Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix incorrect return value after changing leaf in lookup_extent_data_ref() After commit 1618aa3c2e01 ("btrfs: simplify return variables in lookup_extent_data_ref()"), the err and ret variables were merged into a single ret variable. However, when btrfs_next_leaf() returns 0 (success), ret is overwritten from -ENOENT to 0. If the first key in the next leaf does not match (different objectid or type), the function returns 0 instead of -ENOENT, making the caller believe the lookup succeeded when it did not. This can lead to operations on the wrong extent tree item, potentially causing extent tree corruption. Fix this by returning -ENOENT directly when the key does not match, instead of relying on the ret variable.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1618aa3c2e0163f5ac34d514ae89474521910536 to < 4125a194db4a6cf91f619f38788272651cb97dceaffected1618aa3c2e0163f5ac34d514ae89474521910536 to < 450e6a685d0cad95b15f8af152057bd0bf79f50baffected1618aa3c2e0163f5ac34d514ae89474521910536 to < ab1e022379c3c811aa72da8eb0c7507859a1d0f5affected1618aa3c2e0163f5ac34d514ae89474521910536 to < 316fb1b3169efb081d2db910cbbfef445afa03b9affected
Linux Linux
Default version status: affected
6.10affected0 to < 6.10unaffected6.12.82 to ≤ 6.12.*unaffected6.18.23 to ≤ 6.18.*unaffected6.19.13 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected