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CVE-2026-97485

Linux: omfs: handle set_blocksize failures

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 6% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in120e0db84a69f18e51ba9ae2d036df3a052a33e1Also 29186cd17bb5f501a6ae831dac4fabf637879982, 61ffc31cd8642d7a950b6831720629c8331365f6 and 1 moreCVE List
Published24 Sep 2026Updated 3 Oct 2026CVE List

What fixes it

  • 120e0db84a69f18e51ba9ae2d036df3a052a33e1LinuxCVE List
  • 29186cd17bb5f501a6ae831dac4fabf637879982LinuxCVE List
  • 61ffc31cd8642d7a950b6831720629c8331365f6LinuxCVE List
  • 18c3d6fcb557f920c9143711497625e70153874cLinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

In the Linux kernel, the following vulnerability has been resolved:

omfs: handle set_blocksize failures

omfs 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.

Text from CVE List

Affected versions 16

  • Linuxaffected: 555e3775ced1d05203934fc6529bbf0560dd8733 before a2a3592ebf3920dd6f2b754d2bb7361f54764e84CVE List
  • Linuxaffected: 555e3775ced1d05203934fc6529bbf0560dd8733 before d81e1e9bd1df5948c699cb5aec984acdef5b2681CVE List
  • Linuxaffected: 555e3775ced1d05203934fc6529bbf0560dd8733 before 120e0db84a69f18e51ba9ae2d036df3a052a33e1CVE List
  • Linuxaffected: 555e3775ced1d05203934fc6529bbf0560dd8733 before 29186cd17bb5f501a6ae831dac4fabf637879982CVE List
  • Linuxaffected: 555e3775ced1d05203934fc6529bbf0560dd8733 before 61ffc31cd8642d7a950b6831720629c8331365f6CVE List
  • Linuxaffected: 555e3775ced1d05203934fc6529bbf0560dd8733 before fd4d6593c51253c79be422d6ae42e318250e20a7CVE List
  • Linuxaffected: 555e3775ced1d05203934fc6529bbf0560dd8733 before 18c3d6fcb557f920c9143711497625e70153874cCVE List
  • Linuxaffected: 2.6.27CVE List
  • Linuxunaffected: all versions before 2.6.27CVE List
  • Linuxunaffected: 5.10.271 through 5.10.*CVE List
  • Linuxunaffected: 5.15.222 through 5.15.*CVE List
  • Linuxunaffected: 6.1.189 through 6.1.*CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.111 through 6.12.*CVE List
  • Linuxunaffected: 6.18.53 through 6.18.*CVE List
  • Linuxunaffected: 7.2CVE List

References 7