GHSA-hfgc-7c7c-g6r6MediumCVSS 5.5
In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: Fix class ...
🔗 CVE IDs covered (1)
📋 Description
In the Linux kernel, the following vulnerability has been resolved:
blk-cgroup: Fix class @block_class's subsystem refcount leakage
blkcg_fill_root_iostats() iterates over @block_class's devices by class_dev_iter_(init|next)(), but does not end iterating with class_dev_iter_exit(), so causes the class's subsystem refcount leakage.
Fix by ending the iterating with class_dev_iter_exit().
🔗 References (14)
- https://nvd.nist.gov/vuln/detail/CVE-2025-21745
- https://git.kernel.org/stable/c/2ce09aabe009453d641a2ceb79e6461a2d4f3876
- https://git.kernel.org/stable/c/431b6ef2714be4d5babb802114987541a88b43b0
- https://git.kernel.org/stable/c/67c7f213e052b1aa6caba4a7e25e303bc6997126
- https://git.kernel.org/stable/c/993121481b5a87829f1e8163f47158b72679f309
- https://git.kernel.org/stable/c/d1248436cbef1f924c04255367ff4845ccd9025e
- https://git.kernel.org/stable/c/38287f779b34dfe959b4b681e909f2d3d52b88be
- https://git.kernel.org/stable/c/ffb494f1e7a047bd7a41b13796fcfb08fe5beafb
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://github.com/advisories/GHSA-hfgc-7c7c-g6r6