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CVE-2026-99142

HIGHCVSS 7.1/10EPSS 0.17%

Last modified

CVE-2026-99142 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.1/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS Probability
0.17%

6.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 39f7c41c908bc82947ce47cdd021520ff486c53f, < c43c41ec62ca54ae145aa4912c6692a26d625734; >= 39f7c41c908bc82947ce47cdd021520ff486c53f, < d6f0006f194db49c54117ae22146421da5a2ca59; >= 39f7c41c908bc82947ce47cdd021520ff486c53f, < a866a8a753922cdf7710b8eb3f686dc0efc06505; >= 39f7c41c908bc82947ce47cdd021520ff486c53f, < 75e894f92417390f0ef44fd350f2d3634c784876; >= 39f7c41c908bc82947ce47cdd021520ff486c53f, < c47a7b11bcb3d45e29723afcf6336866476b1d08
LinuxLinux6.6

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-99142?
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.
How severe is CVE-2026-99142?
CVE-2026-99142 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-99142?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST