CVE-2022-50074: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix memleak in aa_simple_write_to_buffer() When copy_from_user failed, the memory is freed by kvfree. however the management struct and data blob are allocated independently, so only kvfree(data) cause a memleak issue here. Use aa_put_loaddata(data) to fix this issue.

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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-401 CWE-401

Affected Products

Vendor	Product	Versions
linux	linux_kernel	4.17 — 4.19.256
linux	linux_kernel	4.20 — 5.4.211
linux	linux_kernel	5.5 — 5.10.138
linux	linux_kernel	5.11 — 5.15.63
linux	linux_kernel	5.16 — 5.19.4

References

Advisories & Patches

https://git.kernel.org/stable/c/417ea9fe972d2654a268ad66e89c8fcae67017c3 https://git.kernel.org/stable/c/6500eb3a48ac221051b1791818a1ac74744ef617 https://git.kernel.org/stable/c/6583edbf459de2e06b9759f264c0ae27e452b97a https://git.kernel.org/stable/c/7db182a2ebeefded86fea542fcc5d6a68bb77f58 https://git.kernel.org/stable/c/8aab4295582eb397a125d2788b829fa62b88dbf7 https://git.kernel.org/stable/c/bf7ebebce2c25071c719fd8a2f1307e0c243c2d7

Frequently Asked Questions

What is CVE-2022-50074? +

In the Linux kernel, the following vulnerability has been resolved: apparmor: Fix memleak in aa_simple_write_to_buffer() When copy_from_user failed, the memory is freed by kvfree. however the management struct and data blob are allocated independently, so only kvfree(data) cause a memleak issue here. Use aa_put_loaddata(data) to fix this issue. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-50074? +

CVE-2022-50074 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-2022-50074? +

CVE-2022-50074 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-2022-50074? +

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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CVE-2022-50074