CVE-2022-48730 dma-buf: heaps: Fix potential spectre v1 gadget

What is CVE-2022-48730?

CVE-2022-48730 is a medium-severity vulnerability in Linux kernel, published on 20 Jun 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

dma-buf: heaps: Fix potential spectre v1 gadget

It appears like nr could be a Spectre v1 gadget as it's supplied by a user and used as an array index. Prevent the contents of kernel memory from being leaked to userspace via speculative execution by using array_index_nospec.

[sumits: added fixes and cc: stable tags]

Weakness: CWE-203

Which versions are affected by CVE-2022-48730?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-48730?

Apply the vendor's patch.

Is CVE-2022-48730 being exploited?

There is no known exploitation of CVE-2022-48730 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2022-48730, GHSA-88rc-96xj-2mvh, UBUNTU-CVE-2022-48730.