CVE-2023-6270: fedora Use-After-Free (CVSS 7)

Description

A flaw was found in the ATA over Ethernet (AoE) driver in the Linux kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on `struct net_device`, and a use-after-free can be triggered by racing between the free on the struct and the access through the `skbtxq` global queue. This could lead to a denial of service condition or potential code execution.

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CVSS v3.1 Score

7.0

HIGH

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

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor	Product	Versions
debian	debian_linux	All
linux	linux_kernel	< 6.9
fedoraproject	fedora	All

References

Other References

https://access.redhat.com/security/cve/CVE-2023-6270 https://bugzilla.redhat.com/show_bug.cgi?id=2256786 https://access.redhat.com/security/cve/CVE-2023-6270 https://bugzilla.redhat.com/show_bug.cgi?id=2256786 https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html

Frequently Asked Questions

What is CVE-2023-6270? +

A flaw was found in the ATA over Ethernet (AoE) driver in the Linux kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on `struct net_device`, and a use-after-free can be triggered by racing between the free on the struct and the access through the `skbtxq` global queue. This could lead to a denial of service condition or potential code execution. It has a CVSS v3.1 base score of 7.0 (HIGH).

How severe is CVE-2023-6270? +

CVE-2023-6270 has a CVSS v3.1 score of 7.0 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-6270? +

CVE-2023-6270 affects products from debian, fedoraproject, linux, specifically: debian_linux, fedora, linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-6270? +

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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