Riskcovery

CVE-2024-42265

protect the fetch of ->fd[fd] in do_dup2() from mispredictions

State
Published
Severity
Not scored
Published
Aug 17, 2024
Updated
Oct 15, 2026
Reserved
Jul 30, 2024

Read the record on cve.org

Description

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

protect the fetch of ->fd[fd] in do_dup2() from mispredictions

both callers have verified that fd is not greater than ->max_fds; however, misprediction might end up with tofree = fdt->fd[fd]; being speculatively executed. That's wrong for the same reasons why it's wrong in close_fd()/file_close_fd_locked(); the same solution applies - array_index_nospec(fd, fdt->max_fds) could differ from fd only in case of speculative execution on mispredicted path.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 8280d16172243702ed43432f826ca6130edb4086 to before ed42e8ff509d2a61c6642d1825032072dab79f26Affected
  • 8280d16172243702ed43432f826ca6130edb4086 to before 41a6c31df77bd8e050136b0a200b537da9e1084aAffected
  • 8280d16172243702ed43432f826ca6130edb4086 to before 08775b3d6ed117cf4518754ec7300ee42b6a5368Affected
  • 8280d16172243702ed43432f826ca6130edb4086 to before 3f480493550b6a23d3a65d095d6569d4a7f56a0fAffected
  • 8280d16172243702ed43432f826ca6130edb4086 to before 5db999fff545b924b24c9afd368ef5c17279b176Affected
  • 8280d16172243702ed43432f826ca6130edb4086 to before da72e783afd27d9f487836b2e6738146c0edd149Affected
  • 8280d16172243702ed43432f826ca6130edb4086 to before 1171ceccabfd596ca370c5d2cbb47d110c3f2fe1Affected
  • 8280d16172243702ed43432f826ca6130edb4086 to before 8aa37bde1a7b645816cda8b80df4753ecf172bf1Affected
LinuxLinux
  • 3.7Affected
  • before 3.7Not affected
  • 4.19.320 through 4.19.*Not affected
  • 5.4.282 through 5.4.*Not affected
  • 5.10.224 through 5.10.*Not affected
  • 5.15.165 through 5.15.*Not affected
  • 6.1.104 through 6.1.*Not affected
  • 6.6.45 through 6.6.*Not affected
  • 6.10.4 through 6.10.*Not affected
  • 6.11 and laterNot affected

References

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