CVE-2026-72495
RDMA/bnxt_re: Avoid repeated requests to allocate WC pages
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Avoid repeated requests to allocate WC pages Applications can request multiple WC pages for the same ucontext. As of now, only 1 WC page per ucontext is supported. Add a lock to avoid concurrent access and a check to fail repeated requests. Also, if the mmap entry insert fails for the WC, free the Doorbell page index mapped for the WC page.
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:19 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Apply kernel patches for bnxt_re.
- Add a lock for concurrent access.
- Check for repeated WC page requests.
- Free Doorbell page on mmap insert failure.
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-2026-72495.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72495 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-2026-72495
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-2026-72495 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72495 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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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '360da60d6c6edb9740de7a8e6d8969d62ceff956', 'lessThan': '478c4d24193fe3e6aa2accd4874ae43000e4a217', 'versionType': 'git'}, {'status': 'affected', 'version': '360da60d6c6edb9740de7a8e6d8969d62ceff956', 'lessThan': 'da406b8b49c1dfe661a497483940d7ee781430db', 'versionType': 'git'}, {'status': 'affected', 'version': '360da60d6c6edb9740de7a8e6d8969d62ceff956', 'lessThan': '441baa79043431807115fd030d7d0bb14ed441a0', 'versionType': 'git'}], 'programFiles': ['drivers/infiniband/hw/bnxt_re/ib_verbs.c', 'drivers/infiniband/hw/bnxt_re/ib_verbs.h', 'drivers/infiniband/hw/bnxt_re/uapi.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.5'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.5', '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/infiniband/hw/bnxt_re/ib_verbs.c', 'drivers/infiniband/hw/bnxt_re/ib_verbs.h', 'drivers/infiniband/hw/bnxt_re/uapi.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '360da60d6c6edb9740de7a8e6d8969d62ceff956', 'lessThan': '478c4d24193fe3e6aa2accd4874ae43000e4a217', 'versionType': 'git'}, {'status': 'affected', 'version': '360da60d6c6edb9740de7a8e6d8969d62ceff956', 'lessThan': 'da406b8b49c1dfe661a497483940d7ee781430db', 'versionType': 'git'}, {'status': 'affected', 'version': '360da60d6c6edb9740de7a8e6d8969d62ceff956', 'lessThan': '441baa79043431807115fd030d7d0bb14ed441a0', 'versionType': 'git'}], 'programFiles': ['drivers/infiniband/hw/bnxt_re/ib_verbs.c', 'drivers/infiniband/hw/bnxt_re/ib_verbs.h', 'drivers/infiniband/hw/bnxt_re/uapi.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.5'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.5', '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', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/infiniband/hw/bnxt_re/ib_verbs.c', 'drivers/infiniband/hw/bnxt_re/ib_verbs.h', 'drivers/infiniband/hw/bnxt_re/uapi.c'], 'defaultStatus': 'affected'}] -
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': '360da60d6c6edb9740de7a8e6d8969d62ceff956', 'lessThan': '478c4d24193fe3e6aa2accd4874ae43000e4a217', 'versionType': 'git'}, {'status': 'affected', 'version': '360da60d6c6edb9740de7a8e6d8969d62ceff956', 'lessThan': 'da406b8b49c1dfe661a497483940d7ee781430db', 'versionType': 'git'}, {'status': 'affected', 'version': '360da60d6c6edb9740de7a8e6d8969d62ceff956', 'lessThan': '441baa79043431807115fd030d7d0bb14ed441a0', 'versionType': 'git'}], 'programFiles': ['drivers/infiniband/hw/bnxt_re/ib_verbs.c', 'drivers/infiniband/hw/bnxt_re/ib_verbs.h', 'drivers/infiniband/hw/bnxt_re/uapi.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.5'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.5', '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/infiniband/hw/bnxt_re/ib_verbs.c', 'drivers/infiniband/hw/bnxt_re/ib_verbs.h', 'drivers/infiniband/hw/bnxt_re/uapi.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Avoid repeated requests to allocate WC pages Applications can request multiple WC pages for the same ucontext. As of now, only 1 WC page per ucontext is supported. Add a lock to avoid concurrent access and a check to fail repeated requests. Also, if the mmap entry insert fails for the WC, free the Doorbell page index mapped for the WC page. Added Reference https://git.kernel.org/stable/c/441baa79043431807115fd030d7d0bb14ed441a0 Added Reference https://git.kernel.org/stable/c/478c4d24193fe3e6aa2accd4874ae43000e4a217 Added Reference https://git.kernel.org/stable/c/da406b8b49c1dfe661a497483940d7ee781430db