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CVE-2023-53618

20
FAUCET Score

CVE-2023-53618 addresses a vulnerability in the Linux kernel's Btrfs filesystem where invalid reloc tree root keys could trigger an ASSERT() and lead to a system crash. Specifically, the issue arises when a reloc tree is incorrectly created for a non-subvolume tree, which should not occur. This vulnerability is rated Medium severity (CVSS 5.5) with a local attack vector, low attack complexity, and a high impact on availability, meaning it could lead to system denial of service. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.2.19, < 5.3CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.3.4, < 5.4CPE match
cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.2.19, < 5.3CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.3.4, < 5.15.127CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.16, < 6.1.46CPE 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:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.19%
Probability of exploitation in next 30 days
EPSS Percentile
8.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0019 is in the 43rd percentile among its peer group of 15,940 CVEs.

Social Chatter

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

Vendor Patches (2)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2023-53618Low

kernel: btrfs: reject invalid reloc tree root keys with stack dump

Oct 7, 2025

References

git.kernel.org / stable/c/314135b7bae9618a317874ae195272682cf2d5d4
Patch
git.kernel.org / stable/c/3ae93b316ca4b8b3c33798ef1d210355f2fb9318
Patch
git.kernel.org / stable/c/6ebcd021c92b8e4b904552e4d87283032100796d
Patch
git.kernel.org / stable/c/84256e00eeca73c529fc6196e478cc89b8098157
Patch