CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
5.1%
A flaw was found in the MCTP protocol in the Linux kernel. The function
mctp_unregister() reclaims the device’s relevant resource when a netcard
detaches. However, a running routine may be unaware of this and cause the
use-after-free of the mdev->addrs object, potentially leading to a denial
of service.
Author | Note |
---|---|
rodrigo-zaiden | requires CAP_NET_ADMIN privileges. |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 22.04 | noarch | linux | < 5.15.0-78.85 | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < 5.15.0-1040.45 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < 5.15.0-1040.45~20.04.1 | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure | < 5.15.0-1042.49 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure-5.15 | < 5.15.0-1042.49~20.04.1 | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure-fde | < 5.15.0-1042.49.1 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure-fde-5.15 | < 5.15.0-1042.49~20.04.1.1 | UNKNOWN |
ubuntu | 22.04 | noarch | linux-bluefield | < 5.15.0-1021.23 | UNKNOWN |
ubuntu | 22.04 | noarch | linux-gcp | < 5.15.0-1038.46 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-gcp-5.15 | < 5.15.0-1038.46~20.04.1 | UNKNOWN |
git.kernel.org/linus/b561275d633bcd8e0e8055ab86f1a13df75a0269 (5.18-rc5)
github.com/torvalds/linux/commit/b561275d633bcd8e0e8055ab86f1a13df75a0269
launchpad.net/bugs/cve/CVE-2023-3439
nvd.nist.gov/vuln/detail/CVE-2023-3439
security-tracker.debian.org/tracker/CVE-2023-3439
ubuntu.com/security/notices/USN-6246-1
ubuntu.com/security/notices/USN-6255-1
www.cve.org/CVERecord?id=CVE-2023-3439
www.openwall.com/lists/oss-security/2023/07/02/1