In the Linux kernel, the following vulnerability has been resolved:

tracing: Check operator stack capacity before pushing

predicate_parse() uses the first operator stack entry before processing
any opening parentheses. A push then increments top before writing.
The existing check still permits that write when top already points to
the last allocated entry, which can access beyond the operator stack.

Reject the push when top reaches the last allocated entry.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
39f7c41c908bc82947ce47cdd021520ff486c53f affected < a866a8a753922cdf7710b8eb3f686dc0efc06505
39f7c41c908bc82947ce47cdd021520ff486c53f affected < 75e894f92417390f0ef44fd350f2d3634c784876
39f7c41c908bc82947ce47cdd021520ff486c53f affected < c47a7b11bcb3d45e29723afcf6336866476b1d08
Linux Linux affected
Version Status Constraints
6.6 affected —
0 unaffected < 6.6
6.18.59 unaffected ≤ 6.18.*
7.2.13 unaffected ≤ 7.2.*
7.3 unaffected ≤ *

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References
Link Providers
https://git.kernel.org/stable/c/75e894f92417390f0ef44fd350f2d3634c784876 cve-icon cve-icon
https://git.kernel.org/stable/c/a866a8a753922cdf7710b8eb3f686dc0efc06505 cve-icon cve-icon
https://git.kernel.org/stable/c/c47a7b11bcb3d45e29723afcf6336866476b1d08 cve-icon cve-icon
History

Wed, 28 Oct 2026 12:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-120

Wed, 28 Oct 2026 10:45:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: tracing: Check operator stack capacity before pushing predicate_parse() uses the first operator stack entry before processing any opening parentheses. A push then increments top before writing. The existing check still permits that write when top already points to the last allocated entry, which can access beyond the operator stack. Reject the push when top reaches the last allocated entry.
Title tracing: Check operator stack capacity before pushing
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-10-28T10:34:53.839Z

Reserved: 2026-09-25T10:25:14.395Z

Link: CVE-2026-99142

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-28T11:17:34.207

Modified: 2026-10-28T11:17:34.207

Link: CVE-2026-99142

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-28T11:45:09Z

Weaknesses