CVE-2026-74693
net: prestera: validate firmware header length
Description
In the Linux kernel, the following vulnerability has been resolved: net: prestera: validate firmware header length prestera_fw_hdr_parse() reads the firmware header before checking that the firmware image contains that header. Reject images shorter than struct prestera_fw_header before decoding the magic and version fields.
INFO
Published Date :
Aug. 22, 2026, 4:16 p.m.
Last Modified :
Aug. 22, 2026, 4:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-74693
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Reject images shorter than the firmware header.
- Ensure firmware image contains the header.
- Validate magic and version fields after checks.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-74693.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74693 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-74693
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-74693 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74693 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 22, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4c2703dfd7fabb0824b3bc345f9fa47e33248c14', 'lessThan': '38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240', 'versionType': 'git'}, {'status': 'affected', 'version': '4c2703dfd7fabb0824b3bc345f9fa47e33248c14', 'lessThan': '0fbcceb9d19f2d1dcdf099aee590f2517cb718bb', 'versionType': 'git'}, {'status': 'affected', 'version': '4c2703dfd7fabb0824b3bc345f9fa47e33248c14', 'lessThan': 'e0f382e8084117f0b11ffb070fe1079e38c0d7f9', 'versionType': 'git'}, {'status': 'affected', 'version': '4c2703dfd7fabb0824b3bc345f9fa47e33248c14', 'lessThan': '6fad06bb793d7089ae05b9fcf46e11be2dfe4850', 'versionType': 'git'}, {'status': 'affected', 'version': '4c2703dfd7fabb0824b3bc345f9fa47e33248c14', 'lessThan': '470ac9cce7308e60cf2dceb448749cdd006e73de', 'versionType': 'git'}, {'status': 'affected', 'version': '4c2703dfd7fabb0824b3bc345f9fa47e33248c14', 'lessThan': '363e048a9d0a6c245cbc348c8a220170afed046a', 'versionType': 'git'}, {'status': 'affected', 'version': '4c2703dfd7fabb0824b3bc345f9fa47e33248c14', 'lessThan': '7fa8a12296d8d5aa4b1c3904f0b354d81124cf29', 'versionType': 'git'}, {'status': 'affected', 'version': '4c2703dfd7fabb0824b3bc345f9fa47e33248c14', 'lessThan': '8ae344eb540af3f457179b52bc6061416752485c', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/marvell/prestera/prestera_pci.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.265', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.216', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.183', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.152', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.104', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.45', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.9', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/marvell/prestera/prestera_pci.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: net: prestera: validate firmware header length prestera_fw_hdr_parse() reads the firmware header before checking that the firmware image contains that header. Reject images shorter than struct prestera_fw_header before decoding the magic and version fields. Added Reference https://git.kernel.org/stable/c/0fbcceb9d19f2d1dcdf099aee590f2517cb718bb Added Reference https://git.kernel.org/stable/c/363e048a9d0a6c245cbc348c8a220170afed046a Added Reference https://git.kernel.org/stable/c/38a3afbf9fd8a2e8c47fa3ca47b425a8a9623240 Added Reference https://git.kernel.org/stable/c/470ac9cce7308e60cf2dceb448749cdd006e73de Added Reference https://git.kernel.org/stable/c/6fad06bb793d7089ae05b9fcf46e11be2dfe4850 Added Reference https://git.kernel.org/stable/c/7fa8a12296d8d5aa4b1c3904f0b354d81124cf29 Added Reference https://git.kernel.org/stable/c/8ae344eb540af3f457179b52bc6061416752485c Added Reference https://git.kernel.org/stable/c/e0f382e8084117f0b11ffb070fe1079e38c0d7f9