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amazonAmazonALAS-2022-1581
HistoryApr 18, 2022 - 7:46 p.m.

Important: kernel

2022-04-1819:46:00
alas.aws.amazon.com
48

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

4.6 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

26.4%

Issue Overview:

A buffer overflow flaw was found in the Linux kernel’s NFC protocol functionality. This flaw allows a local user to crash or escalate their privileges on the system. (CVE-2022-26490)

A heap buffer overflow flaw was found in IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c. This flaw allows a local attacker with a normal user privilege to overwrite kernel heap objects and may cause a local privilege escalation threat. (CVE-2022-27666)

In the Linux kernel before 5.17.1, a refcount leak bug was found in net/llc/af_llc.c. (CVE-2022-28356)

Affected Packages:

kernel

Issue Correction:
Run yum update kernel to update your system.

New Packages:

i686:  
    kernel-debuginfo-common-i686-4.14.275-142.503.amzn1.i686  
    kernel-debuginfo-4.14.275-142.503.amzn1.i686  
    kernel-headers-4.14.275-142.503.amzn1.i686  
    kernel-devel-4.14.275-142.503.amzn1.i686  
    kernel-tools-devel-4.14.275-142.503.amzn1.i686  
    kernel-tools-4.14.275-142.503.amzn1.i686  
    kernel-tools-debuginfo-4.14.275-142.503.amzn1.i686  
    kernel-4.14.275-142.503.amzn1.i686  
    perf-4.14.275-142.503.amzn1.i686  
    perf-debuginfo-4.14.275-142.503.amzn1.i686  
  
src:  
    kernel-4.14.275-142.503.amzn1.src  
  
x86_64:  
    kernel-debuginfo-common-x86_64-4.14.275-142.503.amzn1.x86_64  
    kernel-debuginfo-4.14.275-142.503.amzn1.x86_64  
    kernel-4.14.275-142.503.amzn1.x86_64  
    kernel-tools-devel-4.14.275-142.503.amzn1.x86_64  
    perf-debuginfo-4.14.275-142.503.amzn1.x86_64  
    kernel-devel-4.14.275-142.503.amzn1.x86_64  
    kernel-tools-4.14.275-142.503.amzn1.x86_64  
    kernel-headers-4.14.275-142.503.amzn1.x86_64  
    kernel-tools-debuginfo-4.14.275-142.503.amzn1.x86_64  
    perf-4.14.275-142.503.amzn1.x86_64  

Additional References

Red Hat: CVE-2022-26490, CVE-2022-27666, CVE-2022-28356

Mitre: CVE-2022-26490, CVE-2022-27666, CVE-2022-28356

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

4.6 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

26.4%