Bug 2562723 (CVE-2026-99143) - CVE-2026-99143 kernel: kernel: Denial of Service via out-of-bounds access in tracing predicate parsing
Summary: CVE-2026-99143 kernel: kernel: Denial of Service via out-of-bounds access in ...
Keywords:
Status: NEW
Alias: CVE-2026-99143
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: 2026-10-28 10:57 UTC by OSIDB Bzimport
Modified: 2026-10-29 17:40 UTC (History)
17 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-10-28 10:57:27 UTC
In the Linux kernel, the following vulnerability has been resolved:

tracing: Keep the predicate limit separate from program capacity

predicate_parse() adds two to nr_preds to reserve the terminal TRUE
and FALSE entries. It also uses that increased value as the limit for
parsed predicates. If the initial count is smaller than the number
actually parsed, the program can fill the allocation and subsequent
accesses can go past its end.

Keep nr_preds as the predicate limit and use a separate value for the
allocation size. This leaves space for both terminal entries and a
zeroed entry when parsing stops at the limit.


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