CVE-2023-6270

Kernel: aoe: improper reference count leads to use-after-free vulnerability

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.

Remediation

Workaround:

  • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Category

7.0
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.02%
Third-Party Advisory redhat.com Third-Party Advisory redhat.com Third-Party Advisory debian.org Third-Party Advisory debian.org
Affected: Red Hat Red Hat Enterprise Linux 6
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9
Published at:
Updated at:

References

Link Tags
https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/block/aoe?h=v6.9&id=f98364e926626c678fb4b9004b75cacf92ff0662 patch
https://access.redhat.com/security/cve/CVE-2023-6270 third party advisory vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2256786 issue tracking third party advisory
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html third party advisory
https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-6270?
CVE-2023-6270 has been scored as a high severity vulnerability.
How to fix CVE-2023-6270?
As a workaround for remediating CVE-2023-6270: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Is CVE-2023-6270 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-6270 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-6270?
CVE-2023-6270 affects Red Hat Red Hat Enterprise Linux 6, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9.
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