CVE-2025-21745
blk-cgroup: Fix class @block_class's subsystem refcount leakage
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Feb 27, 2025 |
| Last Updated | May 12, 2026 |
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Affected Versions
Linux / Linux
ef45fe470e1e5410db4af87abc5d5055427945ac < ffb494f1e7a047bd7a41b13796fcfb08fe5beafb ef45fe470e1e5410db4af87abc5d5055427945ac < 38287f779b34dfe959b4b681e909f2d3d52b88be ef45fe470e1e5410db4af87abc5d5055427945ac < 431b6ef2714be4d5babb802114987541a88b43b0 ef45fe470e1e5410db4af87abc5d5055427945ac < 993121481b5a87829f1e8163f47158b72679f309 ef45fe470e1e5410db4af87abc5d5055427945ac < 2ce09aabe009453d641a2ceb79e6461a2d4f3876 ef45fe470e1e5410db4af87abc5d5055427945ac < 67c7f213e052b1aa6caba4a7e25e303bc6997126 ef45fe470e1e5410db4af87abc5d5055427945ac < d1248436cbef1f924c04255367ff4845ccd9025e
Linux / Linux
5.9
References
git.kernel.org: https://git.kernel.org/stable/c/ffb494f1e7a047bd7a41b13796fcfb08fe5beafb git.kernel.org: https://git.kernel.org/stable/c/38287f779b34dfe959b4b681e909f2d3d52b88be git.kernel.org: https://git.kernel.org/stable/c/431b6ef2714be4d5babb802114987541a88b43b0 git.kernel.org: https://git.kernel.org/stable/c/993121481b5a87829f1e8163f47158b72679f309 git.kernel.org: https://git.kernel.org/stable/c/2ce09aabe009453d641a2ceb79e6461a2d4f3876 git.kernel.org: https://git.kernel.org/stable/c/67c7f213e052b1aa6caba4a7e25e303bc6997126 git.kernel.org: https://git.kernel.org/stable/c/d1248436cbef1f924c04255367ff4845ccd9025e lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html cert-portal.siemens.com: https://cert-portal.siemens.com/productcert/html/ssa-265688.html cert-portal.siemens.com: https://cert-portal.siemens.com/productcert/html/ssa-082556.html