CVE-2022-49855 net: wwan: iosm: fix memory leak in ipc_pcie_read_bios_cfg
A memory leak in the Linux kernel WWAN driver allows attackers to cause a denial of service by exhausting system memory.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-49855?
CVE-2022-49855 is a medium-severity memory corruption vulnerability in Linux kernel, published on 1 May 2025. 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:
net: wwan: iosm: fix memory leak in ipc_pcie_read_bios_cfg
ipc_pcie_read_bios_cfg() is using the acpi_evaluate_dsm() to obtain the wwan power state configuration from BIOS but is not freeing the acpi_object. The acpi_evaluate_dsm() returned acpi_object to be freed.
Free the acpi_object after use.
Weakness: CWE-401
Which versions are affected by CVE-2022-49855?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49855?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-49855 being exploited?
There is no known exploitation of CVE-2022-49855 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49855, GHSA-m3j7-r27p-7m78, UBUNTU-CVE-2022-49855.