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ubuntucveUbuntu.comUB:CVE-2023-31436
HistoryApr 28, 2023 - 12:00 a.m.

CVE-2023-31436

2023-04-2800:00:00
ubuntu.com
ubuntu.com
23
linux kernel
vulnerability
qfq_change_class
out-of-bounds write
qfq_min_lmax

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

0.0004 Low

EPSS

Percentile

16.1%

JSON

qfq_change_class in net/sched/sch_qfq.c in the Linux kernel before 6.2.13
allows an out-of-bounds write because lmax can exceed QFQ_MIN_LMAX.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-212.223UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-150.167UNKNOWN
ubuntu22.04noarchlinux< 5.15.0-73.80UNKNOWN
ubuntu22.10noarchlinux< 5.19.0-43.44UNKNOWN
ubuntu23.04noarchlinux< 6.2.0-23.23UNKNOWN
ubuntu14.04noarchlinux< 3.13.0-194.245UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-241.275UNKNOWN
ubuntu22.04noarchlinux-allwinner-5.19< 5.19.0-1013.13~22.04.1UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1157.170UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1103.111UNKNOWN
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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

0.0004 Low

EPSS

Percentile

16.1%

JSON
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