01 Record

CVE-2023-53692

ext4: fix use-after-free read in ext4_find_extent for bigalloc + inline

HighPUBLISHEDCNA: Linux

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

ext4: fix use-after-free read in ext4_find_extent for bigalloc + inline

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 0.16% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 5.1% 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: Deferred. NVD last modified this record on 2026-10-28.
Red Hat severity: Moderate. 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

2025-10-22 13:23Z1 YR AGO

Last updated

2026-08-05 09:15Z2 MO AGO

Reserved

2025-10-22

Assigning CNA

Linux

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-416Use After FreeVariant

Data version

5.2

Document digest

bd38f7adb37a0e786c1057081419c2a311cfb2dadedfbfec4d7aa140b8c33f3c

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux1ed1eef0551bebee8e56973ccd0900e3578edfb7 to < 0ce15000dee0ecd6f235f925a327803e2ef489c6, 6f4200ec76a0d31200c308ec5a71c68df5417004 to < a34f6dcb78c654ab905642c1b4e7e5fbb4f0babe, 9404839e0c9db5a517ea83c0ca3388b39d105fdf to < 770b0613637f59f3091dda1ff0c23671a5326b9c, d440d6427a5e3a877c1c259b8d2b216ddb65e185 to < 40566def189c513be2c694681256d7486cc6e368, 81b915181c630ee1cffa052e52874fe4e1ba91ac to < 96d440bee177669dc0acedca0abd73bae6a9be8b, 131294c35ed6f777bd4e79d42af13b5c41bf2775 to < 11c87c8df2cae1d6be83c07e59fef0792de73482, 131294c35ed6f777bd4e79d42af13b5c41bf2775 to < 14da044725a3ab10affa3566d29c15737c0e67a4, 131294c35ed6f777bd4e79d42af13b5c41bf2775 to < 835659598c67907b98cd2aa57bb951dfaf675c69, c0c8edbc8abbe8f16d80a1d794d1ba2c12b6f193, 4.19.270 to < 4.19.271, 5.4.229 to < 5.4.243, 5.10.163 to < 5.10.180, 5.15.87 to < 5.15.111, 6.1.4 to < 6.1.28, 6.0.18 to < 6.1, 6.2—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/0ce15000dee0ecd6f235f925a327803e2ef489c6
git.kernel.orghttps://git.kernel.org/stable/c/a34f6dcb78c654ab905642c1b4e7e5fbb4f0babe
git.kernel.orghttps://git.kernel.org/stable/c/770b0613637f59f3091dda1ff0c23671a5326b9c
git.kernel.orghttps://git.kernel.org/stable/c/40566def189c513be2c694681256d7486cc6e368
git.kernel.orghttps://git.kernel.org/stable/c/96d440bee177669dc0acedca0abd73bae6a9be8b
git.kernel.orghttps://git.kernel.org/stable/c/11c87c8df2cae1d6be83c07e59fef0792de73482
git.kernel.orghttps://git.kernel.org/stable/c/14da044725a3ab10affa3566d29c15737c0e67a4
git.kernel.orghttps://git.kernel.org/stable/c/835659598c67907b98cd2aa57bb951dfaf675c69

07 Fixed in

Debian 12

linux
Fixed in 6.1.37-1

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

Debian 13

linux
Fixed in 6.3.7-1

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

Debian 14

linux
Fixed in 6.3.7-1

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