01 Record

CVE-2025-39691

fs/buffer: fix use-after-free when call bh_read() helper

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

fs/buffer: fix use-after-free when call bh_read() helper

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: 0.17% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 7.1% 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: Modified. NVD last modified this record on 2026-07-30.
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

2025-09-05 17:20Z12 MO AGO

Last updated

2026-08-05 12:04Z1 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-416Use After FreeVariant

Data version

5.2

Document digest

1720fc13a73cdee6c5cc42d54d7e9ac7ad952c41aa6277cc732966ddf47b369f

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 70a09115da586bf662c3bae9c0c4a1b99251fad9, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 3169edb8945c295cf89120fc6b2c35cfe3ad4c9e, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 03b40bf5d0389ca23ae6857ee25789f0e0b47ce8, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < c58c6b532b7b69537cfd9ef701c7e37cdcf79dc4, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < c5aa6ba1127307ab5dc3773eaf40d73a3423841f, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 042cf48ecf67f72c8b3846c7fac678f472712ff3, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 90b5193edb323fefbee0e4e5bc39ed89dcc37719, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 7375f22495e7cd1c5b3b5af9dcc4f6dffe34ce49, 2.6.12—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/70a09115da586bf662c3bae9c0c4a1b99251fad9
git.kernel.orghttps://git.kernel.org/stable/c/3169edb8945c295cf89120fc6b2c35cfe3ad4c9e
git.kernel.orghttps://git.kernel.org/stable/c/03b40bf5d0389ca23ae6857ee25789f0e0b47ce8
git.kernel.orghttps://git.kernel.org/stable/c/c58c6b532b7b69537cfd9ef701c7e37cdcf79dc4
git.kernel.orghttps://git.kernel.org/stable/c/c5aa6ba1127307ab5dc3773eaf40d73a3423841f
git.kernel.orghttps://git.kernel.org/stable/c/042cf48ecf67f72c8b3846c7fac678f472712ff3
git.kernel.orghttps://git.kernel.org/stable/c/90b5193edb323fefbee0e4e5bc39ed89dcc37719
git.kernel.orghttps://git.kernel.org/stable/c/7375f22495e7cd1c5b3b5af9dcc4f6dffe34ce49
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-032379.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-019113.html

01 Record index

CVE-2025-39691

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2025-39691

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References