CVE-2025-38617

Published Aug 22, 2025

Last updated 2 months ago

CVSS medium 4.7

Overview

Description
In the Linux kernel, the following vulnerability has been resolved: net/packet: fix a race in packet_set_ring() and packet_notifier() When packet_set_ring() releases po->bind_lock, another thread can run packet_notifier() and process an NETDEV_UP event. This race and the fix are both similar to that of commit 15fe076edea7 ("net/packet: fix a race in packet_bind() and packet_notifier()"). There too the packet_notifier NETDEV_UP event managed to run while a po->bind_lock critical section had to be temporarily released. And the fix was similarly to temporarily set po->num to zero to keep the socket unhooked until the lock is retaken. The po->bind_lock in packet_set_ring and packet_notifier precede the introduction of git history.
Source
416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD status
Analyzed
Products
linux_kernel, debian_linux

Risk scores

CVSS 3.1

Type
Primary
Base score
4.7
Impact score
3.6
Exploitability score
1
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Severity
MEDIUM

Weaknesses

nvd@nist.gov
CWE-362

Social media

Hype score is a measure of social media activity compared against trending CVEs from the past 12 months. Max score 100.

Hype score

31

  1. #exploit #Kernel_Security A Race Within A Race: Exploiting CVE-2025-38617 in Linux Packet Sockets https://t.co/oavL2He7Ll // A step-by-step guide to exploiting a 20-year-old bug in the Linux kernel to achieve full privilege escalation and container escape, plus a cool bug-hunting

    @ksg93rd

    4 Mar 2026

    277 Impressions

    2 Retweets

    7 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

  2. 20年以上潜伏していたLinuxカーネルの欠陥が、ついに特権昇格とコンテナ脱出を可能にする深刻な脆弱性として明らかになった。単純な競合条件が高度な防御機構を突破する実証も示された。 CVE-2025-38617は、Li

    @yousukezan

    3 Mar 2026

    32362 Impressions

    196 Retweets

    465 Likes

    208 Bookmarks

    3 Replies

    3 Quotes

  3. A Race Within A Race: Exploiting CVE-2025-38617 in Linux Packet Sockets. A step-by-step guide to exploiting a 20-year-old bug in the Linux kernel to achieve full privilege escalation and container escape, plus a cool bug-hunting heuristic. https://t.co/IxURrHpBT0

    @calif_io

    3 Mar 2026

    7382 Impressions

    37 Retweets

    114 Likes

    71 Bookmarks

    3 Replies

    0 Quotes

  4. CVE-2025-38617 In the Linux kernel, the following vulnerability has been resolved: net/packet: fix a race in packet_set_ring() and packet_notifier() When packet_set_ring() release… https://t.co/aKmKSqg5Ei

    @CVEnew

    22 Aug 2025

    261 Impressions

    0 Retweets

    0 Likes

    0 Bookmarks

    0 Replies

    0 Quotes

Configurations

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References

Sources include official advisories and independent security research.