01 Record

CVE-2025-68794

iomap: adjust read range correctly for non-block-aligned positions

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

iomap: adjust read range correctly for non-block-aligned positions

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.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
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

0.68% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 52.3% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-10-19.

Red Hat severity

Low. 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

2026-01-13 15:29Z9 MO AGO

Last updated

2026-10-19 18:05Z10 DAYS AGO

Reserved

2025-12-24

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

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

Weaknesses

CWE-190Integer Overflow or WraparoundBase
CWE-191Integer Underflow (Wrap or Wraparound)Base

Data version

5.2

Document digest

2d82e10f0dc755a9c780b15da28e8fca593efc1f28bea9b24f05ee9a1b3cc13a

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux9dc55f1389f9569acf9659e58dd836a9c70df217 to < ce20f49ac9194cf81a77f01d1c316d7c17ae753c, 9dc55f1389f9569acf9659e58dd836a9c70df217 to < 275b37a1e5c2c8abd313e8075f6aec9a349f291b, 9dc55f1389f9569acf9659e58dd836a9c70df217 to < b8c9f25fd84328c5fcc4f70c6d1e8f1d4787eaac, 9dc55f1389f9569acf9659e58dd836a9c70df217 to < 82b60ffbb532d919959702768dca04c3c0500ae5, 9dc55f1389f9569acf9659e58dd836a9c70df217 to < 12053695c8ef5410e8cc6c9ed4c0db9cd9c82b3e, 9dc55f1389f9569acf9659e58dd836a9c70df217 to < 142194fb21afe964d2d194cab1fc357cbf87e899, 9dc55f1389f9569acf9659e58dd836a9c70df217 to < 7aa6bc3e8766990824f66ca76c19596ce10daf3e, 4.19—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/ce20f49ac9194cf81a77f01d1c316d7c17ae753c
git.kernel.orghttps://git.kernel.org/stable/c/275b37a1e5c2c8abd313e8075f6aec9a349f291b
git.kernel.orghttps://git.kernel.org/stable/c/b8c9f25fd84328c5fcc4f70c6d1e8f1d4787eaac
git.kernel.orghttps://git.kernel.org/stable/c/82b60ffbb532d919959702768dca04c3c0500ae5
git.kernel.orghttps://git.kernel.org/stable/c/12053695c8ef5410e8cc6c9ed4c0db9cd9c82b3e
git.kernel.orghttps://git.kernel.org/stable/c/142194fb21afe964d2d194cab1fc357cbf87e899
git.kernel.orghttps://git.kernel.org/stable/c/7aa6bc3e8766990824f66ca76c19596ce10daf3e

07 Fixed in

Debian 12

linux
Fixed in 6.1.187-1

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

Debian 13

linux
Fixed in 6.12.69-1

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

Debian 14

linux
Fixed in 6.18.3-1

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