CVE-2025-38177— sch_hfsc: make hfsc_qlen_notify() idempotent
Affected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 959466588aa7f84ccf79ae36a1d89542eaf9aaec< 9a5fd5c2f4d4afdd5e405083ee53e0789ce76956 | affected |
959466588aa7f84ccf79ae36a1d89542eaf9aaec< 72c61ffbeeb8c50f6d4d70c65d3283aa1bac57a7 | affected | ||
959466588aa7f84ccf79ae36a1d89542eaf9aaec< a5efc95a33bd4fcb879250852828cc58c7862970 | affected | ||
959466588aa7f84ccf79ae36a1d89542eaf9aaec< 0475c85426b18eccdcb7f9fb58d8f8e9c6c58c87 | affected | ||
959466588aa7f84ccf79ae36a1d89542eaf9aaec< 9030a91235ae4845ec71902c3e0cecfc9ed1f2df | affected | ||
959466588aa7f84ccf79ae36a1d89542eaf9aaec< d06476714d2819b550e0cc39222347e2c8941c9d | affected | ||
959466588aa7f84ccf79ae36a1d89542eaf9aaec< c1175c4ad01dbc9c979d099861fa90a754f72059 | affected | ||
959466588aa7f84ccf79ae36a1d89542eaf9aaec< 51eb3b65544c9efd6a1026889ee5fb5aa62da3bb | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2025-38177
Vulnerability Information
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Vulnerability Title
sch_hfsc: make hfsc_qlen_notify() idempotent
Source: NVD (National Vulnerability Database)
Vulnerability 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: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于hfsc_qlen_notify非幂等操作，可能导致资源管理问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-38177
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2025-38177 (1)
Same Patch Batch · Linux · 2025-07-04 · 59 CVEs total
| CVE-2025-38216 | iommu/vt-d: Restore context entry setup order for aliased devices | |
| CVE-2025-38229 | media: cxusb: no longer judge rbuf when the write fails | |
| CVE-2025-38231 | nfsd: Initialize ssc before laundromat_work to prevent NULL dereference | |
| CVE-2025-38230 | jfs: validate AG parameters in dbMount() to prevent crashes | |
| CVE-2025-38228 | media: imagination: fix a potential memory leak in e5010_probe() | |
| CVE-2025-38233 | powerpc64/ftrace: fix clobbered r15 during livepatching | |
| CVE-2025-38221 | ext4: fix out of bounds punch offset | |
| CVE-2025-38219 | f2fs: prevent kernel warning due to negative i_nlink from corrupted image | |
| CVE-2025-38218 | f2fs: fix to do sanity check on sit_bitmap_size | |
| CVE-2025-38217 | hwmon: (ftsteutates) Fix TOCTOU race in fts_read() | |
| CVE-2025-38220 | ext4: only dirty folios when data journaling regular files | |
| CVE-2025-38215 | fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var | |
| CVE-2025-38214 | fbdev: Fix fb_set_var to prevent null-ptr-deref in fb_videomode_to_var | |
| CVE-2025-38212 | ipc: fix to protect IPCS lookups using RCU | |
| CVE-2025-38211 | RDMA/iwcm: Fix use-after-free of work objects after cm_id destruction | |
| CVE-2025-38210 | configfs-tsm-report: Fix NULL dereference of tsm_ops | |
| CVE-2025-38209 | nvme-tcp: remove tag set when second admin queue config fails | |
| CVE-2025-38208 | smb: client: add NULL check in automount_fullpath | |
| CVE-2025-38207 | mm: fix uprobe pte be overwritten when expanding vma | |
| CVE-2025-38206 | exfat: fix double free in delayed_free |
Showing top 20 of 59 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans - CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects
Same vendor: Linux
- CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans - CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects
V. Comments for CVE-2025-38177
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