CVE-2022-49845: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: can: j1939: j1939_send_one(): fix missing CAN header initialization The read access to struct canxl_frame::len inside of a j1939 created skbuff revealed a missing initialization of reserved and later filled elements in struct can_frame. This patch initializes the 8 byte CAN header with zero.

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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-908 CWE-908

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.4 — 5.4.225
linux	linux_kernel	5.5 — 5.10.155
linux	linux_kernel	5.11 — 5.15.79
linux	linux_kernel	5.16 — 6.0.9
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/2719f82ad5d8199cf5f346ea8bb3998ad5323b72 https://git.kernel.org/stable/c/3eb3d283e8579a22b81dd2ac3987b77465b2a22f https://git.kernel.org/stable/c/69e86c6268d59ceddd0abe9ae8f1f5296f316c3c https://git.kernel.org/stable/c/d0513b095e1ef1469718564dec3fb3348556d0a8 https://git.kernel.org/stable/c/f8e0edeaa0f2b860bdbbf0aafb4492533043d650

Frequently Asked Questions

What is CVE-2022-49845? +

In the Linux kernel, the following vulnerability has been resolved: can: j1939: j1939_send_one(): fix missing CAN header initialization The read access to struct canxl_frame::len inside of a j1939 created skbuff revealed a missing initialization of reserved and later filled elements in struct can_frame. This patch initializes the 8 byte CAN header with zero. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49845? +

CVE-2022-49845 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-2022-49845? +

CVE-2022-49845 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-2022-49845? +

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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