CVE-2022-48777: linux kernel Null Dereference — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: mtd: parsers: qcom: Fix kernel panic on skipped partition In the event of a skipped partition (case when the entry name is empty) the kernel panics in the cleanup function as the name entry is NULL. Rework the parser logic by first checking the real partition number and then allocate the space and set the data for the valid partitions. The logic was also fundamentally wrong as with a skipped partition, the parts number returned was incorrect by not decreasing it for the skipped partitions.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.12 — 5.12.25
linux	linux_kernel	5.16 — 5.16.11

References

Advisories & Patches

https://git.kernel.org/stable/c/65d003cca335cabc0160d3cd7daa689eaa9dd3cd https://git.kernel.org/stable/c/a2995fe23095ceda2dc382fbe057f5e164595548 https://git.kernel.org/stable/c/eb03cb6e03ffd9173e18e5fe87e4e3ce83820453 https://git.kernel.org/stable/c/65d003cca335cabc0160d3cd7daa689eaa9dd3cd https://git.kernel.org/stable/c/a2995fe23095ceda2dc382fbe057f5e164595548 https://git.kernel.org/stable/c/eb03cb6e03ffd9173e18e5fe87e4e3ce83820453

Frequently Asked Questions

What is CVE-2022-48777? +

In the Linux kernel, the following vulnerability has been resolved: mtd: parsers: qcom: Fix kernel panic on skipped partition In the event of a skipped partition (case when the entry name is empty) the kernel panics in the cleanup function as the name entry is NULL. Rework the parser logic by first checking the real partition number and then allocate the space and set the data for the valid partitions. The logic was also fundamentally wrong as with a skipped partition, the parts number returned was incorrect by not decreasing it for the skipped partitions. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-48777? +

CVE-2022-48777 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-48777? +

CVE-2022-48777 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-48777? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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