CVE-2026-98419
Vulnerability Scoring
Analysis In Progress
CVE-2026-98419 Vulnerability Analysis & Exploit Details
CVE-2026-98419
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-2026-98419 Details
Status: Received on 14 Oct 2026, 14:17 UTC
Published on: 14 Oct 2026, 14:17 UTC
CVSS Release:
CVE-2026-98419 Vulnerability Summary
CVE-2026-98419: In the Linux kernel, the following vulnerability has been resolved: drop_monitor: fix out-of-bounds write in reset_per_cpu_data() In reset_per_cpu_data(), al is computed as: al = sizeof(struct net_dm_alert_msg); al += dm_hit_limit * sizeof(struct net_dm_drop_point); al += sizeof(struct nlattr); skb = genlmsg_new(al, GFP_KERNEL); ... nla = nla_reserve(skb, NLA_UNSPEC, sizeof(struct net_dm_alert_msg)); ... msg = nla_data(nla); memset(msg, 0, al); Because al includes sizeof(struct nlattr) (the 4-byte attribute header), genlmsg_new() allocates al bytes of tailroom starting at nla. However, msg points to nla_data(nla), which is located sizeof(struct nlattr) bytes past nla. Calling memset(msg, 0, al) therefore writes al bytes starting from msg, exceeding the allocated buffer by sizeof(struct nlattr) (4 bytes) and corrupting skb_shared_info. Fix this by letting al represent only the payload length, allocating the skb with genlmsg_new(nla_total_size(al), GFP_KERNEL), and zeroing al bytes from msg.
Assessing the Risk of CVE-2026-98419
Access Complexity Graph
The exploitability of CVE-2026-98419 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-2026-98419
No exploitability data is available for CVE-2026-98419.
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-2026-98419, 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-2026-98419, 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-2026-98419 does not compromise confidentiality.
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Integrity:
None
CVE-2026-98419 does not impact data integrity.
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Availability:
None
CVE-2026-98419 does not affect system availability.
CVE-2026-98419 References
External References
- https://git.kernel.org/stable/c/03b672eba4937ff18337049824a114012d57f202
- https://git.kernel.org/stable/c/439f392084f8f7f59ab9d47a9579185accefe1d8
- https://git.kernel.org/stable/c/530ae0a1458078c7a81fbffd9ff17d42129364d9
- https://git.kernel.org/stable/c/56b12f0cd476e4d90a0e2663a80102b388ebf78c
- https://git.kernel.org/stable/c/88d640efd655b10f9fa4e381caf777da1f17c2a6
- https://git.kernel.org/stable/c/8a04047c6dbff2f49a561b1ff53b043f4807e855
- https://git.kernel.org/stable/c/caf09c09e0f323015ab6777ed1bad5aa10688631
- https://git.kernel.org/stable/c/d54a044136b129822715e8798899af540ec7a9e9
CWE Common Weakness Enumeration
Unknown
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