CVE-2026-98383
Vulnerability Scoring
Analysis In Progress
CVE-2026-98383 Vulnerability Analysis & Exploit Details
CVE-2026-98383
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-2026-98383 Details
Status: Received on 09 Oct 2026, 08:16 UTC
Published on: 09 Oct 2026, 08:16 UTC
CVSS Release:
CVE-2026-98383 Vulnerability Summary
CVE-2026-98383: In the Linux kernel, the following vulnerability has been resolved: bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL An LWT_SEG6LOCAL program can invalidate its cached SRH with bpf_lwt_seg6_adjust_srh() and then call bpf_skb_pull_data(). The latter may reallocate skb->head, leaving the per-CPU SRH pointer dangling. Post-program SRH validation then writes through that pointer. Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL programs so the verifier rejects this unsafe helper combination. Other LWT program types continue to expose the helper through lwt_out_func_proto().
Assessing the Risk of CVE-2026-98383
Access Complexity Graph
The exploitability of CVE-2026-98383 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-2026-98383
No exploitability data is available for CVE-2026-98383.
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-2026-98383, 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-2026-98383, 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-2026-98383 does not compromise confidentiality.
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Integrity:
None
CVE-2026-98383 does not impact data integrity.
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Availability:
None
CVE-2026-98383 does not affect system availability.
CVE-2026-98383 References
External References
- https://git.kernel.org/stable/c/0f38472a2aa8704a6b514c0dfa9c32f3672b8f32
- https://git.kernel.org/stable/c/37b18688cd18fd86d2f35c212df1611862a26cd5
- https://git.kernel.org/stable/c/9f9e57b5a3a033f95f49ef9d541340cdbcb80abb
- https://git.kernel.org/stable/c/b9bb0e735460751b620156f800a4279a28573392
- https://git.kernel.org/stable/c/cae8674489f26edf7553fdd660599466cbb4c32f
- https://git.kernel.org/stable/c/df0072be6fc373cb22f9ea854d458b04e32a03cf
- https://git.kernel.org/stable/c/e4a62833adff6ef0fe7c0b90393204fe3c26b5c5
- https://git.kernel.org/stable/c/fca71ead7a20290af1e2046983eeafae43d21af1
CWE Common Weakness Enumeration
Unknown
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