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amazonAmazonALAS2-2020-1399
HistoryMar 02, 2020 - 11:44 p.m.

Important: kernel

2020-03-0223:44:00
alas.aws.amazon.com
27

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

6.3 Medium

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.0004 Low

EPSS

Percentile

12.6%

Issue Overview:

In the Linux kernel before 5.1, there is a memory leak in __feat_register_sp() in net/dccp/feat.c, which may cause denial of service, aka CID-1d3ff0950e2b. (CVE-2019-20096)

An issue was discovered in the Linux kernel before 5.0.10. SMB2_negotiate in fs/cifs/smb2pdu.c has an out-of-bounds read because data structures are incompletely updated after a change from smb30 to smb21. (CVE-2019-15918)

Affected Packages:

kernel

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

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

New Packages:

aarch64:  
    kernel-4.14.171-136.231.amzn2.aarch64  
    kernel-headers-4.14.171-136.231.amzn2.aarch64  
    kernel-debuginfo-common-aarch64-4.14.171-136.231.amzn2.aarch64  
    perf-4.14.171-136.231.amzn2.aarch64  
    perf-debuginfo-4.14.171-136.231.amzn2.aarch64  
    python-perf-4.14.171-136.231.amzn2.aarch64  
    python-perf-debuginfo-4.14.171-136.231.amzn2.aarch64  
    kernel-tools-4.14.171-136.231.amzn2.aarch64  
    kernel-tools-devel-4.14.171-136.231.amzn2.aarch64  
    kernel-tools-debuginfo-4.14.171-136.231.amzn2.aarch64  
    kernel-devel-4.14.171-136.231.amzn2.aarch64  
    kernel-debuginfo-4.14.171-136.231.amzn2.aarch64  
  
i686:  
    kernel-headers-4.14.171-136.231.amzn2.i686  
  
src:  
    kernel-4.14.171-136.231.amzn2.src  
  
x86_64:  
    kernel-4.14.171-136.231.amzn2.x86_64  
    kernel-headers-4.14.171-136.231.amzn2.x86_64  
    kernel-debuginfo-common-x86_64-4.14.171-136.231.amzn2.x86_64  
    perf-4.14.171-136.231.amzn2.x86_64  
    perf-debuginfo-4.14.171-136.231.amzn2.x86_64  
    python-perf-4.14.171-136.231.amzn2.x86_64  
    python-perf-debuginfo-4.14.171-136.231.amzn2.x86_64  
    kernel-tools-4.14.171-136.231.amzn2.x86_64  
    kernel-tools-devel-4.14.171-136.231.amzn2.x86_64  
    kernel-tools-debuginfo-4.14.171-136.231.amzn2.x86_64  
    kernel-devel-4.14.171-136.231.amzn2.x86_64  
    kernel-debuginfo-4.14.171-136.231.amzn2.x86_64  
    kernel-livepatch-4.14.171-136.231-1.0-0.amzn2.x86_64  

Additional References

Red Hat: CVE-2019-15918, CVE-2019-20096

Mitre: CVE-2019-15918, CVE-2019-20096

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

6.3 Medium

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.0004 Low

EPSS

Percentile

12.6%

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