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ubuntucveUbuntu.comUB:CVE-2020-29371
HistoryNov 28, 2020 - 12:00 a.m.

CVE-2020-29371

2020-11-2800:00:00
ubuntu.com
ubuntu.com
15

2.1 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

3.3 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

26.8%

JSON

An issue was discovered in romfs_dev_read in fs/romfs/storage.c in the
Linux kernel before 5.8.4. Uninitialized memory leaks to userspace, aka
CID-bcf85fcedfdd.

Notes

Author Note
sbeattie according to Jann Horn’s post, the sample exploit does not work at least in 20.04/focal due to heap zeroing being enabled. The concern about udisks2 is real, however.
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-121.123UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-51.56UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-193.224UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1086.91UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1028.29UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1081.85UNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1117.131UNKNOWN
ubuntu18.04noarchlinux-aws-5.4< 5.4.0-1028.29~18.04.1UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1085.90~16.04.1UNKNOWN
ubuntu20.04noarchlinux-azure< 5.4.0-1031.32UNKNOWN
Rows per page:
1-10 of 411

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2.1 Low

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

3.3 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

26.8%

JSON
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