CVE-2024-57890: RDMA/uverbs: Prevent integer overflow issue
In the Linux kernel, the following vulnerability has been resolved:
RDMA/uverbs: Prevent integer overflow issue
In the expression "cmd.wqesize cmd.wrcount", both variables are u32 values that come from the user so the multiplication can lead to integer wrapping. Then we pass the result to uverbsrequestnextptr() which also could potentially wrap. The "cmd.sgecount sizeof(struct ibuverbssge)" multiplication can also overflow on 32bit systems although it's fine on 64bit systems.
This patch does two things. First, I've re-arranged the condition in uverbsrequestnextptr() so that the use controlled variable "len" is on one side of the comparison by itself without any math. Then I've modified all the callers to use sizemul() for the multiplications.
Other sources
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— Launchpad
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.27-1 - Upgrade
Upgrade
debian/linux-6.1to a version that resolves this vulnerability.Fixed in 6.1.129-1~deb11u1 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 5.15.176.3-1 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.76.1-1
Event History
Frequently Asked Questions
What is the severity of CVE-2024-57890?
CVE-2024-57890 has a medium severity rating due to potential integer overflow vulnerabilities in the Linux kernel.
What versions of the Linux kernel are affected by CVE-2024-57890?
CVE-2024-57890 affects multiple versions of the Linux kernel, ranging from 2.6.15 to 6.12.9, including various release candidates.
How do I fix CVE-2024-57890?
To fix CVE-2024-57890, update your Linux kernel to a patched version that resolves the integer overflow vulnerability.
What is the impact of CVE-2024-57890?
The impact of CVE-2024-57890 includes potential denial of service attacks or escalation of privileges due to the integer overflow.
Is there a patch available for CVE-2024-57890?
Yes, patches for CVE-2024-57890 are available in the latest stable versions of the Linux kernel.