Ubuntu.comUB:CVE-2020-36387CVE-2020-36387
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
14.2%
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
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.2
git.kernel.org/linus/6d816e088c359866f9867057e04f244c608c42fe
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6d816e088c359866f9867057e04f244c608c42fe
launchpad.net/bugs/cve/CVE-2020-36387
nvd.nist.gov/vuln/detail/CVE-2020-36387
security-tracker.debian.org/tracker/CVE-2020-36387
sites.google.com/view/syzscope/kasan-use-after-free-read-in-io_async_task_func
syzkaller.appspot.com/bug?id=ce5f07d6ec3b5050b8f0728a3b389aa510f2591b
www.cve.org/CVERecord?id=CVE-2020-36387
Related
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
14.2%