CVE-2020-36387
HIGH
7.8
CVSS Score
Published: June 7, 2021 at 07:19 PM UTC
Updated: June 17, 2026 at 03:15 AM UTC
17 products affected across 2 vendorsLinux KernelH700S FirmwareH410S Firmware
Using N/A by N/A?
Get instant alerts when new vulnerabilities affect N/A - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.8
Exploit prediction
EPSS 0.4%
Description
An issue was discovered in the Linux kernel before 5.8.2. fs/io_uring.c has a use-after-free related to io_async_task_func and ctx reference holding, aka CID-6d816e088c35.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
5.7 ≤ v < 5.7.165.8 ≤ v < 5.8.2
Affected range stops below 5.7.16, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.8.2, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6d816e088c359866f9867057e04f244c608c42fe
- https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-io_async_task_func
- https://syzkaller.appspot.com/bug?id=ce5f07d6ec3b5050b8f0728a3b389aa510f2591b
References (5)
x_refsource_MISCMailing ListPatchRelease NotesVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.2x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6d816e088c359866f9867057e04f244c608c42fex_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20210727-0006/x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-io_async_task_funcx_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://syzkaller.appspot.com/bug?id=ce5f07d6ec3b5050b8f0728a3b389aa510f2591bCVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-416
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card