CVE-2025-38637— net_sched: skbprio: Remove overly strict queue assertions
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I. Basic Information for CVE-2025-38637
Vulnerability Information
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Vulnerability Title
net_sched: skbprio: Remove overly strict queue assertions
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net_sched: skbprio: Remove overly strict queue assertions In the current implementation, skbprio enqueue/dequeue contains an assertion that fails under certain conditions when SKBPRIO is used as a child qdisc under TBF with specific parameters. The failure occurs because TBF sometimes peeks at packets in the child qdisc without actually dequeuing them when tokens are unavailable. This peek operation creates a discrepancy between the parent and child qdisc queue length counters. When TBF later receives a high-priority packet, SKBPRIO's queue length may show a different value than what's reflected in its internal priority queue tracking, triggering the assertion. The fix removes this overly strict assertions in SKBPRIO, they are not necessary at all.
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skbprio队列断言过于严格，可能导致不一致状态。
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-2025-38637
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Same Patch Batch · Linux · 2025-04-18 · 23 CVEs total
| CVE-2025-39688 | nfsd: allow SC_STATUS_FREEABLE when searching via nfs4_lookup_stateid() | |
| CVE-2025-37785 | ext4: fix OOB read when checking dotdot dir | |
| CVE-2025-37860 | sfc: fix NULL dereferences in ef100_process_design_param() | |
| CVE-2025-37925 | jfs: reject on-disk inodes of an unsupported type | |
| CVE-2025-37893 | LoongArch: BPF: Fix off-by-one error in build_prologue() | |
| CVE-2025-38049 | x86/resctrl: Fix allocation of cleanest CLOSID on platforms with no monitors | |
| CVE-2025-38104 | drm/amdgpu: Replace Mutex with Spinlock for RLCG register access to avoid Priority Inversi | |
| CVE-2025-38152 | remoteproc: core: Clear table_sz when rproc_shutdown | |
| CVE-2025-38240 | drm/mediatek: dp: drm_err => dev_err in HPD path to avoid NULL ptr | |
| CVE-2025-38479 | dmaengine: fsl-edma: free irq correctly in remove path | |
| CVE-2025-38575 | ksmbd: use aead_request_free to match aead_request_alloc | |
| CVE-2025-37838 | HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Con | |
| CVE-2025-39735 | jfs: fix slab-out-of-bounds read in ea_get() | |
| CVE-2025-39728 | clk: samsung: Fix UBSAN panic in samsung_clk_init() | |
| CVE-2025-39755 | staging: gpib: Fix cb7210 pcmcia Oops | |
| CVE-2025-39778 | objtool, nvmet: Fix out-of-bounds stack access in nvmet_ctrl_state_show() | |
| CVE-2025-39930 | ASoC: simple-card-utils: Don't use __free(device_node) at graph_util_parse_dai() | |
| CVE-2025-39989 | x86/mce: use is_copy_from_user() to determine copy-from-user context | |
| CVE-2025-40014 | objtool, spi: amd: Fix out-of-bounds stack access in amd_set_spi_freq() | |
| CVE-2025-40114 | iio: light: Add check for array bounds in veml6075_read_int_time_ms |
Showing top 20 of 23 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-2025-38637
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