CVE-2022-48712: linux kernel Memory Corruption — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: fix error handling in ext4_fc_record_modified_inode() Current code does not fully takes care of krealloc() error case, which could lead to silent memory corruption or a kernel bug. This patch fixes that. Also it cleans up some duplicated error handling logic from various functions in fast_commit.c file.

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CVSS v3.1 Score

7.8

HIGH

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

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 5.10.99
linux	linux_kernel	5.11 — 5.15.22
linux	linux_kernel	5.16 — 5.16.8
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/14aa3f49c7fc6424763f4323bfbc3a807b0727dc https://git.kernel.org/stable/c/1b6762ecdf3cf12113772427c904aa3c420a1802 https://git.kernel.org/stable/c/62e46e0ffc02daa8fcfc02f7a932cc8a19601b19 https://git.kernel.org/stable/c/cdce59a1549190b66f8e3fe465c2b2f714b98a94 https://git.kernel.org/stable/c/14aa3f49c7fc6424763f4323bfbc3a807b0727dc https://git.kernel.org/stable/c/1b6762ecdf3cf12113772427c904aa3c420a1802 https://git.kernel.org/stable/c/62e46e0ffc02daa8fcfc02f7a932cc8a19601b19 https://git.kernel.org/stable/c/cdce59a1549190b66f8e3fe465c2b2f714b98a94

Frequently Asked Questions

What is CVE-2022-48712? +

In the Linux kernel, the following vulnerability has been resolved: ext4: fix error handling in ext4_fc_record_modified_inode() Current code does not fully takes care of krealloc() error case, which could lead to silent memory corruption or a kernel bug. This patch fixes that. Also it cleans up some duplicated error handling logic from various functions in fast_commit.c file. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-48712? +

CVE-2022-48712 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2022-48712? +

CVE-2022-48712 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-2022-48712? +

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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