CVE-2026-97487 json
jfs: handle set_blocksize failures
published 2026-09-24 45 d ago modified 2026-10-03 36 d ago also EUVD-2026-86085
- cvss
- —
- not scored
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 6%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Linux Linux 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2
- linux Debian 12 6.1.190-1
- linux Debian 13 6.12.111-1
- linux Debian 14 7.2.6-1
- linux-6.12 Debian 12 6.12.111-1~deb12u1
debian advisories DEBIAN-CVE-2026-97487
- linux Ubuntu 22.04 LTS 5.15.0-202.212
- linux Ubuntu 26.04 LTS 7.0.0-42.42
- linux-aws Ubuntu 22.04 LTS 5.15.0-1119.126
- linux-aws Ubuntu 26.04 LTS 7.0.0-1016.17
- linux-gcp Ubuntu 22.04 LTS 5.15.0-1120.130
- linux-gcp Ubuntu 26.04 LTS 7.0.0-1016.18
- linux-gke Ubuntu 22.04 LTS 5.15.0-1115.121
- linux-ibm Ubuntu 22.04 LTS 5.15.0-1113.117
ubuntu advisories UBUNTU-CVE-2026-97487
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- git.kernel.org/stable/c/e2712fa5c02cd1b3e40d45bc8ce581f3c67bf4b4 commit
- git.kernel.org/stable/c/deb9400a38849e03210c9169b777e89e74debe96 commit
- git.kernel.org/stable/c/a0eaa3f4b6dcc829228752f6255f0e45cc94b273 commit
- git.kernel.org/stable/c/87d6852f06c5a29f757f7b7ad1423e4cbd0f2cad commit
- git.kernel.org/stable/c/a0ac22af8acca6ea6c57aff72662086cb3243b1c commit
- git.kernel.org/stable/c/153374ee67a458c77b5755d3cc57fbdc639d327e commit
- git.kernel.org/stable/c/05107f5602751fcfd3d108c1f579eb45aabead52 commit
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-97487 updated cvss 5.5
kernel: jfs: handle set_blocksize failures
-
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 moreaffected: workaround, no fix planned “Out of support scope”
-
Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more Red Hat Enterprise Linux 10 kernel Red Hat OpenShift Container Platform 4 openshift/ose-rhel-coreos-8, openshift/ose-rhel-coreos-9 Red Hat OpenShift Container Platform 5 openshift/ose-rhel-coreos-9not affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).
Affected products
- Linux Linux
Classification
- Technology feeds
References
- git.kernel.org /stable/c/e2712fa5c02cd1b3e40d45bc8ce581f3c67bf4b4
- git.kernel.org /stable/c/deb9400a38849e03210c9169b777e89e74debe96
- git.kernel.org /stable/c/a0eaa3f4b6dcc829228752f6255f0e45cc94b273
- git.kernel.org /stable/c/87d6852f06c5a29f757f7b7ad1423e4cbd0f2cad
- git.kernel.org /stable/c/a0ac22af8acca6ea6c57aff72662086cb3243b1c
- git.kernel.org /stable/c/153374ee67a458c77b5755d3cc57fbdc639d327e
- git.kernel.org /stable/c/05107f5602751fcfd3d108c1f579eb45aabead52
Sources
- CVE List CVE-2026-97487
- NVD CVE-2026-97487
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.