01 Record

CVE-2026-64082

riscv: Fix register corruption from uninitialized cregs on error

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

riscv: Fix register corruption from uninitialized cregs on error

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: 0.12% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 2.1% 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: Analyzed. NVD last modified this record on 2026-09-03.
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

2026-07-19 15:39Z3 MO AGO

Last updated

2026-09-02 12:49Z1 MO AGO

Reserved

2026-07-19

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-908Use of Uninitialized ResourceBase
CWE-824Access of Uninitialized PointerBase

Data version

5.2

Document digest

05937766cb3723ab7f27d6b1915a963e0bc0d55b8a3ed415d94dfae938a25828

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux7383ee05314be58f8f9f018ee0ac53bef3808aea to < f2d88b0d7aebfa4643fc58bbae57210c6daff9c6, 7383ee05314be58f8f9f018ee0ac53bef3808aea to < 66dedb6028c3df6c6a3372dd935b823917e150d5, 7383ee05314be58f8f9f018ee0ac53bef3808aea to < 2a7d1daf2674fe7d5b1cc99a4e3b5f0f72d5958f, 7383ee05314be58f8f9f018ee0ac53bef3808aea to < 0599aa23734c48de9bce36d043a9ec90c23945a1, 7383ee05314be58f8f9f018ee0ac53bef3808aea to < 9e020156833f1ad0d425a1e3d85b65639f1c1c50, 7383ee05314be58f8f9f018ee0ac53bef3808aea to < 6ebcbb53fc9bc30843054ed99fd60b8e542628f4, 5.19—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/f2d88b0d7aebfa4643fc58bbae57210c6daff9c6
git.kernel.orghttps://git.kernel.org/stable/c/66dedb6028c3df6c6a3372dd935b823917e150d5
git.kernel.orghttps://git.kernel.org/stable/c/2a7d1daf2674fe7d5b1cc99a4e3b5f0f72d5958f
git.kernel.orghttps://git.kernel.org/stable/c/0599aa23734c48de9bce36d043a9ec90c23945a1
git.kernel.orghttps://git.kernel.org/stable/c/9e020156833f1ad0d425a1e3d85b65639f1c1c50
git.kernel.orghttps://git.kernel.org/stable/c/6ebcbb53fc9bc30843054ed99fd60b8e542628f4

07 Fixed in

Debian 12

linux
Fixed in 6.1.187-1
linux-6.12
Fixed in 6.12.111-1~deb12u1

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

Debian 13

linux
Fixed in 6.12.111-1

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

Debian 14

linux
Fixed in 7.0.12-1

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