CVE-2026-46293: clk: microchip: mpfs-ccc: fix out of bounds access during output registration
Vulnerability summary
CVE-2026-46293 is a high (CVSS 7.1) Out-of-bounds Read vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.2% of scored vulnerabilities.
Not severe (CVSS 7.1, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 26 · Related 26Timeline
- 08-06-2026PublishedVulnerability first disclosed.
- 14-06-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: clk: microchip: mpfs-ccc: fix out of bounds access during output registration UBSAN reported an out of bounds access during registration of the last two outputs. This out of bounds access occurs because space is only allocated in the hws array for two PLLs and the four output dividers that each has, but the defined IDs contain two DLLS and their two outputs each, which are not supported by the driver. The ID order is PLLs -> DLLs -> PLL outputs -> DLL outputs. Decrement the PLL output IDs by two while adding them to the array to avoid the problem.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS trend
Probability
0.13%
Chance of exploitation in the next 30 days
Percentile
2%
Versus all other CVEs
30-day change
Decrease -0.04 pp
From 0.17% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu139 products
- linux< 6.8.0-136.136 | All versions (No fix recorded) | < 7.0.0-28.28
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 6.8.0-1061.64 | All versions (No fix recorded) | < 7.0.0-1009.9
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ d39fb172760e426e0628f16b785c85e16d17bd5e, < 9ed9b580a814773482c0a4f1be045636e68cc109 | ≥ d39fb172760e426e0628f16b785c85e16d17bd5e, < 47bc7a03449c39805bc2665d3e57c73195d5bcf8 | ≥ d39fb172760e426e0628f16b785c85e16d17bd5e, < dbfcb09656cb30439577325c9dea2250203c2e3c | ≥ d39fb172760e426e0628f16b785c85e16d17bd5e, < a0780aeea166a7cf4706c45af4cadbb2a43a1fc9 | ≥ d39fb172760e426e0628f16b785c85e16d17bd5e, < f24efd415455b98a1f1cfc6071fe6fde71986706 | ≥ d39fb172760e426e0628f16b785c85e16d17bd5e, < 2f7ae8ab6aa73daaf080d5332110357c29df9c36 | 6.1
- linux_kernel≥ 6.1, < 6.1.175 | ≥ 6.2, < 6.6.140 | ≥ 6.7, < 6.12.88 | ≥ 6.13, < 6.18.30 | ≥ 6.19, < 7.0.7
Debian1 product
- linuxAll versions (No fix recorded) | < 6.12.88-1 | < 7.0.7-1
3 vendors · 142 products
