Ubuntu.comUB:CVE-2021-47324CVE-2021-47324
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
13.0%
In the Linux kernel, the following vulnerability has been resolved:
watchdog: Fix possible use-after-free in wdt_startup() This module’s remove
path calls del_timer(). However, that function does not wait until the
timer handler finishes. This means that the timer handler may still be
running after the driver’s remove function has finished, which would result
in a use-after-free. Fix by calling del_timer_sync(), which makes sure the
timer handler has finished, and unable to re-schedule itself.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-aws | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-aws-5.4 | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws-hwe | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-azure | < any | UNKNOWN |
| ubuntu | 14.04 | noarch | linux-azure | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-azure | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-azure-4.15 | < any | UNKNOWN |
References
git.kernel.org/linus/c08a6b31e4917034f0ed0cb457c3bb209576f542 (5.14-rc1)
git.kernel.org/stable/c/0ac50a76cf3cd63db000648b3b19f3f98b8aaa76
git.kernel.org/stable/c/146cc288fb80c662c9c35e7bc58325d1ac0a7875
git.kernel.org/stable/c/63a3dc24bd053792f84cb4eef0168b1266202a02
git.kernel.org/stable/c/862f2b5a7c38762ac9e369daefbf361a91aca685
git.kernel.org/stable/c/8adbbe6c86bb13e14f8a19e036ae5f4f5661fd90
git.kernel.org/stable/c/a397cb4576fc2fc802562418b3a50b8f67d60d31
git.kernel.org/stable/c/b4ebf4a4692e84163a69444c70ad515de06e2259
git.kernel.org/stable/c/c08a6b31e4917034f0ed0cb457c3bb209576f542
git.kernel.org/stable/c/dc9403097be52d57a5c9c35efa9be79d166a78af
launchpad.net/bugs/cve/CVE-2021-47324
nvd.nist.gov/vuln/detail/CVE-2021-47324
security-tracker.debian.org/tracker/CVE-2021-47324
www.cve.org/CVERecord?id=CVE-2021-47324
Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
13.0%