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CVE-2023-3439

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-6255-1
Posted Jul 27, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6255-1 - It was discovered that the IP-VLAN network driver for the Linux kernel did not properly initialize memory in some situations, leading to an out-of- bounds write vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. Mingi Cho discovered that the netfilter subsystem in the Linux kernel did not properly validate the status of a nft chain while performing a lookup by id, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2023-3090, CVE-2023-31248, CVE-2023-3389, CVE-2023-3390, CVE-2023-3439, CVE-2023-35001
SHA-256 | b92e45b5821cbc38a01a9f4fad300b0ca630b46f0b15c730d3315c01259ea4d7
Ubuntu Security Notice USN-6246-1
Posted Jul 26, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6246-1 - It was discovered that the IP-VLAN network driver for the Linux kernel did not properly initialize memory in some situations, leading to an out-of- bounds write vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. Mingi Cho discovered that the netfilter subsystem in the Linux kernel did not properly validate the status of a nft chain while performing a lookup by id, leading to a use-after-free vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2023-3090, CVE-2023-31248, CVE-2023-3389, CVE-2023-3390, CVE-2023-3439, CVE-2023-35001
SHA-256 | 7f9ddb30c299540f775c7e9d346e63ed48d654b7514ccd96b18201204baecce7
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