Bug 2532456 (CVE-2026-89716) - CVE-2026-89716 kernel: zram: validate deflate params
Summary: CVE-2026-89716 kernel: zram: validate deflate params
Keywords:
Status: NEW
Alias: CVE-2026-89716
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-11 23:20 UTC by OSIDB Bzimport
Modified: 2026-09-21 14:52 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-09-11 23:20:17 UTC 
In the Linux kernel, the following vulnerability has been resolved:

zram: validate deflate params

We must validate user-supplied deflate winbits before we pass it to
zlib_deflate_workspacesize(), which triggers BUG_ON() if winbits value is
outside of valid ranges.
Comment 1 Keith Grant 2026-09-21 14:40:28 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89716.mbox
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