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ubuntucveUbuntu.comUB:CVE-2023-45898
HistoryOct 16, 2023 - 12:00 a.m.

CVE-2023-45898

2023-10-1600:00:00
ubuntu.com
ubuntu.com
12
linux kernel
use-after-free
ext4
bugzilla
vulnerability
usn-6536-1
usn-6573-1

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

7.4 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

The Linux kernel before 6.5.4 has an es1 use-after-free in
fs/ext4/extents_status.c, related to ext4_es_insert_extent.

Bugs

Notes

Author Note
rodrigo-zaiden first publication of USN-6536-1 wrongly announced that linux-azure on mantic fixed this issue in version 6.5.0-1009.9. It was fixed with USN-6573-1.
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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

7.4 High

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%