CVE-2025-38177
Published Jul 4, 2025
Last updated 10 days ago
- Description
- In the Linux kernel, the following vulnerability has been resolved: sch_hfsc: make hfsc_qlen_notify() idempotent hfsc_qlen_notify() is not idempotent either and not friendly to its callers, like fq_codel_dequeue(). Let's make it idempotent to ease qdisc_tree_reduce_backlog() callers' life: 1. update_vf() decreases cl->cl_nactive, so we can check whether it is non-zero before calling it. 2. eltree_remove() always removes RB node cl->el_node, but we can use RB_EMPTY_NODE() + RB_CLEAR_NODE() to make it safe.
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- NVD status
- Awaiting Analysis
- Hype score
- Not currently trending
(CVE-2025-38177)[sch_hfsc]hfsc_qlen_notify() is not idempotent either and not friendly to its callers, like fq_codel_dequeue() https://t.co/auSs5NMxWv Exploited in kernelCTF(as 1-day) https://t.co/KzLUOHH9JP Reported by Gerrard Tai(@gerrard_tai) https://t.co/LTEbmX5T1T
@xvonfers
5 Jul 2025
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CVE-2025-38177 Linux Kernel HFSC Qdisc Vulnerability https://t.co/ZnFKX295Bo
@VulmonFeeds
4 Jul 2025
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