CVE-2026-68324

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

State: Published
Severity: Not scored
Published: Aug 10, 2026
Updated: Aug 19, 2026
Reserved: Jul 30, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before 80f3605991461679c298ea2045c350ee3cf36de3Affected 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before 104d89cf5b01cb66ff975d91ed42f61b3904df53Affected 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before 3078d82e7fe9048a2b90a992e71af7cd7ef881faAffected 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before 866a35735e56b9dc81cbc33899255134adf6d8b3Affected 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before d06fea9b85f038690f55e72fe0c45e113715a85aAffected 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before 0e28ca1c3204b51068579defc904a0dfba5e5c57Affected 55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before 754f8efe45f87e3a9c6871b645b2f9d46d1b407bAffected
LinuxLinux	5.14Affected before 5.14Not affected 5.15.216 through 5.15.Not affected 6.1.183 through 6.1.Not affected 6.6.148 through 6.6.Not affected 6.12.101 through 6.12.Not affected 6.18.42 through 6.18.Not affected 7.1.6 through 7.1.Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before 80f3605991461679c298ea2045c350ee3cf36de3Affected
55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before 104d89cf5b01cb66ff975d91ed42f61b3904df53Affected
55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before 3078d82e7fe9048a2b90a992e71af7cd7ef881faAffected
55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before 866a35735e56b9dc81cbc33899255134adf6d8b3Affected
55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before d06fea9b85f038690f55e72fe0c45e113715a85aAffected
55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before 0e28ca1c3204b51068579defc904a0dfba5e5c57Affected
55ee5e67a59a1b6f388d7a1c7b24022145f47a3e to before 754f8efe45f87e3a9c6871b645b2f9d46d1b407bAffected

LinuxLinux

5.14Affected
before 5.14Not affected
5.15.216 through 5.15.*Not affected
6.1.183 through 6.1.*Not affected
6.6.148 through 6.6.*Not affected
6.12.101 through 6.12.*Not affected
6.18.42 through 6.18.*Not affected
7.1.6 through 7.1.*Not affected
7.2 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.