PatchTheCVECVE-2026-64368: In the Linux kernel, the following vulnerability has been resolved: mm/slab: do not limit zeroing to orig_siz
CVE-2026-64368 is a high-severity flaw (CVSS 8.1) affecting linux kernel. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
In the Linux kernel, the following vulnerability has been resolved: mm/slab: do not limit zeroing to orig_size when only red zoning is enabled When init (zeroing) on allocation is requested, for kmalloc() we generally have to zero the full object size even if a smaller size is requested, in order to provide krealloc()'s __GFP_ZERO guarantees. But if we track the requested size, krealloc() uses that information to do the right thing, so we can
Why this priority
- High severity
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.1 (High) |
| Attack vector | Network (remote) |
| Attack complexity | High |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 64%) |
| CISA exploited list | No |
| Weakness | CWE-665 |
| Published | 2026-07-25 |
| Last modified | 2026-10-19 |
Last updated 2026-10-19 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-64368?
linux kernel: upgrade to 6.6.145, 6.12.96, 6.18.39, 7.1.4. Exact commands for each OS are on this page.
Is CVE-2026-64368 being exploited?
CVE-2026-64368 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-64368 affect?
CVE-2026-64368 affects linux kernel. Severity is high (CVSS 8.1). In the Linux kernel, the following vulnerability has been resolved: mm/slab: do not limit zeroing to orig_size when only red zoning is enabled When init (zeroing) on allocation is requested, for kmalloc() we generally have to zero the ful
How urgent is CVE-2026-64368?
Priority 47/100. High severity; Remotely exploitable, no login, no user action; On your watchlist
Software pages
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