Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2022-20141: In ip_check_mc_rcu of igmp.c, there is a possible use after free due to improper locking. This could lead to local escalation of privilege when opening and closing inet sockets with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-112551163References: Upstream kernel CVE-2021-40490: A flaw was found in the Linux kernel. A race condition was discovered in the ext4 subsystem. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. CVE-2021-3655: A vulnerability was found in the Linux kernel. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory. CVE-2020-16119: A flaw was found in the Linux kernel. When reusing a socket with an attached dccps_hc_tx_ccid as a listener, the socket will be used after being released leading to denial of service (DoS) or a potential code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Fixed packages 14
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | kernel | 0:4.14.248-189.473.amzn2 |
| Amazon Linux · 2 | kernel-debuginfo | 0:4.14.248-189.473.amzn2 |
| Amazon Linux · 2 | kernel-debuginfo-common-aarch64 | 0:4.14.248-189.473.amzn2 |
| Amazon Linux · 2 | kernel-debuginfo-common-x86_64 | 0:4.14.248-189.473.amzn2 |
| Amazon Linux · 2 | kernel-devel | 0:4.14.248-189.473.amzn2 |
| Amazon Linux · 2 | kernel-headers | 0:4.14.248-189.473.amzn2 |
| Amazon Linux · 2 | kernel-livepatch-4.14.248-189.473 | 0:1.0-0.amzn2 |
| Amazon Linux · 2 | kernel-tools | 0:4.14.248-189.473.amzn2 |
| Amazon Linux · 2 | kernel-tools-debuginfo | 0:4.14.248-189.473.amzn2 |
| Amazon Linux · 2 | kernel-tools-devel | 0:4.14.248-189.473.amzn2 |
| Amazon Linux · 2 | perf | 0:4.14.248-189.473.amzn2 |
| Amazon Linux · 2 | perf-debuginfo | 0:4.14.248-189.473.amzn2 |
| Amazon Linux · 2 | python-perf | 0:4.14.248-189.473.amzn2 |
| Amazon Linux · 2 | python-perf-debuginfo | 0:4.14.248-189.473.amzn2 |
Vulnerabilities 4
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Medium 6.3
DCCP CCID structure use-after-free
Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, …
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Unscored —
A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP …
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Unscored —
A race condition was discovered in ext4_write_inline_data_end in fs/ext4/inline.c in the ext4 subsystem in the Linux ke…
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Unscored —
In ip_check_mc_rcu of igmp.c, there is a possible use after free due to improper locking. This could lead to local esca…