CVE-2022-3564

24

FAUCET Score

CVE-2022-3564 is a critical use-after-free vulnerability in the Linux Kernel's Bluetooth component, specifically within the l2cap_reassemble_sdu function, affecting Debian, Linux, and NetApp products. With a CVSS score of 7.1 (High), this vulnerability can be exploited by an attacker on an adjacent network with high attack complexity, potentially leading to high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage regarding this vulnerability.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		>= 3.6, < 4.9.333CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::
		>= 4.10, < 4.14.299CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::
		>= 4.15, < 4.19.265CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::
		>= 4.20, < 5.4.224CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::
		>= 5.5.0, < 5.10.154CPE matchmatch criteria	cpe:2.3:o:linux:linux_kernel::::::::

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

Exploitability Score

2.1

Impact Score

3.4

CvssVersion

3.1

Exploit Intelligence

EPSS Score

1.29%

Probability of exploitation in next 30 days

EPSS Percentile

67.2%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0129 is in the 89th percentile among its peer group of 45 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (31)

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt-0:3.10.0-1160.95.1.rt56.1241.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: kernel-0:3.10.0-1160.95.1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7Fixed in: kpatch-patch

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7.4 Advanced Update SupportFixed in: kernel-0:3.10.0-693.111.1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7.6 Advanced Update Support(Disable again in 2026 - SPRHEL-7118)Fixed in: kernel-0:3.10.0-957.104.1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7.7 Advanced Update SupportFixed in: kernel-0:3.10.0-1062.72.1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7.7 Telco Extended Update SupportFixed in: kernel-0:3.10.0-1062.72.1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7.7 Update Services for SAP SolutionsFixed in: kernel-0:3.10.0-1062.72.1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 7.7 Update Services for SAP SolutionsFixed in: kpatch-patch

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt-0:4.18.0-477.10.1.rt7.274.el8_8

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-477.10.1.el8_8

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsFixed in: kernel-0:4.18.0-147.80.1.el8_1

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsFixed in: kpatch-patch

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Advanced Update SupportFixed in: kernel-0:4.18.0-193.105.1.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceFixed in: kernel-rt-0:4.18.0-193.105.1.rt13.156.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceFixed in: kernel-0:4.18.0-193.105.1.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsFixed in: kernel-0:4.18.0-193.105.1.el8_2

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsFixed in: kpatch-patch

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Extended Update SupportFixed in: kernel-rt-0:4.18.0-305.82.1.rt7.154.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Extended Update SupportFixed in: kernel-0:4.18.0-305.82.1.el8_4

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.4 Extended Update SupportFixed in: kpatch-patch

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.6 Extended Update SupportFixed in: kernel-0:4.18.0-372.57.1.el8_6

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8.6 Extended Update SupportFixed in: kpatch-patch

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-162.18.1.el9_1

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt-0:5.14.0-162.18.1.rt21.181.el9_1

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9Fixed in: kpatch-patch

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.0 Extended Update SupportFixed in: kernel-0:5.14.0-70.49.1.el9_0

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.0 Extended Update SupportFixed in: kernel-rt-0:5.14.0-70.49.1.rt21.120.el9_0

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 9.0 Extended Update SupportFixed in: kpatch-patch

redhatpatch availablevia redhat_api

Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-372.57.1.el8_6

redhatpatch availablevia redhat_api

Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 8Fixed in: redhat-virtualization-host-0:4.5.3-202306050942_8.6

Vendor Advisories (1)

redhatCVE-2022-3564Important

kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c

References

git.kernel.org / pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit

Patch

lists.debian.org / debian-lts-announce/2022/12/msg00031.html

Mailing ListThird Party Advisory

lists.debian.org / debian-lts-announce/2022/12/msg00034.html

Mailing ListThird Party Advisory

security.netapp.com / advisory/ntap-20221223-0001

Third Party Advisory

Third Party Advisory