01 Record

CVE-2026-89653

ceph: reject export_targets ranks >= CEPH_MAX_MDS in mdsmap decode

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

ceph: reject export_targets ranks >= CEPH_MAX_MDS in mdsmap decode

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

0.50% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 42.6% 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

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

Red Hat severity

Important. 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 19:45Z1 MO AGO

Last updated

2026-10-19 08:50Z10 DAYS AGO

Reserved

2026-09-11

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-787Out-of-bounds WriteBase

Data version

5.2

Document digest

e1768ca870038226ced6f5ad28dfedb95d4a7ee40f8ad32fc108b10fae1cd9ae

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxd517b3983dd3106ca92d6c5d0d09415a4a09481c to < 3740c88ca9cb2210a8dbdd55ea4cec119fbe86fe, d517b3983dd3106ca92d6c5d0d09415a4a09481c to < 8c823bbab3c24e657469a84db96902ba82d4e8bb, d517b3983dd3106ca92d6c5d0d09415a4a09481c to < c4addccd05bacbef2144b4db14853d0308a218ac, d517b3983dd3106ca92d6c5d0d09415a4a09481c to < 736adee11af36e407ed902264f8b2fb5cf94b62f, d517b3983dd3106ca92d6c5d0d09415a4a09481c to < 4d298880f82c42383b36946bafde7ccf4d804c9b, d517b3983dd3106ca92d6c5d0d09415a4a09481c to < 96c3f5fbb0d5386e7111426f047f98cec4586674, d517b3983dd3106ca92d6c5d0d09415a4a09481c to < aedc9053d909508a5f56c3f49f885fc030df4730, 5.15—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/3740c88ca9cb2210a8dbdd55ea4cec119fbe86fe
git.kernel.orghttps://git.kernel.org/stable/c/8c823bbab3c24e657469a84db96902ba82d4e8bb
git.kernel.orghttps://git.kernel.org/stable/c/c4addccd05bacbef2144b4db14853d0308a218ac
git.kernel.orghttps://git.kernel.org/stable/c/736adee11af36e407ed902264f8b2fb5cf94b62f
git.kernel.orghttps://git.kernel.org/stable/c/4d298880f82c42383b36946bafde7ccf4d804c9b
git.kernel.orghttps://git.kernel.org/stable/c/96c3f5fbb0d5386e7111426f047f98cec4586674
git.kernel.orghttps://git.kernel.org/stable/c/aedc9053d909508a5f56c3f49f885fc030df4730

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.