Vulnerability in Linux

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund28 Oct 2026WID-SEC-2026-4224

  Linux Kernel: Multiple vulnerabilities allow an unspecified attack Translated from German

  CVE-2026-99116CVE-2026-99143CVE-2026-99170+113 more CVEs

[ References ]References

• git.kernel.org/stable/c/75e894f92417390f0ef44fd350f2d3634c784876
• git.kernel.org/stable/c/a866a8a753922cdf7710b8eb3f686dc0efc06505
• git.kernel.org/stable/c/c43c41ec62ca54ae145aa4912c6692a26d625734
• git.kernel.org/stable/c/c47a7b11bcb3d45e29723afcf6336866476b1d08
• git.kernel.org/stable/c/d6f0006f194db49c54117ae22146421da5a2ca59