Answer in brief
CVE-2025-39839 records a Unknown severity vulnerability in batman-adv: fix OOB read/write in network-coding decode. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2025-39839 records a Unknown severity vulnerability in batman-adv: fix OOB read/write in network-coding decode. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <30fc47248f02b8a14a61df469e1da4704be1a19f || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183 || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <5d334bce9fad58cf328d8fa14ea1fff855819863 || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <dce6c2aa70e94c04c523b375dfcc664d7a0a560a || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <bb37252c9af1cb250f34735ee98f80b46be3cef1 || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <20080709457bc1e920eb002483d7d981d9b2ac1c || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <a67c6397fcb7e842d3c595243049940970541c48 || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087 | 30fc47248f02b8a14a61df469e1da4704be1a19f, 1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183, 5d334bce9fad58cf328d8fa14ea1fff855819863, dce6c2aa70e94c04c523b375dfcc664d7a0a560a, bb37252c9af1cb250f34735ee98f80b46be3cef1, 20080709457bc1e920eb002483d7d981d9b2ac1c, a67c6397fcb7e842d3c595243049940970541c48, d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087 |
| Linux/Linuxgeneric | 3.10 | Not reported |
| Siemens/RUGGEDCOM RST2428Pgeneric | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familygeneric | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCH328generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM324generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM328generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM332generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRH334 (24 V DC, 8xFO, CC)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230 V AC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230 V AC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24 V DC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24 V DC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230 V AC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230 V AC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SIMATIC CN 4100generic | >=0 <V5.0 | V5.0 |
Published upstream
Sep 19, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <30fc47248f02b8a14a61df469e1da4704be1a19f || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183 || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <5d334bce9fad58cf328d8fa14ea1fff855819863 || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <dce6c2aa70e94c04c523b375dfcc664d7a0a560a || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <bb37252c9af1cb250f34735ee98f80b46be3cef1 || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <20080709457bc1e920eb002483d7d981d9b2ac1c || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <a67c6397fcb7e842d3c595243049940970541c48 || >=2df5278b0267c799f3e877e8eeddbb6e93cda0bb <d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087 | 30fc47248f02b8a14a61df469e1da4704be1a19f, 1e36c6c8dc8023b4bbe9a16e819f9998b9b6a183, 5d334bce9fad58cf328d8fa14ea1fff855819863, dce6c2aa70e94c04c523b375dfcc664d7a0a560a, bb37252c9af1cb250f34735ee98f80b46be3cef1, 20080709457bc1e920eb002483d7d981d9b2ac1c, a67c6397fcb7e842d3c595243049940970541c48, d77b6ff0ce35a6d0b0b7b9581bc3f76d041d4087 |
| Linux/Linuxgeneric | 3.10 | Not reported |
| Siemens/RUGGEDCOM RST2428Pgeneric | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familygeneric | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCH328generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM324generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM328generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XCM332generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRH334 (24 V DC, 8xFO, CC)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230 V AC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (230 V AC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24 V DC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (24 V DC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230 V AC, 12xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+)generic | >=0 <V3.3 | V3.3 |
| Siemens/SCALANCE XRM334 (2x230 V AC, 8xFO)generic | >=0 <V3.3 | V3.3 |
| Siemens/SIMATIC CN 4100generic | >=0 <V5.0 | V5.0 |
Published upstream
Sep 19, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.