CVE-2022-48657: arm64: topology: fix possible overflow in amu_fie_setup()
Vulnerability summary
CVE-2022-48657 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16.1% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 5 · Related 5Timeline
- 28-04-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: arm64: topology: fix possible overflow in amu_fie_setup() cpufreq_get_hw_max_freq() returns max frequency in kHz as *unsigned int*, while freq_inv_set_max_ratio() gets passed this frequency in Hz as 'u64'. Multiplying max frequency by 1000 can potentially result in overflow -- multiplying by 1000ULL instead should avoid that... Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.25%
Chance of exploitation in the next 30 days
Percentile
16%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.25% 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.
Ubuntu85 products
- linux< 5.15.0-57.63
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 5.15.0-1027.31
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ cd0ed03a8903a0b0c6fc36e32d133d1ddfe70cd6, < 904f881b57360cf85de962d84d8614d94431f60e | ≥ cd0ed03a8903a0b0c6fc36e32d133d1ddfe70cd6, < 3c3edb82d67b2be9231174ac2af4af60d4af7549 | ≥ cd0ed03a8903a0b0c6fc36e32d133d1ddfe70cd6, < bb6d99e27cbe6b30e4e3bbd32927fd3b0bdec6eb | ≥ cd0ed03a8903a0b0c6fc36e32d133d1ddfe70cd6, < d4955c0ad77dbc684fc716387070ac24801b8bca | 5.7
- linux_kernel≥ 5.7, < 5.10.150 | ≥ 5.11, < 5.15.71 | ≥ 5.16, < 5.19.12
Debian1 product
- linux< 6.0.2-1
3 vendors · 88 products
