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

ntfs3: cap RESTART_TABLE free-chain walker at rt->used

A crafted NTFS3 disk image triggers an in-kernel infinite loop at
mount time, hanging the mounting thread and firing the soft-lockup
watchdog within ~22s on multi-CPU hosts (panic with
kernel.softlockup_panic=1).  The bug is reachable from desktop USB
auto-mount on distributions where udisks2 routes the NTFS signature
to the in-tree ntfs3 driver (Arch family and an increasing fraction
of Fedora / openSUSE / RHEL deployments); CAP_SYS_ADMIN-class manual
mount elsewhere.

check_rstbl()'s second walker iterates the free-entry singly-linked
list headed by rt->first_free with no upper bound on iteration count:

  for (off = ff; off;) {
      if (off == RESTART_ENTRY_ALLOCATED)
          return false;
      off = le32_to_cpu(*(__le32 *)Add2Ptr(rt, off));
      if (off > ts - sizeof(__le32))
          return false;
  }

The existing guards cover three exits: end-of-list (off == 0), the
in-use marker (off == RESTART_ENTRY_ALLOCATED), and out-of-bounds
(off > ts - sizeof(__le32)).  None of the three prevents an
in-bounds cycle.

A crafted on-disk RESTART_TABLE whose free chain contains a
self-loop or A->B->A cycle whose offsets satisfy:

  - in range [sizeof(struct RESTART_TABLE), ts - sizeof(__le32)]
  - (off - sizeof(struct RESTART_TABLE)) % rsize == 0

passes all existing guards and spins the mount-time thread forever.
Reproduced in UML by hand-forging a 2 MB NTFS3 image whose journal
RESTART_TABLE first_free = 0x18 and whose entry at offset 0x18
stores 0x18 as its next pointer; mount of the forged image with
the in-tree ntfs3 driver never returns.

Bound the walker by rt->used.  Each entry on a legitimate free
chain is unique, and the total slot count is ne = le16_to_cpu
(rt->used).  A traversal that visits more than ne slots is by
construction malformed; reject it as a corrupt RESTART_TABLE.

After this patch, mount of the forged image returns with -EINVAL
and a log_replay failure message, and mkntfs-produced legitimate
images mount cleanly (verified in the same UML harness).

https://git.kernel.org/stable/c/0fad25687d4d3fa1fdd313d31b9cb5817c425029

https://git.kernel.org/stable/c/29b86dbe88cbbef53bb9aaec2e279359f8c450f8

https://git.kernel.org/stable/c/7972df425687daa70d971fe6ed415e78683133dd

https://git.kernel.org/stable/c/7ac4c86915c24c208a0f0611b71d9676686fe756

https://git.kernel.org/stable/c/8128bec895075253c779d67afdc90ae513265fca

https://git.kernel.org/stable/c/9611f644302c07d21bc8af97e3e06a3d30064253

https://git.kernel.org/stable/c/d313416280d41bea272f02a6034dfa88008692a0

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["fs/ntfs3/fslog.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"b46acd6a6a627d876898e1c84d3f84902264b445","lessThan":"8128bec895075253c779d67afdc90ae513265fca","versionType":"git","status":"affected"},{"version":"b46acd6a6a627d876898e1c84d3f84902264b445","lessThan":"7972df425687daa70d971fe6ed415e78683133dd","versionType":"git","status":"affected"},{"version":"b46acd6a6a627d876898e1c84d3f84902264b445","lessThan":"7ac4c86915c24c208a0f0611b71d9676686fe756","versionType":"git","status":"affected"},{"version":"b46acd6a6a627d876898e1c84d3f84902264b445","lessThan":"29b86dbe88cbbef53bb9aaec2e279359f8c450f8","versionType":"git","status":"affected"},{"version":"b46acd6a6a627d876898e1c84d3f84902264b445","lessThan":"0fad25687d4d3fa1fdd313d31b9cb5817c425029","versionType":"git","status":"affected"},{"version":"b46acd6a6a627d876898e1c84d3f84902264b445","lessThan":"d313416280d41bea272f02a6034dfa88008692a0","versionType":"git","status":"affected"},{"version":"b46acd6a6a627d876898e1c84d3f84902264b445","lessThan":"9611f644302c07d21bc8af97e3e06a3d30064253","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["fs/ntfs3/fslog.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.15","status":"affected"},{"version":"0","lessThan":"5.15","versionType":"semver","status":"unaffected"},{"version":"5.15.212","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.97","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.40","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.5","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc1","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]