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CVE-2026-23105— net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag

CVSS 7.8 · High EPSS 0.02% · P5
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I. Basic Information for CVE-2026-23105

Vulnerability Information
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Vulnerability Title
net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag This is more of a preventive patch to make the code more consistent and to prevent possible exploits that employ child qlen manipulations on qfq. use cl_is_active instead of relying on the child qdisc's qlen to determine class activation.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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qfq调度器依赖子队列长度判断激活状态，可能导致类激活状态判断错误。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 462dbc9101acd38e92eda93c0726857517a24bbd ~ fac2c67bb2bb732eae4283e45fc338af7e08c254 -
LinuxLinux 3.8 -

II. Public POCs for CVE-2026-23105

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III. Intelligence Information for CVE-2026-23105

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Same Patch Batch · Linux · 2026-02-04 · 79 CVEs total

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CVE-2026-230777.8 HIGHmm/vma: fix anon_vma UAF on mremap() faulted, unfaulted merge
CVE-2026-230747.8 HIGHnet/sched: Enforce that teql can only be used as root qdisc
CVE-2026-231037.8 HIGHipvlan: Make the addrs_lock be per port
CVE-2026-230667.8 HIGHrxrpc: Fix recvmsg() unconditional requeue
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CVE-2026-23067iommu/io-pgtable-arm: fix size_t signedness bug in unmap path
CVE-2026-23065platform/x86/amd: Fix memory leak in wbrf_record()
CVE-2026-23062platform/x86: hp-bioscfg: Fix kernel panic in GET_INSTANCE_ID macro
CVE-2026-23064net/sched: act_ife: avoid possible NULL deref
CVE-2026-23061can: kvaser_usb: kvaser_usb_read_bulk_callback(): fix URB memory leak
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CVE-2026-23057vsock/virtio: Coalesce only linear skb
CVE-2026-23056uacce: implement mremap in uacce_vm_ops to return -EPERM
CVE-2025-71199iio: adc: at91-sama5d2_adc: Fix potential use-after-free in sama5d2_adc driver
CVE-2025-71198iio: imu: st_lsm6dsx: fix iio_chan_spec for sensors without event detection
CVE-2025-71197w1: therm: Fix off-by-one buffer overflow in alarms_store
CVE-2026-23055i2c: riic: Move suspend handling to NOIRQ phase
CVE-2026-23063uacce: ensure safe queue release with state management
CVE-2026-23053NFS: Fix a deadlock involving nfs_release_folio()

Showing top 20 of 79 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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