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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-68324

iommu/intel: Fix out-of-bounds memset in dmar_latency_disable()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/intel: Fix out-of-bounds memset in dmar_latency_disable() dmar_latency_disable() intends to zero out only the single latency_statistic entry for the given type, but the memset size was computed as sizeof(*lstat) * DMAR_LATENCY_NUM, which clears the entire array starting from &lstat[type]. When type > 0, this writes beyond the end of the allocated array, corrupting adjacent memory. Fix by using sizeof(*lstat) to clear only the target entry.

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

  • 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to < 80f3605991461679c298ea2045c350ee3cf36de3affected
  • 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to < 104d89cf5b01cb66ff975d91ed42f61b3904df53affected
  • 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to < 3078d82e7fe9048a2b90a992e71af7cd7ef881faaffected
  • 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to < 866a35735e56b9dc81cbc33899255134adf6d8b3affected
  • 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to < d06fea9b85f038690f55e72fe0c45e113715a85aaffected
  • 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to < 0e28ca1c3204b51068579defc904a0dfba5e5c57affected
  • 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to < 754f8efe45f87e3a9c6871b645b2f9d46d1b407baffected

Linux Linux

Default version status: affected

  • 5.14affected
  • 0 to < 5.14unaffected
  • 5.15.216 to ≤ 5.15.*unaffected
  • 6.1.183 to ≤ 6.1.*unaffected
  • 6.6.148 to ≤ 6.6.*unaffected
  • 6.12.101 to ≤ 6.12.*unaffected
  • 6.18.42 to ≤ 6.18.*unaffected
  • 7.1.6 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References