01 Record

CVE-2026-89567

jbd2: bound shrinker scans by examined checkpoint buffers

UnratedPUBLISHEDCNA: Linux

CNA base scoreUnratedNo CNA CVSS vector

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02 Description

jbd2: bound shrinker scans by examined checkpoint buffers

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: 0.20% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 10.5% of scored records. A rank, not a probability.
NVD base score: The NVD has published no score for this record
NVD CVSS vector: No NVD score to derive
NVD analysis status: Received. NVD last modified this record on 2026-10-21.
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

2026-10-21 12:47Z7 DAYS AGO

Reserved

2026-09-11

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')Base

Data version

5.2

Document digest

1676a74f81d29d1d2b0df214caac8e145785076f43dbe8086624fe06158363cd

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxb98dba273a0e47dbfade89c9af73c5b012a4eabb to < 6b5366ba63a58819396045ab146bd37ff9e503c6, b98dba273a0e47dbfade89c9af73c5b012a4eabb to < edf5fcd0469b7467bd5b37a79502c8d9c3257dbb, b98dba273a0e47dbfade89c9af73c5b012a4eabb to < 71c6b872c746465fa4b5def239cb296173ca8216, b98dba273a0e47dbfade89c9af73c5b012a4eabb to < c2c0fb364685b8996c357d3b050394959b29d6e0, b98dba273a0e47dbfade89c9af73c5b012a4eabb to < 15cb16496446b94e67f7abcb049b8e2c75cd3d02, 9c31bb2684f8035beca0275349d19d679b679ffb, 5fda50e262e65bd553ff777c4b280afd1495a18b, 557fda9ed70ebf8eda2620ba3d746215285a1303, 5.15.129 to < 5.16, 6.1.50 to < 6.2, 6.4.13 to < 6.5, 6.5—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/6b5366ba63a58819396045ab146bd37ff9e503c6
git.kernel.orghttps://git.kernel.org/stable/c/edf5fcd0469b7467bd5b37a79502c8d9c3257dbb
git.kernel.orghttps://git.kernel.org/stable/c/71c6b872c746465fa4b5def239cb296173ca8216
git.kernel.orghttps://git.kernel.org/stable/c/c2c0fb364685b8996c357d3b050394959b29d6e0
git.kernel.orghttps://git.kernel.org/stable/c/15cb16496446b94e67f7abcb049b8e2c75cd3d02

07 Fixed in

Debian 12

linux
No fix yet
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.