CVE-2025-52565 (GCVE-0-2025-52565)
Vulnerability from cvelistv5
Published
2025-11-06 20:02
Modified
2025-11-06 21:32
Severity ?
8.4 (High) - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:H/SI:H/SA:H
CWE
  • CWE-61 - UNIX Symbolic Link (Symlink) Following
  • CWE-363 - Race Condition Enabling Link Following
Summary
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.
References
Impacted products
Vendor Product Version
opencontainers runc Version: >= 1.0.0-rc3, < 1.2.8
Version: >= 1.3.0-rc.1, < 1.3.3
Version: >= 1.4.0-rc.1, < 1.4.0-rc.3
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