CVE-2026-89920
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)
KVM: s390: Fix memory corruption by not reinjecting CK machine checks
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix memory corruption by not reinjecting CK machine checks Channel-subsystem damage machine checks are for the host channel subsystem. The guest channel subsystem is emulated in the userspace VMM. There is no point in forwarding such machine checks into the guest. This also simplifies the machine check reinjection and avoids kfree of a stack variable as reported by sashiko. There might be still machine checks that have the ck bit set with another bit (like instruction damage), mask out the CK bit in s390_backup_mcck_info(), like the CP and ED bits already are.
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) |
|---|---|---|---|---|---|
| 4d62fcc0b692e3b4058d7d138114c27cd8b011f7 | affected | git | 5c63e2ed840c85e27172ab78e7db3ac77fba281b | Unavailable | None listed |
| 4d62fcc0b692e3b4058d7d138114c27cd8b011f7 | affected | git | b7631982fb65dd355acd18e62b384bc8125e9c44 | Unavailable | None listed |
| 4d62fcc0b692e3b4058d7d138114c27cd8b011f7 | affected | git | 6ee52d3af2a1bf70349cf3f860933c8d221e229a | Unavailable | None listed |
| 4d62fcc0b692e3b4058d7d138114c27cd8b011f7 | affected | git | 7077ec953996acc04b49d1dfc43df1c1a2a74395 | Unavailable | None listed |
| 4d62fcc0b692e3b4058d7d138114c27cd8b011f7 | affected | git | 546dde823a36d7283dcf46127c2f3d093443860f | 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) |
|---|---|---|---|---|---|
| 4.13 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.13 | Unavailable | None listed |
| 6.6.160 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.114 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.51 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.5 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |