01 Record

CVE-2026-89489

openrisc: fix arbitrary kernel memory access via or1k_atomic syscall

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

openrisc: fix arbitrary kernel memory access via or1k_atomic syscall

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: 0.13% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 2.5% 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: Received. 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

2026-09-11 19:43Z1 MO AGO

Last updated

2026-10-19 08:47Z10 DAYS AGO

Reserved

2026-09-11

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-822Untrusted Pointer DereferenceBase

Data version

5.2

Document digest

5578ab9e746a32e8d45c32c5be701352bc93a783a5a5de6270ce9b137a2436ae

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux9d02a4283e9ce4e9ca11ff00615bdacdb0515a1a to < bf310718c6fa6adeee06d207a55489546d860e2c, 9d02a4283e9ce4e9ca11ff00615bdacdb0515a1a to < 497cba0b02e5555d99fe9ee1dc478af743ab7f7a, 9d02a4283e9ce4e9ca11ff00615bdacdb0515a1a to < 1f2e92e499d863f81df1732af59b4a3559969193, 9d02a4283e9ce4e9ca11ff00615bdacdb0515a1a to < 574ae2ac2b314aa33498cd2c28add106cbe644f2, 9d02a4283e9ce4e9ca11ff00615bdacdb0515a1a to < a520e8cac54fb403f3800125b606f55fcad42cb9, 9d02a4283e9ce4e9ca11ff00615bdacdb0515a1a to < d64a75369cd0f2ee79afcc9d9ca34a3890989379, 9d02a4283e9ce4e9ca11ff00615bdacdb0515a1a to < b53435c079c78f89f70a62dd5a322cca4e292b34, 9d02a4283e9ce4e9ca11ff00615bdacdb0515a1a to < 78004e9a87f240df03e2f73120d291763c32e0a7, 3.1—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/bf310718c6fa6adeee06d207a55489546d860e2c
git.kernel.orghttps://git.kernel.org/stable/c/497cba0b02e5555d99fe9ee1dc478af743ab7f7a
git.kernel.orghttps://git.kernel.org/stable/c/1f2e92e499d863f81df1732af59b4a3559969193
git.kernel.orghttps://git.kernel.org/stable/c/574ae2ac2b314aa33498cd2c28add106cbe644f2
git.kernel.orghttps://git.kernel.org/stable/c/a520e8cac54fb403f3800125b606f55fcad42cb9
git.kernel.orghttps://git.kernel.org/stable/c/d64a75369cd0f2ee79afcc9d9ca34a3890989379
git.kernel.orghttps://git.kernel.org/stable/c/b53435c079c78f89f70a62dd5a322cca4e292b34
git.kernel.orghttps://git.kernel.org/stable/c/78004e9a87f240df03e2f73120d291763c32e0a7

07 Fixed in

Debian 12

linux
Fixed in 6.1.190-1
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 7.2.6-1

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