CVE-2025-38574
Vulnerability Scoring
Analysis In Progress
CVE-2025-38574 Vulnerability Analysis & Exploit Details
CVE-2025-38574
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2025-38574 Details
Status: Awaiting Analysis
Last updated: 🕕 03 Nov 2025, 18:16 UTC
Originally published on: 🕔 19 Aug 2025, 17:15 UTC
Time between publication and last update: 76 days
CVSS Release:
CVE-2025-38574 Vulnerability Summary
CVE-2025-38574: In the Linux kernel, the following vulnerability has been resolved: pptp: ensure minimal skb length in pptp_xmit() Commit aabc6596ffb3 ("net: ppp: Add bound checking for skb data on ppp_sync_txmung") fixed ppp_sync_txmunge() We need a similar fix in pptp_xmit(), otherwise we might read uninit data as reported by syzbot. BUG: KMSAN: uninit-value in pptp_xmit+0xc34/0x2720 drivers/net/ppp/pptp.c:193 pptp_xmit+0xc34/0x2720 drivers/net/ppp/pptp.c:193 ppp_channel_bridge_input drivers/net/ppp/ppp_generic.c:2290 [inline] ppp_input+0x1d6/0xe60 drivers/net/ppp/ppp_generic.c:2314 pppoe_rcv_core+0x1e8/0x760 drivers/net/ppp/pppoe.c:379 sk_backlog_rcv+0x142/0x420 include/net/sock.h:1148 __release_sock+0x1d3/0x330 net/core/sock.c:3213 release_sock+0x6b/0x270 net/core/sock.c:3767 pppoe_sendmsg+0x15d/0xcb0 drivers/net/ppp/pppoe.c:904 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x330/0x3d0 net/socket.c:727 ____sys_sendmsg+0x893/0xd80 net/socket.c:2566 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2620 __sys_sendmmsg+0x2d9/0x7c0 net/socket.c:2709
Assessing the Risk of CVE-2025-38574
Access Complexity Graph
The exploitability of CVE-2025-38574 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2025-38574
No exploitability data is available for CVE-2025-38574.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2025-38574, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2025-38574, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2025-38574 does not compromise confidentiality.
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Integrity:
None
CVE-2025-38574 does not impact data integrity.
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Availability:
None
CVE-2025-38574 does not affect system availability.
CVE-2025-38574 References
External References
- https://git.kernel.org/stable/c/1a04db0fd75cb6034fc27a56b67b3b8b9022a98c
- https://git.kernel.org/stable/c/26672f1679b143aa34fca0b6046b7fd0c184770d
- https://git.kernel.org/stable/c/5005d24377378a20e5c0e53052fc4ebdcdcbc611
- https://git.kernel.org/stable/c/504cc4ab91073d2ac7404ad146139f86ecee7193
- https://git.kernel.org/stable/c/5de7513f38f3c19c0610294ee478242bea356f8c
- https://git.kernel.org/stable/c/97b8c5d322c5c0038cac4bc56fdbe237d0be426f
- https://git.kernel.org/stable/c/b7dcda76fd0615c0599c89f36873a6cd48e02dbb
- https://git.kernel.org/stable/c/de9c4861fb42f0cd72da844c3c34f692d5895b7b
- https://git.kernel.org/stable/c/ea99b88b1999ebcb24d5d3a6b7910030f40d3bba
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
CWE Common Weakness Enumeration
Unknown
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