01 Record

CVE-2026-89533

svcrdma: Fix offset arithmetic in read_chunk_range

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

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02 Description

svcrdma: Fix offset arithmetic in read_chunk_range

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

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 19:44Z1 MO AGO

Last updated

2026-10-19 08:48Z10 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-191Integer Underflow (Wrap or Wraparound)Base

Data version

5.2

Document digest

f98e46951d721d57a47dcd3ccda5a862fdfa95cc39fb533b5a444c2f2ceb43b4

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxd7cc73972661be4a02a1b09f1d9b3283c6c05154 to < 10873311f91db9454e2fadbf9866bc819e0646d9, d7cc73972661be4a02a1b09f1d9b3283c6c05154 to < addbf02dfe3b25e7e38e03bbd4e2a6ed86a14be7, d7cc73972661be4a02a1b09f1d9b3283c6c05154 to < cba8543c18cf42fd80fd63effb6df6ff4f7e73ce, d7cc73972661be4a02a1b09f1d9b3283c6c05154 to < 6ee4dc7476b3abc92ec1d444533a559f33f59561, d7cc73972661be4a02a1b09f1d9b3283c6c05154 to < a46b35f213c2426f5d6a0458a8f7e873fc59cdfd, d7cc73972661be4a02a1b09f1d9b3283c6c05154 to < 4493c96bbd0068fadf69cbae8d13426202e34cdc, d7cc73972661be4a02a1b09f1d9b3283c6c05154 to < 4a44c140cc2f3643a39e258bb0c0ab9d0f494f5e, 5.11—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/10873311f91db9454e2fadbf9866bc819e0646d9
git.kernel.orghttps://git.kernel.org/stable/c/addbf02dfe3b25e7e38e03bbd4e2a6ed86a14be7
git.kernel.orghttps://git.kernel.org/stable/c/cba8543c18cf42fd80fd63effb6df6ff4f7e73ce
git.kernel.orghttps://git.kernel.org/stable/c/6ee4dc7476b3abc92ec1d444533a559f33f59561
git.kernel.orghttps://git.kernel.org/stable/c/a46b35f213c2426f5d6a0458a8f7e873fc59cdfd
git.kernel.orghttps://git.kernel.org/stable/c/4493c96bbd0068fadf69cbae8d13426202e34cdc
git.kernel.orghttps://git.kernel.org/stable/c/4a44c140cc2f3643a39e258bb0c0ab9d0f494f5e

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.