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CVE-2026-98879

UnknownEPSS 0.18%

Last modified

CVE-2026-98879 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.18%

7.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 6db7f0ba365786304558db6a3d52013ae176e03e; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 61f277bf35f533b602984f0e55900111fe52f31a; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < cebde6d88e34396c29f2f001d90e921677cc17d6; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 28d1f6aa14f5924e36602b7a31c9141d34de0b9c; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 9c97e3b1152d3092581745189f5d2f04c6404ef9; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 9584ab6283721e5aab485c79bd06c2f78d89e55c; >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 25ef4c4d9f0e96fb89c0ae0d7127c3f12a31bc32
LinuxLinux2.6.12

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-98879?
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.
How severe is CVE-2026-98879?
Severity scoring for CVE-2026-98879 is pending analysis. The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-98879?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST