01 Record

CVE-2022-4744

A double-free flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This

HighPUBLISHEDCNA: redhat

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

A double-free flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user registers the device when the register_netdevice function fails (NETDEV_REGISTER notifier). This

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.45% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 39.5% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2023-03-30 00:00Z3 YR AGO

Last updated

2025-02-14 15:45Z1 YR AGO

Reserved

2022-12-26

Assigning CNA

redhat

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-460Improper Cleanup on Thrown ExceptionBase
CWE-415Double FreeVariant
CWE-1341Multiple Releases of Same Resource or HandleBase

Data version

5.1

Document digest

ad8687450cf37f9f95d6fc62b918069f23ed91fb5c0f7a72477630b8e363b98c

05 Affected products

VendorProductVersionsPlatforms

n/aKernelLinux kernel 5.16-rc7—

06 References

git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=158b515f703e
packetstormsecurity.comhttp://packetstormsecurity.com/files/171912/CentOS-Stream-9-Missing-Kernel-Security-Fix.html
lists.debian.org[debian-lts-announce] 20230503 [SECURITY] [DLA 3403-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2023/05/msg00006.htmlmailing-list
security.netapp.comhttps://security.netapp.com/advisory/ntap-20230526-0009/

07 Fixed in

AlmaLinux 8

bpftool
Fixed in 4.18.0-513.5.1.el8_9
kernel
Fixed in 4.18.0-513.5.1.el8_9
kernel-abi-stablelists
Fixed in 4.18.0-513.5.1.el8_9
kernel-core
Fixed in 4.18.0-513.5.1.el8_9
kernel-cross-headers
Fixed in 4.18.0-513.5.1.el8_9
kernel-debug
Fixed in 4.18.0-513.5.1.el8_9
kernel-debug-core
Fixed in 4.18.0-513.5.1.el8_9
kernel-debug-devel
Fixed in 4.18.0-513.5.1.el8_9
kernel-debug-modules
Fixed in 4.18.0-513.5.1.el8_9
kernel-debug-modules-extra
Fixed in 4.18.0-513.5.1.el8_9
kernel-devel
Fixed in 4.18.0-513.5.1.el8_9
kernel-doc
Fixed in 4.18.0-513.5.1.el8_9
kernel-headers
Fixed in 4.18.0-513.5.1.el8_9
kernel-modules
Fixed in 4.18.0-513.5.1.el8_9
kernel-modules-extra
Fixed in 4.18.0-513.5.1.el8_9
kernel-tools
Fixed in 4.18.0-513.5.1.el8_9
kernel-tools-libs
Fixed in 4.18.0-513.5.1.el8_9
kernel-tools-libs-devel
Fixed in 4.18.0-513.5.1.el8_9
kernel-zfcpdump
Fixed in 4.18.0-513.5.1.el8_9
kernel-zfcpdump-core
Fixed in 4.18.0-513.5.1.el8_9
kernel-zfcpdump-devel
Fixed in 4.18.0-513.5.1.el8_9
kernel-zfcpdump-modules
Fixed in 4.18.0-513.5.1.el8_9
kernel-zfcpdump-modules-extra
Fixed in 4.18.0-513.5.1.el8_9
perf
Fixed in 4.18.0-513.5.1.el8_9
python3-perf
Fixed in 4.18.0-513.5.1.el8_9

AlmaLinux 9

bpftool
Fixed in 5.14.0-162.22.2.el9_1
kernel
Fixed in 5.14.0-162.22.2.el9_1
kernel-abi-stablelists
Fixed in 5.14.0-162.22.2.el9_1
kernel-core
Fixed in 5.14.0-162.22.2.el9_1
kernel-cross-headers
Fixed in 5.14.0-162.22.2.el9_1
kernel-debug
Fixed in 5.14.0-162.22.2.el9_1
kernel-debug-core
Fixed in 5.14.0-162.22.2.el9_1
kernel-debug-devel
Fixed in 5.14.0-162.22.2.el9_1
kernel-debug-devel-matched
Fixed in 5.14.0-162.22.2.el9_1
kernel-debug-modules
Fixed in 5.14.0-162.22.2.el9_1
kernel-debug-modules-extra
Fixed in 5.14.0-162.22.2.el9_1
kernel-devel
Fixed in 5.14.0-162.22.2.el9_1
kernel-devel-matched
Fixed in 5.14.0-162.22.2.el9_1
kernel-doc
Fixed in 5.14.0-162.22.2.el9_1
kernel-modules
Fixed in 5.14.0-162.22.2.el9_1
kernel-modules-extra
Fixed in 5.14.0-162.22.2.el9_1
kernel-rt
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-core
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-debug
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-debug-core
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-debug-devel
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-debug-kvm
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-debug-modules
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-debug-modules-extra
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-devel
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-kvm
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-modules
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-modules-extra
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-tools
Fixed in 5.14.0-162.22.2.el9_1
kernel-tools-libs
Fixed in 5.14.0-162.22.2.el9_1
kernel-tools-libs-devel
Fixed in 5.14.0-162.22.2.el9_1
kernel-zfcpdump
Fixed in 5.14.0-162.22.2.el9_1
kernel-zfcpdump-core
Fixed in 5.14.0-162.22.2.el9_1
kernel-zfcpdump-devel
Fixed in 5.14.0-162.22.2.el9_1
kernel-zfcpdump-devel-matched
Fixed in 5.14.0-162.22.2.el9_1
kernel-zfcpdump-modules
Fixed in 5.14.0-162.22.2.el9_1
kernel-zfcpdump-modules-extra
Fixed in 5.14.0-162.22.2.el9_1
perf
Fixed in 5.14.0-162.22.2.el9_1
python3-perf
Fixed in 5.14.0-162.22.2.el9_1

CloudLinux 8

bpftool
Fixed in 4.18.0-513.5.1.el8_9
kernel
Fixed in 4.18.0-513.5.1.el8_9
kernel-abi-stablelists
Fixed in 4.18.0-513.5.1.el8_9
kernel-core
Fixed in 4.18.0-513.5.1.el8_9
kernel-cross-headers
Fixed in 4.18.0-513.5.1.el8_9
kernel-debug
Fixed in 4.18.0-513.5.1.el8_9
kernel-debug-core
Fixed in 4.18.0-513.5.1.el8_9
kernel-debug-devel
Fixed in 4.18.0-513.5.1.el8_9
kernel-debug-modules
Fixed in 4.18.0-513.5.1.el8_9
kernel-debug-modules-extra
Fixed in 4.18.0-513.5.1.el8_9
kernel-devel
Fixed in 4.18.0-513.5.1.el8_9
kernel-doc
Fixed in 4.18.0-513.5.1.el8_9
kernel-headers
Fixed in 4.18.0-513.5.1.el8_9
kernel-modules
Fixed in 4.18.0-513.5.1.el8_9
kernel-modules-extra
Fixed in 4.18.0-513.5.1.el8_9
kernel-tools
Fixed in 4.18.0-513.5.1.el8_9
kernel-tools-libs
Fixed in 4.18.0-513.5.1.el8_9
kernel-tools-libs-devel
Fixed in 4.18.0-513.5.1.el8_9
kernel-zfcpdump
Fixed in 4.18.0-513.5.1.el8_9
kernel-zfcpdump-core
Fixed in 4.18.0-513.5.1.el8_9
kernel-zfcpdump-devel
Fixed in 4.18.0-513.5.1.el8_9
kernel-zfcpdump-modules
Fixed in 4.18.0-513.5.1.el8_9
kernel-zfcpdump-modules-extra
Fixed in 4.18.0-513.5.1.el8_9
perf
Fixed in 4.18.0-513.5.1.el8_9
python3-perf
Fixed in 4.18.0-513.5.1.el8_9

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

CloudLinux 9

bpftool
Fixed in 5.14.0-162.22.2.el9_1
kernel
Fixed in 5.14.0-162.22.2.el9_1
kernel-abi-stablelists
Fixed in 5.14.0-162.22.2.el9_1
kernel-core
Fixed in 5.14.0-162.22.2.el9_1
kernel-cross-headers
Fixed in 5.14.0-162.22.2.el9_1
kernel-debug
Fixed in 5.14.0-162.22.2.el9_1
kernel-debug-core
Fixed in 5.14.0-162.22.2.el9_1
kernel-debug-devel
Fixed in 5.14.0-162.22.2.el9_1
kernel-debug-devel-matched
Fixed in 5.14.0-162.22.2.el9_1
kernel-debug-modules
Fixed in 5.14.0-162.22.2.el9_1
kernel-debug-modules-extra
Fixed in 5.14.0-162.22.2.el9_1
kernel-devel
Fixed in 5.14.0-162.22.2.el9_1
kernel-devel-matched
Fixed in 5.14.0-162.22.2.el9_1
kernel-doc
Fixed in 5.14.0-162.22.2.el9_1
kernel-modules
Fixed in 5.14.0-162.22.2.el9_1
kernel-modules-extra
Fixed in 5.14.0-162.22.2.el9_1
kernel-rt
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-core
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-debug
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-debug-core
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-debug-devel
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-debug-kvm
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-debug-modules
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-debug-modules-extra
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-devel
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-kvm
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-modules
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-rt-modules-extra
Fixed in 5.14.0-162.22.2.rt21.186.el9_1
kernel-tools
Fixed in 5.14.0-162.22.2.el9_1
kernel-tools-libs
Fixed in 5.14.0-162.22.2.el9_1
kernel-tools-libs-devel
Fixed in 5.14.0-162.22.2.el9_1
kernel-zfcpdump
Fixed in 5.14.0-162.22.2.el9_1
kernel-zfcpdump-core
Fixed in 5.14.0-162.22.2.el9_1
kernel-zfcpdump-devel
Fixed in 5.14.0-162.22.2.el9_1
kernel-zfcpdump-devel-matched
Fixed in 5.14.0-162.22.2.el9_1
kernel-zfcpdump-modules
Fixed in 5.14.0-162.22.2.el9_1
kernel-zfcpdump-modules-extra
Fixed in 5.14.0-162.22.2.el9_1
perf
Fixed in 5.14.0-162.22.2.el9_1
python3-perf
Fixed in 5.14.0-162.22.2.el9_1

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Debian 12

linux
Fixed in 5.15.15-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 5.15.15-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 5.15.15-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

linux-hwe-edge
No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

linux-aws-5.0
No fix yet
linux-aws-5.3
No fix yet
linux-azure
No fix yet
linux-azure-5.3
No fix yet
linux-azure-edge
No fix yet
linux-gcp
No fix yet
linux-gcp-5.3
No fix yet
linux-gke-4.15
No fix yet
linux-gke-5.4
No fix yet
linux-gkeop-5.4
No fix yet
linux-hwe
No fix yet
linux-hwe-edge
No fix yet
linux-oem
No fix yet
linux-oracle-5.0
No fix yet
linux-oracle-5.3
No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

linux-aws-5.11
No fix yet
linux-aws-5.13
No fix yet
linux-aws-5.8
No fix yet
linux-azure-5.11
No fix yet
linux-azure-5.13
No fix yet
linux-azure-5.8
No fix yet
linux-gcp-5.11
No fix yet
linux-gcp-5.13
No fix yet
linux-gcp-5.8
No fix yet
linux-hwe-5.11
No fix yet
linux-hwe-5.13
No fix yet
linux-hwe-5.8
No fix yet
linux-intel-5.13
No fix yet
linux-oem-5.10
No fix yet
linux-oem-5.13
No fix yet
linux-oem-5.14
Fixed in 5.14.0-1022.24
linux-oem-5.6
No fix yet
linux-oracle-5.11
No fix yet
linux-oracle-5.13
No fix yet
linux-oracle-5.8
No fix yet
linux-raspi2
No fix yet
linux-riscv
No fix yet
linux-riscv-5.11
No fix yet
linux-riscv-5.8
No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

linux-riscv
No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.