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

fs/ntfs3: fix missing run load for vcn0 in attr_data_get_block_locked()

When a compressed or sparse attribute has its clusters frame-aligned,
vcn is rounded down to the frame start using cmask, which can result
in vcn != vcn0. In this case, vcn and vcn0 may reside in different
attribute segments.

The code already handles the case where vcn is in a different segment
by loading its runs before allocation. However, it fails to load runs
for vcn0 when vcn0 resides in a different segment than vcn. This causes
run_lookup_entry() to return SPARSE_LCN for vcn0 since its segment was
never loaded into the in-memory run list, triggering the WARN_ON(1).

Fix this by adding a missing check for vcn0 after the existing vcn
segment check. If vcn0 falls outside the current segment range
[svcn, evcn1), find and load the attribute segment containing vcn0
before performing the run lookup.

The following scenario triggers the bug:
  attr_data_get_block_locked()
    vcn = vcn0 & cmask        <- vcn != vcn0 after frame alignment
    load runs for vcn segment <- vcn0 segment not loaded!
    attr_allocate_clusters()  <- allocation succeeds
    run_lookup_entry(vcn0)    <- vcn0 not in run -> SPARSE_LCN
    WARN_ON(1)                <- bug fires here!

https://git.kernel.org/stable/c/2b4ae1ce613ade8a7e118fba4a5a77cd23e97e54

https://git.kernel.org/stable/c/d7ea8495fd307b58f8867acd81a1b40075b1d3ba

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["fs/ntfs3/attrib.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"c380b52f6c5702cc4bdda5e6d456d6c19a201a0b","lessThan":"2b4ae1ce613ade8a7e118fba4a5a77cd23e97e54","versionType":"git","status":"affected"},{"version":"c380b52f6c5702cc4bdda5e6d456d6c19a201a0b","lessThan":"d7ea8495fd307b58f8867acd81a1b40075b1d3ba","versionType":"git","status":"affected"},{"version":"406a037d93b769bca248476bd14bbe548dc1ec35","versionType":"git","status":"affected"},{"version":"6.1.132","lessThan":"6.2","versionType":"semver","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["fs/ntfs3/attrib.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"6.2","status":"affected"},{"version":"0","lessThan":"6.2","versionType":"semver","status":"unaffected"},{"version":"7.0.10","lessThanOrEqual":"7.0.*","versionType":"semver","status":"unaffected"},{"version":"7.1","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]