USN-4999-1: Linux kernel vulnerabilities
First published: Wed Jun 23 2021(Updated: )
Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulnerabilities. A local attacker could use this issue to execute arbitrary code. (CVE-2021-3609) Piotr Krysiuk discovered that the eBPF implementation in the Linux kernel did not properly enforce limits for pointer operations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-33200) Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation did not properly clear received fragments from memory in some situations. A physically proximate attacker could possibly use this issue to inject packets or expose sensitive information. (CVE-2020-24586) Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation incorrectly handled encrypted fragments. A physically proximate attacker could possibly use this issue to decrypt fragments. (CVE-2020-24587) Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation incorrectly handled certain malformed frames. If a user were tricked into connecting to a malicious server, a physically proximate attacker could use this issue to inject packets. (CVE-2020-24588) 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) Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation incorrectly handled EAPOL frames from unauthenticated senders. A physically proximate attacker could inject malicious packets to cause a denial of service (system crash). (CVE-2020-26139) Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation did not properly verify certain fragmented frames. A physically proximate attacker could possibly use this issue to inject or decrypt packets. (CVE-2020-26141) Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation accepted plaintext fragments in certain situations. A physically proximate attacker could use this issue to inject packets. (CVE-2020-26145) Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation could reassemble mixed encrypted and plaintext fragments. A physically proximate attacker could possibly use this issue to inject packets or exfiltrate selected fragments. (CVE-2020-26147) Or Cohen discovered that the SCTP implementation in the Linux kernel contained a race condition in some situations, leading to a use-after-free condition. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-23133) Piotr Krysiuk and Benedict Schlueter discovered that the eBPF implementation in the Linux kernel performed out of bounds speculation on pointer arithmetic. A local attacker could use this to expose sensitive information. (CVE-2021-29155) Manfred Paul discovered that the extended Berkeley Packet Filter (eBPF) implementation in the Linux kernel contained an out-of-bounds vulnerability. A local attacker could use this issue to execute arbitrary code. (CVE-2021-31440) Piotr Krysiuk discovered that the eBPF implementation in the Linux kernel did not properly prevent speculative loads in certain situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-31829)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/linux-image-5.8.0-59-lowlatency | <5.8.0-59.66 | 5.8.0-59.66 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-1029-raspi | <5.8.0-1029.32 | 5.8.0-1029.32 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-1038-aws | <5.8.0-1038.40 | 5.8.0-1038.40 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-oracle | <5.8.0.1033.32 | 5.8.0.1033.32 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-azure | <5.8.0.1036.36 | 5.8.0.1036.36 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-raspi-nolpae | <5.8.0.1029.31 | 5.8.0.1029.31 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-59-generic-64k | <5.8.0-59.66 | 5.8.0-59.66 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-59-generic-lpae | <5.8.0-59.66 | 5.8.0-59.66 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-virtual | <5.8.0.59.64 | 5.8.0.59.64 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-raspi | <5.8.0.1029.31 | 5.8.0.1029.31 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-gke | <5.8.0.1035.35 | 5.8.0.1035.35 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-generic-64k | <5.8.0.59.64 | 5.8.0.59.64 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-generic | <5.8.0.59.64 | 5.8.0.59.64 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-1036-azure | <5.8.0-1036.38 | 5.8.0-1036.38 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-1033-oracle | <5.8.0-1033.34 | 5.8.0-1033.34 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-aws | <5.8.0.1038.40 | 5.8.0.1038.40 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-kvm | <5.8.0.1030.32 | 5.8.0.1030.32 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-1030-kvm | <5.8.0-1030.32 | 5.8.0-1030.32 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-generic-lpae | <5.8.0.59.64 | 5.8.0.59.64 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-gcp | <5.8.0.1035.35 | 5.8.0.1035.35 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-1029-raspi-nolpae | <5.8.0-1029.32 | 5.8.0-1029.32 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-1035-gcp | <5.8.0-1035.37 | 5.8.0-1035.37 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-59-generic | <5.8.0-59.66 | 5.8.0-59.66 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-lowlatency | <5.8.0.59.64 | 5.8.0.59.64 |
| =20.10 | ||
| All of | ||
| ubuntu/linux-image-virtual-hwe-20.04 | <5.8.0.59.66~20.04.42 | 5.8.0.59.66~20.04.42 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-59-generic-64k | <5.8.0-59.66~20.04.1 | 5.8.0-59.66~20.04.1 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-59-lowlatency | <5.8.0-59.66~20.04.1 | 5.8.0-59.66~20.04.1 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-generic-lpae-hwe-20.04 | <5.8.0.59.66~20.04.42 | 5.8.0.59.66~20.04.42 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-59-generic | <5.8.0-59.66~20.04.1 | 5.8.0-59.66~20.04.1 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-gcp | <5.8.0.1035.37~20.04.9 | 5.8.0.1035.37~20.04.9 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-generic-64k-hwe-20.04 | <5.8.0.59.66~20.04.42 | 5.8.0.59.66~20.04.42 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-1036-azure | <5.8.0-1036.38~20.04.1 | 5.8.0-1036.38~20.04.1 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-1033-oracle | <5.8.0-1033.34~20.04.1 | 5.8.0-1033.34~20.04.1 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-lowlatency-hwe-20.04 | <5.8.0.59.66~20.04.42 | 5.8.0.59.66~20.04.42 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-1035-gcp | <5.8.0-1035.37~20.04.1 | 5.8.0-1035.37~20.04.1 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-aws | <5.8.0.1038.40~20.04.11 | 5.8.0.1038.40~20.04.11 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-generic-hwe-20.04 | <5.8.0.59.66~20.04.42 | 5.8.0.59.66~20.04.42 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-1038-aws | <5.8.0-1038.40~20.04.1 | 5.8.0-1038.40~20.04.1 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-5.8.0-59-generic-lpae | <5.8.0-59.66~20.04.1 | 5.8.0-59.66~20.04.1 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-oracle | <5.8.0.1033.34~20.04.9 | 5.8.0.1033.34~20.04.9 |
| =20.04 | ||
| All of | ||
| ubuntu/linux-image-azure | <5.8.0.1036.38~20.04.8 | 5.8.0.1036.38~20.04.8 |
| =20.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2021-31440
- https://ubuntu.com/security/CVE-2020-25670
- https://ubuntu.com/security/CVE-2020-26141
- https://ubuntu.com/security/CVE-2021-3609
- https://ubuntu.com/security/CVE-2020-25672
- https://ubuntu.com/security/CVE-2020-26145
- https://ubuntu.com/security/CVE-2020-24586
- https://ubuntu.com/security/CVE-2020-25671
- https://ubuntu.com/security/CVE-2020-26147
- https://ubuntu.com/security/CVE-2021-23133
- https://ubuntu.com/security/CVE-2020-24587
- https://ubuntu.com/security/CVE-2020-26139
- https://ubuntu.com/security/CVE-2021-31829
- https://ubuntu.com/security/CVE-2021-33200
- https://ubuntu.com/security/CVE-2020-25673
- https://ubuntu.com/security/CVE-2021-29155
- https://ubuntu.com/security/CVE-2020-24588
- https://ubuntu.com/security/notices/USN-4997-1
- https://ubuntu.com/security/notices/USN-5001-1
- https://ubuntu.com/security/notices/USN-4997-2
- https://ubuntu.com/security/notices/USN-4948-1
- https://ubuntu.com/security/notices/USN-4977-1
- https://ubuntu.com/security/notices/USN-4979-1
- https://ubuntu.com/security/notices/USN-4982-1
- https://ubuntu.com/security/notices/USN-5343-1
- https://ubuntu.com/security/notices/USN-5000-1
- https://ubuntu.com/security/notices/USN-5000-2
- https://ubuntu.com/security/notices/USN-5361-1
- https://ubuntu.com/security/notices/USN-5002-1
- https://ubuntu.com/security/notices/USN-5003-1
- https://ubuntu.com/security/notices/LSN-0078-1
- https://ubuntu.com/security/notices/USN-5082-1
- https://ubuntu.com/security/notices/USN-5505-1
- https://ubuntu.com/security/notices/USN-5513-1
- https://ubuntu.com/security/notices/USN-5018-1
- https://ubuntu.com/security/notices/USN-5299-1
- https://ubuntu.com/security/notices/USN-4983-1
- https://launchpad.net/ubuntu/+source/linux-signed/5.8.0-59.66
- https://launchpad.net/ubuntu/+source/linux-raspi/5.8.0-1029.32
- https://launchpad.net/ubuntu/+source/linux-aws/5.8.0-1038.40
- https://launchpad.net/ubuntu/+source/linux-meta-oracle/5.8.0.1033.32
- https://launchpad.net/ubuntu/+source/linux-meta-azure/5.8.0.1036.36
- https://launchpad.net/ubuntu/+source/linux-meta-raspi/5.8.0.1029.31
- https://launchpad.net/ubuntu/+source/linux/5.8.0-59.66
- https://launchpad.net/ubuntu/+source/linux-meta/5.8.0.59.64
- https://launchpad.net/ubuntu/+source/linux-meta-gcp/5.8.0.1035.35
- https://launchpad.net/ubuntu/+source/linux-signed-azure/5.8.0-1036.38
- https://launchpad.net/ubuntu/+source/linux-signed-oracle/5.8.0-1033.34
- https://launchpad.net/ubuntu/+source/linux-meta-aws/5.8.0.1038.40
- https://launchpad.net/ubuntu/+source/linux-meta-kvm/5.8.0.1030.32
- https://launchpad.net/ubuntu/+source/linux-signed-kvm/5.8.0-1030.32
- https://launchpad.net/ubuntu/+source/linux-signed-gcp/5.8.0-1035.37
- https://launchpad.net/ubuntu/+source/linux-meta-hwe-5.8/5.8.0.59.66~20.04.42
- https://launchpad.net/ubuntu/+source/linux-signed-hwe-5.8/5.8.0-59.66~20.04.1
- https://launchpad.net/ubuntu/+source/linux-meta-gcp-5.8/5.8.0.1035.37~20.04.9
- https://launchpad.net/ubuntu/+source/linux-signed-azure-5.8/5.8.0-1036.38~20.04.1
- https://launchpad.net/ubuntu/+source/linux-signed-oracle-5.8/5.8.0-1033.34~20.04.1
- https://launchpad.net/ubuntu/+source/linux-signed-gcp-5.8/5.8.0-1035.37~20.04.1
- https://launchpad.net/ubuntu/+source/linux-meta-aws-5.8/5.8.0.1038.40~20.04.11
- https://launchpad.net/ubuntu/+source/linux-aws-5.8/5.8.0-1038.40~20.04.1
- https://launchpad.net/ubuntu/+source/linux-hwe-5.8/5.8.0-59.66~20.04.1
- https://launchpad.net/ubuntu/+source/linux-meta-oracle-5.8/5.8.0.1033.34~20.04.9
- https://launchpad.net/ubuntu/+source/linux-meta-azure-5.8/5.8.0.1036.38~20.04.8
- https://ubuntu.com/security/notices/USN-4999-1 (Advisory)
Child vulnerabilities
(Contains the following vulnerabilities)
- agent/weakness
- agent/references
- agent/severity
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- agent/softwarecombine
- collector/usn
- source/Ubuntu
- anchor-related/USN-4997-1
- anchor-related/USN-5001-1
- anchor-related/USN-4997-2
- anchor-related/USN-4948-1
- anchor-related/USN-4977-1
- anchor-related/USN-4979-1
- anchor-related/USN-4982-1
- anchor-related/USN-5343-1
- anchor-related/USN-5000-1
- anchor-related/USN-5000-2
- anchor-related/USN-5361-1
- anchor-related/USN-5002-1
- anchor-related/USN-5003-1
- anchor-related/USN-5082-1
- anchor-related/USN-5505-1
- anchor-related/USN-5513-1
- anchor-related/USN-5018-1
- anchor-related/USN-5299-1
- anchor-related/USN-4983-1
- agent/software-canonical-lookup
- agent/description
- agent/event
- agent/title
- agent/tags
- agent/trending
- package-manager/ubuntu
- vendor/ubuntu
- canonical/ubuntu ubuntu
- version/ubuntu ubuntu/20.10
- version/ubuntu ubuntu/20.04