CWE
119 190 416 362
Advisory Published

USN-4979-1: Linux kernel vulnerabilities

First published: Fri Jun 04 2021(Updated: )

Kiyin (尹亮) discovered that the NFC LLCP protocol implementation in the Linux kernel contained a reference counting error. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-25670) Kiyin (尹亮) discovered that the NFC LLCP protocol implementation in the Linux kernel did not properly deallocate memory in certain error situations. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2020-25671, CVE-2020-25672) Kiyin (尹亮) discovered that the NFC LLCP protocol implementation in the Linux kernel did not properly handle error conditions in some situations, leading to an infinite loop. A local attacker could use this to cause a denial of service. (CVE-2020-25673) It was discovered that the Realtek RTL8188EU Wireless device driver in the Linux kernel did not properly validate ssid lengths in some situations. An attacker could use this to cause a denial of service (system crash). (CVE-2021-28660) Zygo Blaxell discovered that the btrfs file system implementation in the Linux kernel contained a race condition during certain cloning operations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-28964) Vince Weaver discovered that the perf subsystem in the Linux kernel did not properly handle certain PEBS records properly for some Intel Haswell processors. A local attacker could use this to cause a denial of service (system crash). (CVE-2021-28971) It was discovered that the RPA PCI Hotplug driver implementation in the Linux kernel did not properly handle device name writes via sysfs, leading to a buffer overflow. A privileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-28972) It was discovered that the Qualcomm IPC router implementation in the Linux kernel did not properly initialize memory passed to user space. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-29647) Dan Carpenter discovered that the block device manager (dm) implementation in the Linux kernel contained a buffer overflow in the ioctl for listing devices. A privileged local attacker could use this to cause a denial of service (system crash). (CVE-2021-31916) It was discovered that the CIPSO implementation in the Linux kernel did not properly perform reference counting in some situations, leading to use- after-free vulnerabilities. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33033) Wolfgang Frisch discovered that the ext4 file system implementation in the Linux kernel contained an integer overflow when handling metadata inode extents. An attacker could use this to construct a malicious ext4 file system image that, when mounted, could cause a denial of service (system crash). (CVE-2021-3428) 马哲宇 discovered that the IEEE 1394 (Firewire) nosy packet sniffer driver in the Linux kernel did not properly perform reference counting in some situations, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-3483)

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/linux-image-4.15.0-1072-oracle<4.15.0-1072.80
4.15.0-1072.80
=18.04
All of
ubuntu/linux-image-4.15.0-1086-raspi2<4.15.0-1086.91
4.15.0-1086.91
=18.04
All of
ubuntu/linux-image-4.15.0-1092-kvm<4.15.0-1092.94
4.15.0-1092.94
=18.04
All of
ubuntu/linux-image-4.15.0-1100-gcp<4.15.0-1100.113
4.15.0-1100.113
=18.04
All of
ubuntu/linux-image-4.15.0-1103-aws<4.15.0-1103.110
4.15.0-1103.110
=18.04
All of
ubuntu/linux-image-4.15.0-1103-snapdragon<4.15.0-1103.112
4.15.0-1103.112
=18.04
All of
ubuntu/linux-image-4.15.0-1115-azure<4.15.0-1115.128
4.15.0-1115.128
=18.04
All of
ubuntu/linux-image-4.15.0-144-generic<4.15.0-144.148
4.15.0-144.148
=18.04
All of
ubuntu/linux-image-4.15.0-144-generic-lpae<4.15.0-144.148
4.15.0-144.148
=18.04
All of
ubuntu/linux-image-4.15.0-144-lowlatency<4.15.0-144.148
4.15.0-144.148
=18.04
All of
ubuntu/linux-image-aws-lts-18.04<4.15.0.1103.106
4.15.0.1103.106
=18.04
All of
ubuntu/linux-image-azure-lts-18.04<4.15.0.1115.88
4.15.0.1115.88
=18.04
All of
ubuntu/linux-image-gcp-lts-18.04<4.15.0.1100.118
4.15.0.1100.118
=18.04
All of
ubuntu/linux-image-generic<4.15.0.144.131
4.15.0.144.131
=18.04
All of
ubuntu/linux-image-generic-lpae<4.15.0.144.131
4.15.0.144.131
=18.04
All of
ubuntu/linux-image-kvm<4.15.0.1092.88
4.15.0.1092.88
=18.04
All of
ubuntu/linux-image-lowlatency<4.15.0.144.131
4.15.0.144.131
=18.04
All of
ubuntu/linux-image-oracle-lts-18.04<4.15.0.1072.82
4.15.0.1072.82
=18.04
All of
ubuntu/linux-image-raspi2<4.15.0.1086.83
4.15.0.1086.83
=18.04
All of
ubuntu/linux-image-snapdragon<4.15.0.1103.106
4.15.0.1103.106
=18.04
All of
ubuntu/linux-image-virtual<4.15.0.144.131
4.15.0.144.131
=18.04
All of
ubuntu/linux-image-4.15.0-1072-oracle<4.15.0-1072.80~16.04.1
4.15.0-1072.80~16.04.1
=16.04
All of
ubuntu/linux-image-4.15.0-1100-gcp<4.15.0-1100.113~16.04.1
4.15.0-1100.113~16.04.1
=16.04
All of
ubuntu/linux-image-4.15.0-1103-aws<4.15.0-1103.110~16.04.1
4.15.0-1103.110~16.04.1
=16.04
All of
ubuntu/linux-image-4.15.0-1115-azure<4.15.0-1115.128~16.04.1
4.15.0-1115.128~16.04.1
=16.04
All of
ubuntu/linux-image-4.15.0-144-generic<4.15.0-144.148~16.04.1
4.15.0-144.148~16.04.1
=16.04
All of
ubuntu/linux-image-4.15.0-144-lowlatency<4.15.0-144.148~16.04.1
4.15.0-144.148~16.04.1
=16.04
All of
ubuntu/linux-image-aws-hwe<4.15.0.1103.94
4.15.0.1103.94
=16.04
All of
ubuntu/linux-image-azure<4.15.0.1115.106
4.15.0.1115.106
=16.04
All of
ubuntu/linux-image-gcp<4.15.0.1100.101
4.15.0.1100.101
=16.04
All of
ubuntu/linux-image-generic-hwe-16.04<4.15.0.144.140
4.15.0.144.140
=16.04
All of
ubuntu/linux-image-gke<4.15.0.1100.101
4.15.0.1100.101
=16.04
All of
ubuntu/linux-image-lowlatency-hwe-16.04<4.15.0.144.140
4.15.0.144.140
=16.04
All of
ubuntu/linux-image-oem<4.15.0.144.140
4.15.0.144.140
=16.04
All of
ubuntu/linux-image-oracle<4.15.0.1072.60
4.15.0.1072.60
=16.04
All of
ubuntu/linux-image-virtual-hwe-16.04<4.15.0.144.140
4.15.0.144.140
=16.04
All of
ubuntu/linux-image-4.15.0-1115-azure<4.15.0-1115.128~14.04.1
4.15.0-1115.128~14.04.1
=14.04
All of
ubuntu/linux-image-azure<4.15.0.1115.88
4.15.0.1115.88
=14.04

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