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CVE-2026-98879EUVD-2026-108673

isofs: handle set_blocksize failures

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, and 1 more
None on Exploit-DB, Metasploit or GitHub

Summary

The Linux kernel's ISO 9660 filesystem driver (isofs), used to mount CD and DVD images, is affected. A crafted or unusual disk image with a block size larger than the system page size can trigger a kernel bug check during mount, which can crash the system.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Read the original description

In the Linux kernel, the following vulnerability has been resolved: isofs: handle set_blocksize failures isofs 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.

Timeline

  1. CVE published
  2. First seen by cve.now
  3. Record last updated

Affected versions

  • Linux Linux

    From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 6db7f0ba365786304558db6a3d52013ae176e03e; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 61f277bf35f533b602984f0e55900111fe52f31a; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in cebde6d88e34396c29f2f001d90e921677cc17d6; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 28d1f6aa14f5924e36602b7a31c9141d34de0b9c; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 9c97e3b1152d3092581745189f5d2f04c6404ef9; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 9584ab6283721e5aab485c79bd06c2f78d89e55c; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 25ef4c4d9f0e96fb89c0ae0d7127c3f12a31bc32

  • Linux Linux

    2.6.12

  • KernelLinux

    fixed in 5.10.271; From 5.11.0 · fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.111; From 6.13.0 · fixed in 6.18.53

References 7

git.kernel.org