CVE-2026-89926
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 length check __import_wp_info()
In the Linux kernel, the following vulnerability has been resolved: KVM: s390: Fix length check __import_wp_info() struct kvm_hw_breakpoint::len is a __u64 that is fully controlled by user space. This is then assigned to wp_info->len, which is an int. The bounds check is done on the truncated value while the allocation uses the untruncated one: wp_info->len = bp_data->len; [...] if (wp_info->len < 0 || wp_info->len > MAX_WP_SIZE) return -EINVAL; wp_info->old_data = kmalloc(bp_data->len, GFP_KERNEL_ACCOUNT); Use the validated value for the allocation as intended. Without this fix userspace can trigger >4GB allocations which will fail and result in a WARN due to MAX_PAGE_ORDER.
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) |
|---|---|---|---|---|---|
| 27291e2165b6de70c476b7b675308113edd69a60 | affected | git | aef540194effd768bed0bd2e6a74fe135a3d7c3a | Unavailable | None listed |
| 27291e2165b6de70c476b7b675308113edd69a60 | affected | git | 71153d3262517e1c02c3a66aa5094f279b2d1454 | Unavailable | None listed |
| 27291e2165b6de70c476b7b675308113edd69a60 | affected | git | fec89d327d9b2b669b5bbdac209386c6317c3722 | Unavailable | None listed |
| 27291e2165b6de70c476b7b675308113edd69a60 | affected | git | b94ab9caa5d72c78226121cccff5e33f946da900 | Unavailable | None listed |
| 27291e2165b6de70c476b7b675308113edd69a60 | affected | git | beb9c55af609c4c7308259d7191688c75a4e3d4a | Unavailable | None listed |
| 27291e2165b6de70c476b7b675308113edd69a60 | affected | git | 3fe801db90bdeefb0bbdda42d832846b53f64f8a | Unavailable | None listed |
| 27291e2165b6de70c476b7b675308113edd69a60 | affected | git | 4c07680a467e2f7697245bcd11691bffb2a6f0ed | 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) |
|---|---|---|---|---|---|
| 3.16 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.16 | Unavailable | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.110 | 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 |