE-2023-3090 affects various versions of the Linux Kernel including those up to version 6.4 and a range of Debian and Red Hat distributions.
What causes CVE-2023-3090?
CVE-2023-3090 is caused by a heap out-of-bounds write due to missing skb->cb initialization in the ipvlan network driver.
Can CVE-2023-3090 be exploited remotely?
CVE-2023-3090 is a local privilege escalation vulnerability, meaning it requires local access to exploit.