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CVE-2026-97487· NVD / CVE Program· CNA Linux

jfs: handle set_blocksize failures

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Fixed version: Linux Linux 05107f5602751fcfd3d108c1f579eb45aabead52, 153374ee67a458c77b5755d3cc57fbdc639d327e, 87d6852f06c5a29f757f7b7ad1423e4cbd0f2cad; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes.

Low priority for now. Upgrade to Linux Linux 05107f5602751fcfd3d108c1f579eb45aabead52, 153374ee67a458c77b5755d3cc57fbdc639d327e, 87d6852f06c5a29f757f7b7ad1423e4cbd0f2cad; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 Release Notes or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: jfs: handle set_blocksize failures jfs uses buffer_heads, which don't handle block size > PAGE_SIZE well. Without this, mounting we will hit the BUG_ON(offset >= folio_size(folio)); in folio_set_bh on the first __bread_gfp call.

—No exploit Fix available
Published
Sep 24, 2026
Updated
Oct 3, 2026
EPSS
0.1% · 6th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 2.6.12affected
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before e2712fa5c02cd1b3e40d45bc8ce581f3c67bf4b4affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before deb9400a38849e03210c9169b777e89e74debe96affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before a0eaa3f4b6dcc829228752f6255f0e45cc94b273affected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 87d6852f06c5a29f757f7b7ad1423e4cbd0f2cadaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before a0ac22af8acca6ea6c57aff72662086cb3243b1caffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 153374ee67a458c77b5755d3cc57fbdc639d327eaffected · git
    • 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and later · before 05107f5602751fcfd3d108c1f579eb45aabead52affected · git
    • before 2.6.12not affected · semver
    • 5.10.271 and later · up to and including 5.10.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.190-16.1.190-1
Debian:12linux-6.12before 6.12.111-1~deb12u16.12.111-1~deb12u1
Debian:13linuxbefore 6.12.111-16.12.111-1
Debian:14linuxbefore 7.2.6-17.2.6-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2026-97485Sep 24, 2026 · omfs: handle set_blocksize failures
    0Monitor
  • ← EarlierCVE-2026-97486Sep 24, 2026 · hpfs: handle set_blocksize failures
    0Monitor
  • Later →CVE-2026-97488Sep 24, 2026 · qnx4: handle set_blocksize failures
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux05107f5602751fcfd3d108c1f579eb45aabead52Vendor (CNA)
Linux Linux153374ee67a458c77b5755d3cc57fbdc639d327eVendor (CNA)
Linux Linux87d6852f06c5a29f757f7b7ad1423e4cbd0f2cadVendor (CNA)
Linux Linuxa0ac22af8acca6ea6c57aff72662086cb3243b1cVendor (CNA)
Linux Linuxa0eaa3f4b6dcc829228752f6255f0e45cc94b273Vendor (CNA)
Linux Linuxdeb9400a38849e03210c9169b777e89e74debe96Vendor (CNA)
Linux Linuxe2712fa5c02cd1b3e40d45bc8ce581f3c67bf4b4Vendor (CNA)
azl3 kernel 6.6.157.1-1 on Azure Linux 3.0Release NotesMicrosoft (MSRC)
debian:linux6.1.190-1 · Debian:12Package registry (OSV)
debian:linux6.12.111-1 · Debian:13Package registry (OSV)
debian:linux-6.126.12.111-1~deb12u1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records