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redhat/kernel-rtLast updated 25 April 2025

Risk 34
Severity
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

A flaw was found in the Linux kernel. A memory leak in the ccp-ops crypto driver can allow attackers to cause a denial of service. This vulnerability is similar with the older CVE-2019-18808. The highest threat from this vulnerability is to system availability.

1 / 4

Remedy

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation baser or stability.
First published (updated )
CVE-2021-3744

debian/grub2A flaw was found in grub2 when handling a PNG image header. When decoding the data contained in the …

Risk 61
Severity
6.9
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

A flaw was found in grub2 when handling a PNG image header. When decoding the data contained in the Huffman table at the PNG file header, an out-of-bounds write may happen on grub's heap.

1 / 4
First published (updated )
CVE-2021-3696

redhat/kernel-rtNull Pointer Dereference

Risk 33
Severity
5.5
Null Pointer Dereference
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

A NULL pointer dereference flaw was found in the Linux kernel’s IEEE 802.15.4 wireless networking subsystem in the way the user closes the LR-WPAN connection. This flaw allows a local user to crash the system. The highest threat from this vulnerability is to system availability.

1 / 3

Remedy

To mitigate this issue, prevent the module mac802154 from being loaded. Please see https://access.redhat.com/solutions/41278 for information on how to blacklist a kernel module to prevent it from loading automatically.
First published (updated )
CVE-2021-3659

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