CVE-2026-89604
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)
efivarfs: Rate limit statfs() handler
In the Linux kernel, the following vulnerability has been resolved: efivarfs: Rate limit statfs() handler Ravi reports that statfs() may be called by unprivileged users on the efivarfs mount point, which may result in a flood of calls to the QueryVariableInfo() runtime service. These calls are disproportionately costly on x86 systems where the variable store is backed by SMM, as each SMM entry requires a rendez-vous of all the CPUs. So rate limit the calls to QueryVariableInfo() at twice per second, and return the most recently obtained value for calls that are elided.
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) |
|---|---|---|---|---|---|
| 115409cbb6a296d73702a62c54c5b1b11cb88b3d | affected | git | 97d71ebee48cd1b29091762b3e5cca4f815dd84c | Unavailable | None listed |
| d86ff3333cb1d5f42d8898fb5fdb304e143c0237 | affected | git | 3cd611c9f1dbcc116c8af5112e3c1783c8cde2ae | Unavailable | None listed |
| d86ff3333cb1d5f42d8898fb5fdb304e143c0237 | affected | git | 8953bdd1b9c0e748d5408d3d0b8e7aeee5c9cd41 | Unavailable | None listed |
| d86ff3333cb1d5f42d8898fb5fdb304e143c0237 | affected | git | 92895a14329cc9533e2a74a265214f690ba3851a | Unavailable | None listed |
| d86ff3333cb1d5f42d8898fb5fdb304e143c0237 | affected | git | 0dbc2e94b81df5a1264068b6ed3605c654b8afcb | Unavailable | None listed |
| d86ff3333cb1d5f42d8898fb5fdb304e143c0237 | affected | git | b2326338dc683e8c1067c0cbf7a47986c4190902 | Unavailable | None listed |
| 6.1.178 | affected | semver | 6.1.188 | 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) |
|---|---|---|---|---|---|
| 6.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 6.5 | Unavailable | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.109 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.50 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.4 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |