CVE-2020-36386: linux linux_kernel Out-of-bounds Read
Vulnerability summary
CVE-2020-36386 is a high (CVSS 7.1) Out-of-bounds Read vulnerability in linux linux_kernel. EPSS estimates a 0.55% chance of exploitation in the next 30 days, higher than 45.9% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 22 · Related 20Timeline
- 07-06-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in the Linux kernel before 5.8.1. net/bluetooth/hci_event.c has a slab out-of-bounds read in hci_extended_inquiry_result_evt, aka CID-51c19bf3d5cf.
CVSS metrics
4 scores · 3 sources · 2 versions- 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
0.55%
Chance of exploitation in the next 30 days
Percentile
46%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.55% 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
1 foundExploit Reference (syzkaller.appspot.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu40 products
- linuxAll versions (No fix recorded) | < 4.4.0-190.220 | < 4.15.0-118.119 | < 5.4.0-48.52
- linux-aws< 4.4.0-1078.82 | < 4.4.0-1114.127 | < 4.15.0-1083.87 | < 5.4.0-1025.25
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.3All versions (No fix recorded)
- linux-aws-5.4< 5.4.0-1025.25~18.04.1
Debian1 product
- linux< 5.7.17-1
Linux1 product
- linux_kernel< 5.8.1
3 vendors · 42 products
References
9 links- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.1X Refsource MISCREPORTMailing ListPatchRelease NotesVendor Advisory
- syzkaller.appspot.com/text?tag=ReproC&x=15ca2f46900000X Refsource MISCREPORTExploitThird Party Advisory
- sites.google.com/view/syzscope/kasan-slab-out-of-bounds-read-in-hci_extended_inquiry_result_evtX Refsource MISCREPORTPatchThird Party Advisory
- syzkaller.appspot.com/bug?id=4bf11aa05c4ca51ce0df86e500fce486552dc8d2X Refsource MISCREPORTPatchThird Party Advisory
