CVE-2025-38083

Advisory lineage Upstream: 0 Downstream: 115
Modified
Published: 20 Jun 2025, 11:21
Last modified:12 May 2026, 12:04

Vulnerability Summary

Overall Risk (default)
low
19/100
CVSS Score
4.7 MEDIUM
v3.1 (nvd)
EPSS Score
0.09% LOW
0% probability +0.06%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

20 Jun 2025, 11:21
Published
Vulnerability first disclosed
12 May 2026, 12:04
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: net_sched: prio: fix a race in prio_tune() Gerrard Tai reported a race condition in PRIO, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put() This can be abused to underflow a parent's qlen. Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock.

CVSS Metrics

  • v3.1•MEDIUM•Score: 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.09%• Percentile: 25%

Techniques & Countermeasures

  • CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

    The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Affected Systems

  • debian•debian_linux

    11.0

  • linux•linux

    ≥ 7b8e0b6e659983154c8d7e756cdb833d89a3d4d7, < 53d11560e957d53ee87a0653d258038ce12361b7 | ≥ 7b8e0b6e659983154c8d7e756cdb833d89a3d4d7, < 4483d8b9127591c60c4eb789d6cab953bc4522a9 | ≥ 7b8e0b6e659983154c8d7e756cdb833d89a3d4d7, < 20f68e6a9e41693cb0e55e5b9ebbcb40983a4b8f | ≥ 7b8e0b6e659983154c8d7e756cdb833d89a3d4d7, < 3aaa7c01cf19d9b9bb64b88b65c3a6fd05da2eb4 | ≥ 7b8e0b6e659983154c8d7e756cdb833d89a3d4d7, < 46c15c9d0f65c9ba857d63f53264f4b17e8a715f | ≥ 7b8e0b6e659983154c8d7e756cdb833d89a3d4d7, < e3f6745006dc9423d2b065b90f191cfa11b1b584 | ≥ 7b8e0b6e659983154c8d7e756cdb833d89a3d4d7, < 93f9eeb678d4c9c1abf720b3615fa8299a490845 | ≥ 7b8e0b6e659983154c8d7e756cdb833d89a3d4d7, < d35acc1be3480505b5931f17e4ea9b7617fea4d3 | 5.0

  • linux•linux_kernel

    ≥ 5.0, < 5.4.295 | ≥ 5.5, < 5.10.239 | ≥ 5.11, < 5.15.186 | ≥ 5.16, < 6.1.142 | ≥ 6.2, < 6.6.94 | ≥ 6.7, < 6.12.34 | ≥ 6.13, < 6.15.3 | 6.16:rc1

References (11)