CVE-2026-31770
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)
hwmon: (occ) Fix division by zero in occ_show_power_1()
In the Linux kernel, the following vulnerability has been resolved: hwmon: (occ) Fix division by zero in occ_show_power_1() In occ_show_power_1() case 1, the accumulator is divided by update_tag without checking for zero. If no samples have been collected yet (e.g. during early boot when the sensor block is included but hasn't been updated), update_tag is zero, causing a kernel divide-by-zero crash. The 2019 fix in commit 211186cae14d ("hwmon: (occ) Fix division by zero issue") only addressed occ_get_powr_avg() used by occ_show_power_2() and occ_show_power_a0(). This separate code path in occ_show_power_1() was missed. Fix this by reusing the existing occ_get_powr_avg() helper, which already handles the zero-sample case and uses mul_u64_u32_div() to multiply before dividing for better precision. Move the helper above occ_show_power_1() so it is visible at the call site. [groeck: Fix alignment problems reported by checkpatch]
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) |
|---|---|---|---|---|---|
| c10e753d43ebd1d17e1c62bcee20c6124c2c7cca | affected | git | c7d3712362c8ab8f82f441b649d9e446e7b9aa9d | Unavailable | None listed |
| c10e753d43ebd1d17e1c62bcee20c6124c2c7cca | affected | git | 53e6175756b8c474b6247bbcea0aad3d68357475 | Unavailable | None listed |
| c10e753d43ebd1d17e1c62bcee20c6124c2c7cca | affected | git | 2502684b9e835de9a992ec47c3e6c6faabe3858d | Unavailable | None listed |
| c10e753d43ebd1d17e1c62bcee20c6124c2c7cca | affected | git | 37ae8fadc74ed68e5bc364ffd17746d88e449ae3 | Unavailable | None listed |
| c10e753d43ebd1d17e1c62bcee20c6124c2c7cca | affected | git | bbbefc48f6617cfb738dcff7f44beb50b5dfeb38 | Unavailable | None listed |
| c10e753d43ebd1d17e1c62bcee20c6124c2c7cca | affected | git | 243d55bd3f08cb15eee9d63f4716d4d4cdd760f5 | Unavailable | None listed |
| c10e753d43ebd1d17e1c62bcee20c6124c2c7cca | affected | git | 7b89ce0c98bf3015f493ca4285b2d1056cd8c733 | Unavailable | None listed |
| c10e753d43ebd1d17e1c62bcee20c6124c2c7cca | affected | git | 39e2a5bf970402a8530a319cf06122e216ba57b8 | 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) |
|---|---|---|---|---|---|
| 5.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.0 | Unavailable | None listed |
| 5.10.253 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.203 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.168 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.134 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.81 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.22 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 6.19.12 | unaffected | semver | Unavailable | 6.19.* | None listed |
| 7.0 | unaffected | original_commit_for_fix | Unavailable | * | None listed |