Answer in brief
CVE-2026-72098 records a Unknown severity vulnerability in dm-verity: fix buffer overflow in FEC calculation. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). 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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a739ff3f543afbb4a041c16cd0182c8e8d366e70 <5488d3a69d205e28f74f18857b853aa12e778e66 || >=a739ff3f543afbb4a041c16cd0182c8e8d366e70 <f7990c2b0f08b8841fcd2652d1d7002f5994a7a7 || >=a739ff3f543afbb4a041c16cd0182c8e8d366e70 <31d6e6c0ba8d5a7bd59660035a089307100c5e8e | 5488d3a69d205e28f74f18857b853aa12e778e66, f7990c2b0f08b8841fcd2652d1d7002f5994a7a7, 31d6e6c0ba8d5a7bd59660035a089307100c5e8e |
| Linux/Linuxgeneric | 4.5 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: dm-verity: fix buffer overflow in FEC calculation There's a buffer overflow in dm-verity-fec: if (neras && *neras <= v->fec->roots) fio->erasures[(*neras)++] = i; This allows *neras to reach roots + 1 (the post-increment pushes it past roots). This value is then passed as no_eras to decode_rs8(). Inside the RS decoder (lib/reed_solomon/decode_rs.c:113-121), the erasure locator polynomial loop writes lambda[j] where j can reach nroots + 1 — one element past the end of lambda[] (which is sized nroots + 1, valid indices 0..nroots). The out-of-bounds write lands on syn[0], corrupting the syndrome buffer.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-72098 records a Unknown severity vulnerability in dm-verity: fix buffer overflow in FEC calculation. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). 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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a739ff3f543afbb4a041c16cd0182c8e8d366e70 <5488d3a69d205e28f74f18857b853aa12e778e66 || >=a739ff3f543afbb4a041c16cd0182c8e8d366e70 <f7990c2b0f08b8841fcd2652d1d7002f5994a7a7 || >=a739ff3f543afbb4a041c16cd0182c8e8d366e70 <31d6e6c0ba8d5a7bd59660035a089307100c5e8e | 5488d3a69d205e28f74f18857b853aa12e778e66, f7990c2b0f08b8841fcd2652d1d7002f5994a7a7, 31d6e6c0ba8d5a7bd59660035a089307100c5e8e |
| Linux/Linuxgeneric | 4.5 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: dm-verity: fix buffer overflow in FEC calculation There's a buffer overflow in dm-verity-fec: if (neras && *neras <= v->fec->roots) fio->erasures[(*neras)++] = i; This allows *neras to reach roots + 1 (the post-increment pushes it past roots). This value is then passed as no_eras to decode_rs8(). Inside the RS decoder (lib/reed_solomon/decode_rs.c:113-121), the erasure locator polynomial loop writes lambda[j] where j can reach nroots + 1 — one element past the end of lambda[] (which is sized nroots + 1, valid indices 0..nroots). The out-of-bounds write lands on syn[0], corrupting the syndrome buffer.
Quoted source text, attributed separately from HOL analysis.