CVE-2020-36387
HIGHLinux Kernel 5.7-5.8.1 - Use-After-Free in io_uring Async Task Handling
Title source: llmDescription
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.
References (5)
Core 5
Core References
Mailing List, Patch, Release Notes, Vendor Advisory x_refsource_misc
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.2
Patch, Third Party Advisory x_refsource_misc
https://syzkaller.appspot.com/bug?id=ce5f07d6ec3b5050b8f0728a3b389aa510f2591b
Patch, Third Party Advisory x_refsource_misc
https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-io_async_task_func
Patch, Vendor Advisory x_refsource_misc
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6d816e088c359866f9867057e04f244c608c42fe
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210727-0006/
Scores
CVSS v3
7.8
EPSS
0.0006
EPSS Percentile
17.8%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-416
Status
published
Products (9)
linux/linux_kernel
5.7 - 5.7.16
netapp/h300e_firmware
netapp/h300s_firmware
netapp/h410c_firmware
netapp/h410s_firmware
netapp/h500e_firmware
netapp/h500s_firmware
netapp/h700e_firmware
netapp/h700s_firmware
Published
Jun 07, 2021
Tracked Since
Feb 18, 2026