PT-2023-4316 · Linux+7 · Linux Kernel+7
Kevin Rich
·
Publicado
2023-07-20
·
Atualizado
2025-03-20
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CVE-2023-3777
CVSS v3.1
7.8
Alta
| Vetor | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A use-after-free vulnerability in the Linux kernel's netfilter: nf tables component can be exploited to achieve local privilege escalation. When
nf tables delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances.Recommendations
Upgrade past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8 to resolve the issue. As a temporary workaround, consider restricting access to the
nf tables delrule() function until a patch is available.Exploit
Correção
DoS
LPE
Use After Free
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Identificadores relacionados
Produtos afetados
Alt Linux
Astra Linux
Linuxmint
Linux Kernel
Red Hat
Red Os
Suse
Ubuntu