CVE-2026-74352
of: reserved_mem: avoid post-init UAF when alloc_reserved_mem_array() fails
Description
In the Linux kernel, the following vulnerability has been resolved: of: reserved_mem: avoid post-init UAF when alloc_reserved_mem_array() fails The global pointer 'reserved_mem' continues to reference the reserved_mem_array which lives in __initdata if alloc_reserved_mem_array() fails. of_reserved_mem_lookup() is exported for post-init use, that would dereference freed memory and trigger a use-after-free. So reset reserved_mem_count to 0 when alloc_reserved_mem_array() fails.
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 15, 2026, 6:22 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-74352
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
- Reset reserved_mem_count to 0 when allocation fails.
- Update the Linux kernel to the patched version.
- Apply relevant vendor patches for the Linux kernel.
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-2026-74352.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74352 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-2026-74352
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-2026-74352 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74352 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.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 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': 'b6ae53301eb41f0f59f83c161248b186bca7da70', 'lessThan': '6d28e6ad3c5c9248577f21057baa9bf16fa9ef3b', 'versionType': 'git'}, {'status': 'affected', 'version': '00c9a452a235c61f099504783badd9a7675ff5a5', 'lessThan': '9af58d10d0d8c08b822de5fc99e61f31a87ede8d', 'versionType': 'git'}, {'status': 'affected', 'version': '00c9a452a235c61f099504783badd9a7675ff5a5', 'lessThan': 'cbd3102fe27bc87da244bf4c3ba670ea4698b0a8', 'versionType': 'git'}, {'status': 'affected', 'version': '00c9a452a235c61f099504783badd9a7675ff5a5', 'lessThan': 'e1686ca81dbf3edbde589b7daf312b45cbf76e03', 'versionType': 'git'}], 'programFiles': ['drivers/of/of_reserved_mem.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.13', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/of/of_reserved_mem.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: of: reserved_mem: avoid post-init UAF when alloc_reserved_mem_array() fails The global pointer 'reserved_mem' continues to reference the reserved_mem_array which lives in __initdata if alloc_reserved_mem_array() fails. of_reserved_mem_lookup() is exported for post-init use, that would dereference freed memory and trigger a use-after-free. So reset reserved_mem_count to 0 when alloc_reserved_mem_array() fails. Added Reference https://git.kernel.org/stable/c/6d28e6ad3c5c9248577f21057baa9bf16fa9ef3b Added Reference https://git.kernel.org/stable/c/9af58d10d0d8c08b822de5fc99e61f31a87ede8d Added Reference https://git.kernel.org/stable/c/cbd3102fe27bc87da244bf4c3ba670ea4698b0a8 Added Reference https://git.kernel.org/stable/c/e1686ca81dbf3edbde589b7daf312b45cbf76e03