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CVE-2023-23455

Опубликовано: 01 янв. 2023
Источник: redhat
CVSS3: 4.2
EPSS Низкий

Описание

atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel through 6.1.4 allows attackers to cause a denial of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results).

A denial of service flaw was found in atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel. This issue may allow a local attacker to cause a denial of service due to type confusion. Non-negative numbers could indicate a TC_ACT_SHOT condition rather than valid classification results.

Меры по смягчению последствий

The mitigation is to disable unprivileged user namespaces by setting user.max_user_namespaces to 0:

# echo "user.max_user_namespaces=0" > /etc/sysctl.d/userns.conf # sysctl -p /etc/sysctl.d/userns.conf

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 6kernelOut of support scope
Red Hat Enterprise Linux 7kernelOut of support scope
Red Hat Enterprise Linux 7kernel-rtOut of support scope
Red Hat Enterprise Linux 9kernelNot affected
Red Hat Enterprise Linux 9kernel-rtNot affected
Red Hat Enterprise Linux 8kernel-rtFixedRHSA-2023:690114.11.2023
Red Hat Enterprise Linux 8kernelFixedRHSA-2023:707714.11.2023
Red Hat Enterprise Linux 8.6 Extended Update SupportkernelFixedRHSA-2024:072407.02.2024
Red Hat Enterprise Linux 8.8 Extended Update SupportkernelFixedRHSA-2024:057530.01.2024
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8kernelFixedRHSA-2024:072407.02.2024

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-843
https://bugzilla.redhat.com/show_bug.cgi?id=2168332Kernel: denial of service in atm_tc_enqueue in net/sched/sch_atm.c due to type confusion

EPSS

Процентиль: 2%
0.00015
Низкий

4.2 Medium

CVSS3

Связанные уязвимости

CVSS3: 5.5
ubuntu
больше 2 лет назад

atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel through 6.1.4 allows attackers to cause a denial of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results).

CVSS3: 5.5
nvd
больше 2 лет назад

atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel through 6.1.4 allows attackers to cause a denial of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results).

CVSS3: 5.5
msrc
больше 2 лет назад

Описание отсутствует

CVSS3: 5.5
debian
больше 2 лет назад

atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel through 6.1. ...

CVSS3: 5.5
github
больше 2 лет назад

atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel through 6.1.4 allows attackers to cause a denial of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results).

EPSS

Процентиль: 2%
0.00015
Низкий

4.2 Medium

CVSS3