Vulnerability Details CVE-2025-52565
runc is a CLI tool for spawning and running containers according to the OCI specification. Versions 1.0.0-rc3 through 1.2.7, 1.3.0-rc.1 through 1.3.2, and 1.4.0-rc.1 through 1.4.0-rc.2, due to insufficient checks when bind-mounting `/dev/pts/$n` to `/dev/console` inside the container, an attacker can trick runc into bind-mounting paths which would normally be made read-only or be masked onto a path that the attacker can write to. This attack is very similar in concept and application to CVE-2025-31133, except that it attacks a similar vulnerability in a different target (namely, the bind-mount of `/dev/pts/$n` to `/dev/console` as configured for all containers that allocate a console). This happens after `pivot_root(2)`, so this cannot be used to write to host files directly -- however, as with CVE-2025-31133, this can load to denial of service of the host or a container breakout by providing the attacker with a writable copy of `/proc/sysrq-trigger` or `/proc/sys/kernel/core_pattern` (respectively). This issue is fixed in versions 1.2.8, 1.3.3 and 1.4.0-rc.3.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 2.5%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2025-52565
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cpe:2.3:a:linuxfoundation:runc:1.0.0
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cpe:2.3:a:linuxfoundation:runc:1.0.1
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cpe:2.3:a:linuxfoundation:runc:1.0.2
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cpe:2.3:a:linuxfoundation:runc:1.0.3
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cpe:2.3:a:linuxfoundation:runc:1.1.0
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cpe:2.3:a:linuxfoundation:runc:1.1.1
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cpe:2.3:a:linuxfoundation:runc:1.1.10
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cpe:2.3:a:linuxfoundation:runc:1.1.11
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cpe:2.3:a:linuxfoundation:runc:1.1.12
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cpe:2.3:a:linuxfoundation:runc:1.1.13
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cpe:2.3:a:linuxfoundation:runc:1.1.14
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cpe:2.3:a:linuxfoundation:runc:1.1.15
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cpe:2.3:a:linuxfoundation:runc:1.1.2
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cpe:2.3:a:linuxfoundation:runc:1.1.3
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cpe:2.3:a:linuxfoundation:runc:1.1.4
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cpe:2.3:a:linuxfoundation:runc:1.1.5
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cpe:2.3:a:linuxfoundation:runc:1.1.6
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cpe:2.3:a:linuxfoundation:runc:1.1.7
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cpe:2.3:a:linuxfoundation:runc:1.1.8
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cpe:2.3:a:linuxfoundation:runc:1.1.9
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cpe:2.3:a:linuxfoundation:runc:1.2.0
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cpe:2.3:a:linuxfoundation:runc:1.2.1
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cpe:2.3:a:linuxfoundation:runc:1.2.2
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cpe:2.3:a:linuxfoundation:runc:1.2.3
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cpe:2.3:a:linuxfoundation:runc:1.2.4
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cpe:2.3:a:linuxfoundation:runc:1.2.5
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cpe:2.3:a:linuxfoundation:runc:1.2.6
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cpe:2.3:a:linuxfoundation:runc:1.2.7
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cpe:2.3:a:linuxfoundation:runc:1.3.0
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cpe:2.3:a:linuxfoundation:runc:1.3.1
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cpe:2.3:a:linuxfoundation:runc:1.3.2
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cpe:2.3:a:linuxfoundation:runc:1.4.0