btrfs: send: check for inline extents in range_is_hole_in_parent()

Summary

In the Linux kernel, the following vulnerability has been resolved: btrfs: send: check for inline extents in range_is_hole_in_parent() Before accessing the disk_bytenr field of a file extent item we need to check if we are dealing with an inline extent. This is because for inline extents their data starts at the offset of the disk_bytenr field. So accessing the disk_bytenr means we are accessing inline data or in case the inline data is less than 8 bytes we can actually cause an invalid memory access if this inline extent item is the first item in the leaf or access metadata from other items.

Timeline

1. Feb 14, 2026, 3:36 PM UTCCVE published
2. Oct 15, 2026, 1:13 AM UTCRecord last updated

Affected versions

• Linux Linux

  From 82bfb2e7b645c8f228dc3b6d3b27b0b10125ca4f · fixed in 901e581bfc44d181f7d9c3f11880dac3e89deb2e; From 82bfb2e7b645c8f228dc3b6d3b27b0b10125ca4f · fixed in d948055bd46a9c14d1d4217aed65c5c258c32903; From 82bfb2e7b645c8f228dc3b6d3b27b0b10125ca4f · fixed in f2dc6ab3a14c2d2eb0b14783427eb9b03bf631c9; From 82bfb2e7b645c8f228dc3b6d3b27b0b10125ca4f · fixed in db00636643e66898d79f2530ac9c56ebd5eca369; From 82bfb2e7b645c8f228dc3b6d3b27b0b10125ca4f · fixed in 39f83f10772310ba4a77f2b5256aaf36994ef7e8; From 82bfb2e7b645c8f228dc3b6d3b27b0b10125ca4f · fixed in 08b096c1372cd69627f4f559fb47c9fb67a52b39

• Linux Linux

  4.11

• KernelLinux

  From 4.11.0 · fixed in 5.15.209; From 5.16.0 · fixed in 6.1.167; From 6.2.0 · fixed in 6.6.122; From 6.7.0 · fixed in 6.12.67; From 6.13.0 · fixed in 6.18.7

References 6