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CVE PROGRAM SOURCE RECORD7.1 High

CVE-2024-50193

x86/entry_32: Clear CPU buffers after register restore in NMI return

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: x86/entry_32: Clear CPU buffers after register restore in NMI return CPU buffers are currently cleared after call to exc_nmi, but before register state is restored. This may be okay for MDS mitigation but not for RDFS. Because RDFS mitigation requires CPU buffers to be cleared when registers don't have any sensitive data. Move CLEAR_CPU_BUFFERS after RESTORE_ALL_NMI.

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

  • 50f021f0b985629accf10481a6e89af8b9700583 to < 6f44a5fc15b5cece0785bc07453db77d99b0a6deaffected
  • d54de9f2a127090f2017184e8257795b487d5312 to < b6400eb0b347821efc57760221f8fb6d63b9548aaffected
  • 2e3087505ddb8ba2d3d4c81306cca11e868fcdb9 to < 43778de19d2ef129636815274644b9c16e78c66baffected
  • ca13d8cd8dac25558da4ee8df4dc70e8e7f9d762 to < 227358e89703c344008119be7e8ffa3fdb5b92deaffected
  • a0e2dab44d22b913b4c228c8b52b2a104434b0b3 to < 64adf22c4bc73ede920baca5defefb70f190cdbcaffected
  • a0e2dab44d22b913b4c228c8b52b2a104434b0b3 to < 48a2440d0f20c826b884e04377ccc1e4696c84e9affected
  • 51eca9f1fd047b500137d021f882d93f03280118affected
  • 5.10.215 to < 5.10.228affected
  • 5.15.154 to < 5.15.169affected
  • 6.1.81 to < 6.1.114affected
  • 6.6.21 to < 6.6.58affected
  • 6.7.9 to < 6.8affected

Linux Linux

Default version status: affected

  • 6.8affected
  • 0 to < 6.8unaffected
  • 5.10.228 to ≤ 5.10.*unaffected
  • 5.15.169 to ≤ 5.15.*unaffected
  • 6.1.114 to ≤ 6.1.*unaffected
  • 6.6.58 to ≤ 6.6.*unaffected
  • 6.11.5 to ≤ 6.11.*unaffected
  • 6.12 to ≤ *unaffected

References