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CVE Vulnerability Details :
CVE-2026-31770
PUBLISHED
More InfoOfficial Page
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
View Known Exploited Vulnerability (KEV) details
Published At-01 May, 2026 | 14:14
Updated At-11 May, 2026 | 22:15
Rejected At-
▼CVE Numbering Authority (CNA)
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]

Affected Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • drivers/hwmon/occ/common.c
Default Status
unaffected
Versions
Affected
  • From c10e753d43ebd1d17e1c62bcee20c6124c2c7cca before c7d3712362c8ab8f82f441b649d9e446e7b9aa9d (git)
  • From c10e753d43ebd1d17e1c62bcee20c6124c2c7cca before 53e6175756b8c474b6247bbcea0aad3d68357475 (git)
  • From c10e753d43ebd1d17e1c62bcee20c6124c2c7cca before 2502684b9e835de9a992ec47c3e6c6faabe3858d (git)
  • From c10e753d43ebd1d17e1c62bcee20c6124c2c7cca before 37ae8fadc74ed68e5bc364ffd17746d88e449ae3 (git)
  • From c10e753d43ebd1d17e1c62bcee20c6124c2c7cca before bbbefc48f6617cfb738dcff7f44beb50b5dfeb38 (git)
  • From c10e753d43ebd1d17e1c62bcee20c6124c2c7cca before 243d55bd3f08cb15eee9d63f4716d4d4cdd760f5 (git)
  • From c10e753d43ebd1d17e1c62bcee20c6124c2c7cca before 7b89ce0c98bf3015f493ca4285b2d1056cd8c733 (git)
  • From c10e753d43ebd1d17e1c62bcee20c6124c2c7cca before 39e2a5bf970402a8530a319cf06122e216ba57b8 (git)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • drivers/hwmon/occ/common.c
Default Status
affected
Versions
Affected
  • 5.0
Unaffected
  • From 0 before 5.0 (semver)
  • From 5.10.253 through 5.10.* (semver)
  • From 5.15.203 through 5.15.* (semver)
  • From 6.1.168 through 6.1.* (semver)
  • From 6.6.134 through 6.6.* (semver)
  • From 6.12.81 through 6.12.* (semver)
  • From 6.18.22 through 6.18.* (semver)
  • From 6.19.12 through 6.19.* (semver)
  • From 7.0 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://git.kernel.org/stable/c/c7d3712362c8ab8f82f441b649d9e446e7b9aa9d
N/A
https://git.kernel.org/stable/c/53e6175756b8c474b6247bbcea0aad3d68357475
N/A
https://git.kernel.org/stable/c/2502684b9e835de9a992ec47c3e6c6faabe3858d
N/A
https://git.kernel.org/stable/c/37ae8fadc74ed68e5bc364ffd17746d88e449ae3
N/A
https://git.kernel.org/stable/c/bbbefc48f6617cfb738dcff7f44beb50b5dfeb38
N/A
https://git.kernel.org/stable/c/243d55bd3f08cb15eee9d63f4716d4d4cdd760f5
N/A
https://git.kernel.org/stable/c/7b89ce0c98bf3015f493ca4285b2d1056cd8c733
N/A
https://git.kernel.org/stable/c/39e2a5bf970402a8530a319cf06122e216ba57b8
N/A
Hyperlink: https://git.kernel.org/stable/c/c7d3712362c8ab8f82f441b649d9e446e7b9aa9d
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/53e6175756b8c474b6247bbcea0aad3d68357475
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/2502684b9e835de9a992ec47c3e6c6faabe3858d
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/37ae8fadc74ed68e5bc364ffd17746d88e449ae3
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/bbbefc48f6617cfb738dcff7f44beb50b5dfeb38
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/243d55bd3f08cb15eee9d63f4716d4d4cdd760f5
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/7b89ce0c98bf3015f493ca4285b2d1056cd8c733
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/39e2a5bf970402a8530a319cf06122e216ba57b8
Resource: N/A
Details not found