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CVE-2025-21972

Published: 2025-04-01T16:15Z
Last Modified: 2025-04-01T20:26Z
Source: MITRE CVE List
License: MITRE-CVE-TOS
In the Linux kernel, the following vulnerability has been resolved: net: mctp: unshare packets when reassembling Ensure that the frag_list used for reassembly isn't shared with other packets. This avoids incorrect reassembly when packets are cloned, and prevents a memory leak due to circular references between fragments and their skb_shared_info. The upcoming MCTP-over-USB driver uses skb_clone which can trigger the problem - other MCTP drivers don't share SKBs. A kunit test is added to reproduce the issue. > MITRE Terms of Use apply – see LICENSE‑MITRE.txt