CVE-2025-39839

N/A Unknown
Published: September 19, 2025 Modified: November 03, 2025

Description

In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix OOB read/write in network-coding decode batadv_nc_skb_decode_packet() trusts coded_len and checks only against skb->len. XOR starts at sizeof(struct batadv_unicast_packet), reducing payload headroom, and the source skb length is not verified, allowing an out-of-bounds read and a small out-of-bounds write. Validate that coded_len fits within the payload area of both destination and source sk_buffs before XORing.

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

10 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
0.0%
16th percentile
Exploitation Status
Not in CISA KEV