CVE-2026-72098Critical· 9.8▾ MidnightIn 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; T…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 16.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.7%
Last analysed / modified upstream
0.7% → 0.7%
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.
Linux >= a739ff3f543afbb4a041c16cd0182c8e8d366e70 < 374775626c327aec2425c16b4d36706e5f8718b8Linux >= a739ff3f543afbb4a041c16cd0182c8e8d366e70 < dc662eed1c432cc2fd4e9314f58d30b3a8cca7ccLinux >= a739ff3f543afbb4a041c16cd0182c8e8d366e70 < 5488d3a69d205e28f74f18857b853aa12e778e66Linux >= a739ff3f543afbb4a041c16cd0182c8e8d366e70 < f7990c2b0f08b8841fcd2652d1d7002f5994a7a7Linux >= a739ff3f543afbb4a041c16cd0182c8e8d366e70 < 31d6e6c0ba8d5a7bd59660035a089307100c5e8eLinux 4.5Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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