CVE-2026-98373
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
mm/hugetlb: preserve mremap address delta when skipping page tables
In the Linux kernel, the following vulnerability has been resolved: mm/hugetlb: preserve mremap address delta when skipping page tables move_hugetlb_page_tables() optimizes mremap() by advancing to the last entry in the page table when the source page table does not exist, either initially or after unsharing a PMD table. The common loop increment then steps to the first entry in the next page table. However, the code advances both the source and destination addresses to the last entries in their respective page tables, which is wrong. The destination address must be advanced only by the same amount as the source address. If the source and destination offsets within their page tables differ, the destination address can be advanced too far, causing follow-up issues. Fix this by advancing the destination address by the source advance distance. With a reproducer, we were able to trigger a kernel panic on x86-64. With this fix in place, we can no longer reproduce the issue.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| e95a9851787bbb3cd4deb40fe8bab03f731852d1 | affected | git | cf73ef2a761df9329af116c905a7a94b317921e4 | Unavailable | None listed |
| e95a9851787bbb3cd4deb40fe8bab03f731852d1 | affected | git | 7a96b0f657c8d799ea5b8e02fc9ec7cca0e6e7ff | Unavailable | None listed |
| e95a9851787bbb3cd4deb40fe8bab03f731852d1 | affected | git | 850cc4a84b36a0062dcd0391acd2450e20ab0767 | Unavailable | None listed |
| e95a9851787bbb3cd4deb40fe8bab03f731852d1 | affected | git | 480a39b0a12c977ed6e755f3d12a23424c57d11f | Unavailable | None listed |
| e95a9851787bbb3cd4deb40fe8bab03f731852d1 | affected | git | 9bdad082d44bdcf93716973dcba6be77e8a06e7b | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 6.0 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.0 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.112 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.55 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.9 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |