Threats Tagged 'ubuntu-cve-2025-37913'
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Threats Tagged 'ubuntu-cve-2025-37913'
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Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: net_sched: qfq: Fix double list add in class with netem as child qdisc As… (CVE-2025-37913)CVE-2025-37913 0 In the Linux kernel, the following vulnerability has been resolved: net_sched: qfq: Fix double list add in class with netem as child qdisc As described in Gerrard's report [1], there are use cases where a netem child qdisc will make the parent qdisc's enqueue callback reentrant. In the case of qfq, there won't be a UAF, but the code will add the same classifier to the list twice, which will cause memory corruption. This patch checks whether the class was already added to the agg->active list (cl_is_active) before doing the addition to cater for the reentrant case. [1] https://lore.kernel.org/netdev/CAHcdcOm+03OD2j6R0=YHKqmy=VgJ8xEOKuP6c7mSgnp-TEJJbw@mail.gmail.com/ Join the discussion | GCVE Database | 05/20/2025, 16:15:00 UTC Added: 07/31/2026, 16:00:50 UTC |
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