CVE-2026-72098
CRITICAL
INFO
Priority: 0.07
BB Relevance:
80/100
Published: 2026-08-15
Modified: 2026-10-30
First seen: 2026-10-30
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
Description
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.
Weakness Classification (1)
Affected Software (7)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | a739ff3f543afbb4a041c16cd0182c8e8d366e70 < 84d4d2a6988c9a733f7821452cefb5b0d93de2d1 |
| Linux | Linux | a739ff3f543afbb4a041c16cd0182c8e8d366e70 < 374775626c327aec2425c16b4d36706e5f8718b8 |
| Linux | Linux | a739ff3f543afbb4a041c16cd0182c8e8d366e70 < dc662eed1c432cc2fd4e9314f58d30b3a8cca7cc |
| Linux | Linux | a739ff3f543afbb4a041c16cd0182c8e8d366e70 < 5488d3a69d205e28f74f18857b853aa12e778e66 |
| Linux | Linux | a739ff3f543afbb4a041c16cd0182c8e8d366e70 < f7990c2b0f08b8841fcd2652d1d7002f5994a7a7 |
| Linux | Linux | a739ff3f543afbb4a041c16cd0182c8e8d366e70 < 31d6e6c0ba8d5a7bd59660035a089307100c5e8e |
| Linux | Linux | 4.5 |