CVE-2025-38193— net_sched: sch_sfq: reject invalid perturb period
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I. Basic Information for CVE-2025-38193
Vulnerability Information
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Vulnerability Title
net_sched: sch_sfq: reject invalid perturb period
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net_sched: sch_sfq: reject invalid perturb period Gerrard Tai reported that SFQ perturb_period has no range check yet, and this can be used to trigger a race condition fixed in a separate patch. We want to make sure ctl->perturb_period * HZ will not overflow and is positive. tc qd add dev lo root sfq perturb -10 # negative value : error Error: sch_sfq: invalid perturb period. tc qd add dev lo root sfq perturb 1000000000 # too big : error Error: sch_sfq: invalid perturb period. tc qd add dev lo root sfq perturb 2000000 # acceptable value tc -s -d qd sh dev lo qdisc sfq 8005: root refcnt 2 limit 127p quantum 64Kb depth 127 flows 128 divisor 1024 perturb 2000000sec Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0) backlog 0b 0p requeues 0
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，该漏洞源于未验证扰动周期导致整数溢出。
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-2025-38193
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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-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2025-38193
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