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CVE-2023-53285

24
FAUCET Score

CVE-2023-53285 is a high-severity vulnerability affecting the Linux kernel, specifically within the ext4 filesystem. It involves a missing bounds check in the get_max_inline_xattr_value_size() function, which could lead to reading beyond allocated memory if an inode table becomes corrupted due to direct writes to the block device. This local attack vector (CVSS:3.1/AV:L) has low attack complexity and can result in high impacts to confidentiality, integrity, and availability (CVSS: 7.8 HIGH). There is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.14.315CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.15, < 4.19.283CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 4.20, < 5.4.243CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.5, < 5.10.180CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.15.112CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.14%
Probability of exploitation in next 30 days
EPSS Percentile
4.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0014 is in the 19th percentile among its peer group of 17,070 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-427.13.1.el9_4
View patch
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
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2023-53285Moderate

kernel: ext4: add bounds checking in get_max_inline_xattr_value_size()

Sep 16, 2025

References

git.kernel.org / stable/c/1d2caddbeeee56fbbc36b428c5b909c3ad88eb7f
Patch
git.kernel.org / stable/c/2220eaf90992c11d888fe771055d4de330385f01
Patch
git.kernel.org / stable/c/3d7b8fbcd2273e2b9f4c6de5ce2f4c0cd3cb1205
Patch
git.kernel.org / stable/c/4597554b4f7b29e7fd78aa449bab648f8da4ee2c
Patch
git.kernel.org / stable/c/486efbbc9445dca7890a1b86adbccb88b91284b0
Patch
git.kernel.org / stable/c/5a229d21b98d132673096710e8281ef522dab1d1
Patch
git.kernel.org / stable/c/88a06a94942c5c0a896e9da1113a6bb29e36cbef
Patch
git.kernel.org / stable/c/e780058bd75614b66882bc02620ddbd884171560
Patch
git.kernel.org / stable/c/f22b274429e88d3dc7e79d375b56ce4f2f59f0b4
Patch