Medium [CVE-2026-89582] Double Free Vulnerability in Linux Kernel leading to Denial of Service or Code Execution
This medium-severity Red Hat Linux advisory covers CVE-2026-89582.
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Summary
A flaw was found in the `bnx2x` component of the Linux kernel. This flaw occurs due to a double free vulnerability within the `bnx2x_init_firmware()` function's error handling path.
Memory pointers are freed without being set to NULL, allowing the `bnx2x_release_firmware()` cleanup function to attempt freeing the same memory a second time. This issue could lead to system instability, a denial of service (DoS), or potentially arbitrary code execution.
Red Hat severity: Important — CVSS 4.1 (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-1341.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 18 minutes ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 18 minutes ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 18 minutes ago·verify at source
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