CVE-2026-72098
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
dm-verity: fix buffer overflow in FEC calculation
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| a739ff3f543afbb4a041c16cd0182c8e8d366e70 | affected | git | 374775626c327aec2425c16b4d36706e5f8718b8 | Unavailable | None listed |
| a739ff3f543afbb4a041c16cd0182c8e8d366e70 | affected | git | dc662eed1c432cc2fd4e9314f58d30b3a8cca7cc | Unavailable | None listed |
| a739ff3f543afbb4a041c16cd0182c8e8d366e70 | affected | git | 5488d3a69d205e28f74f18857b853aa12e778e66 | Unavailable | None listed |
| a739ff3f543afbb4a041c16cd0182c8e8d366e70 | affected | git | f7990c2b0f08b8841fcd2652d1d7002f5994a7a7 | Unavailable | None listed |
| a739ff3f543afbb4a041c16cd0182c8e8d366e70 | affected | git | 31d6e6c0ba8d5a7bd59660035a089307100c5e8e | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.5 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.114 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.42 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.5 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |