CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
5.1%
Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196.
[
{
"product": "Linux kernel",
"vendor": "Canonical",
"versions": [
{
"lessThan": "5.4.0-51.56",
"status": "affected",
"version": "5.4 kernel",
"versionType": "custom"
},
{
"lessThan": "5.3.0-68.63",
"status": "affected",
"version": "5.3 kernel",
"versionType": "custom"
},
{
"lessThan": "4.15.0-121.123",
"status": "affected",
"version": "4.15 kernel",
"versionType": "custom"
},
{
"lessThan": "4.4.0-193.224",
"status": "affected",
"version": "4.4 kernel",
"versionType": "custom"
},
{
"lessThan": "3.13.0.182.191",
"status": "affected",
"version": "3.13 kernel",
"versionType": "custom"
},
{
"lessThan": "3.2.0-149.196",
"status": "affected",
"version": "3.2 kernel",
"versionType": "custom"
}
]
}
]
git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal/commit/?id=01872cb896c76cedeabe93a08456976ab55ad695
launchpad.net/bugs/1883840
lists.debian.org/debian-lts-announce/2021/10/msg00010.html
lists.debian.org/debian-lts-announce/2021/12/msg00012.html
lore.kernel.org/netdev/20201013171849.236025-1-kleber.souza%40canonical.com/T/
security.netapp.com/advisory/ntap-20210304-0006/
ubuntu.com/USN-4576-1
ubuntu.com/USN-4577-1
ubuntu.com/USN-4578-1
ubuntu.com/USN-4579-1
ubuntu.com/USN-4580-1
www.debian.org/security/2021/dsa-4978
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
5.1%