CVE-2020-12654: linux linux_kernel Out-of-bounds Write
Vulnerability summary
CVE-2020-12654 is a high (CVSS 7.1) Out-of-bounds Write vulnerability in linux linux_kernel. EPSS estimates a 1.22% chance of exploitation in the next 30 days, higher than 68.6% of scored vulnerabilities.
Not severe (CVSS 7.1, adjacent network); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 34 · Related 19Timeline
- 05-05-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
An issue was found in Linux kernel before 5.5.4. mwifiex_ret_wmm_get_status() in drivers/net/wireless/marvell/mwifiex/wmm.c allows a remote AP to trigger a heap-based buffer overflow because of an incorrect memcpy, aka CID-3a9b153c5591.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
1.22%
Chance of exploitation in the next 30 days
Percentile
69%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.22% 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: adjacent network, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu36 products
- linux< 3.13.0-180.231 | < 4.4.0-177.207 | < 4.15.0-96.97
- linux-aws< 4.4.0-1065.69 | < 4.4.0-1105.116 | < 4.15.0-1065.69
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.3< 5.3.0-1017.18~18.04.1
- linux-aws-fips< 4.15.0-2018.18 | All versions (No fix recorded)
Debian1 product
- linux< 5.5.13-1
Linux1 product
- linux_kernel< 5.5.4
3 vendors · 38 products
References
19 links- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.4X Refsource MISCREPORTRelease NotesVendor Advisory
- github.com/torvalds/linux/commit/3a9b153c5591548612c3955c9600a98150c81875X Refsource MISCREPORTPatchThird Party Advisory
