01 Record

CVE-2025-40244

hfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent()

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

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02 Description

hfsplus: fix KMSAN uninit-value issue in __hfsplus_ext_cache_extent()

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: 0.15% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 4.5% 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 2026-10-19.
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

2025-12-04 15:31Z10 MO AGO

Last updated

2026-08-05 12:08Z2 MO AGO

Reserved

2025-04-16

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-665Improper InitializationClass

Data version

5.2

Document digest

acd94babed839371da86763b54d735f8986ddc996d318deb171330ddd9229c4b

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < c1ec90bed504640a42bb20a5f413be39cd17ad71, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < b8a72692aa42b7dcd179a96b90bc2763ac74576a, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < c135b8dca65526aa5b8814e9954e0ae317d9c598, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < d7e313039a8f3a6ee072dc5ff4643234d2d735cf, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < a5bfb13b4f406aef1a450f99d22d3e48df01528c, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 99202d94909d323a30d154ab0261c0a07166daec, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 14c673a2f3ecf650b694a52a88688f1d71849899, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 4840ceadef4290c56cc422f0fc697655f3cbf070, 2.6.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/c1ec90bed504640a42bb20a5f413be39cd17ad71
git.kernel.orghttps://git.kernel.org/stable/c/b8a72692aa42b7dcd179a96b90bc2763ac74576a
git.kernel.orghttps://git.kernel.org/stable/c/c135b8dca65526aa5b8814e9954e0ae317d9c598
git.kernel.orghttps://git.kernel.org/stable/c/d7e313039a8f3a6ee072dc5ff4643234d2d735cf
git.kernel.orghttps://git.kernel.org/stable/c/a5bfb13b4f406aef1a450f99d22d3e48df01528c
git.kernel.orghttps://git.kernel.org/stable/c/99202d94909d323a30d154ab0261c0a07166daec
git.kernel.orghttps://git.kernel.org/stable/c/14c673a2f3ecf650b694a52a88688f1d71849899
git.kernel.orghttps://git.kernel.org/stable/c/4840ceadef4290c56cc422f0fc697655f3cbf070

07 Fixed in

Debian 12

linux
Fixed in 6.1.158-1

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

Debian 13

linux
Fixed in 6.12.57-1

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

Debian 14

linux
Fixed in 6.17.6-1

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