7.8
HIGH
CVSS 3.1
CVE-2026-68474
powerpc/spufs: fix out-of-bounds access in spufs_mem_mmap_access()
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: powerpc/spufs: fix out-of-bounds access in spufs_mem_mmap_access() spufs_mem_mmap_access() computes the local store offset as address - vma->vm_start, but bounds-checks it against vma->vm_end instead of the local store size. On 64-bit, offset is always well below vma->vm_end, so the clamp never fires and len stays unbounded against the LS_SIZE buffer returned by ctx->ops->get_ls(). Reject offsets at or beyond LS_SIZE and clamp len to the remaining space, mirroring the guard already used by spufs_mem_mmap_fault() and spufs_ps_fault().
Details
INFO
Published Date :
Aug. 15, 2026, 6:20 a.m.
Last Modified :
Aug. 17, 2026, 6:17 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
Apply kernel patches to fix out-of-bounds access in spufs_mem_mmap_access.
- Update the Linux kernel to the latest version.
- Apply the specific patch for powerpc/spufs.
- Verify the bounds checking logic in memory access functions.
- Test the system for stability after patching.
References
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Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-68474.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68474 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-2026-68474
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-2026-68474 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68474 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.
-
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:L/UI:N/S:U/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': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': 'aa7aa8ba40c089762d821e3987aaae19e1f5705c', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': 'd479a7711f8ff127946467b910d947bd971b94ed', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '9d3569bfdceda69d5ffd5148901e57b69954d9ef', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': 'd97a8f3668949a8a9d1f6202f8c53446f2d89aa7', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '913feef74354c653f10ecd4631df7618a95c49c2', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '3c1e92f75e11a11492b8cb901fceeb9f16ae6415', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '4efa313b15925bdd864784865d6585174979294b', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '47b87f469a35b5ffc81c16eee6b13a9b6c8d55c6', 'versionType': 'git'}], 'programFiles': ['arch/powerpc/platforms/cell/spufs/file.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.27'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.27', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'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-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/powerpc/platforms/cell/spufs/file.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': 'aa7aa8ba40c089762d821e3987aaae19e1f5705c', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': 'd479a7711f8ff127946467b910d947bd971b94ed', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '9d3569bfdceda69d5ffd5148901e57b69954d9ef', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': 'd97a8f3668949a8a9d1f6202f8c53446f2d89aa7', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '913feef74354c653f10ecd4631df7618a95c49c2', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '3c1e92f75e11a11492b8cb901fceeb9f16ae6415', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '4efa313b15925bdd864784865d6585174979294b', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '47b87f469a35b5ffc81c16eee6b13a9b6c8d55c6', 'versionType': 'git'}], 'programFiles': ['arch/powerpc/platforms/cell/spufs/file.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.27'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.27', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'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': ['arch/powerpc/platforms/cell/spufs/file.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': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': 'aa7aa8ba40c089762d821e3987aaae19e1f5705c', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': 'd479a7711f8ff127946467b910d947bd971b94ed', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '9d3569bfdceda69d5ffd5148901e57b69954d9ef', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': 'd97a8f3668949a8a9d1f6202f8c53446f2d89aa7', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '913feef74354c653f10ecd4631df7618a95c49c2', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '3c1e92f75e11a11492b8cb901fceeb9f16ae6415', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '4efa313b15925bdd864784865d6585174979294b', 'versionType': 'git'}, {'status': 'affected', 'version': 'a352894d07059649398c4769dc8b645e1a1dad88', 'lessThan': '47b87f469a35b5ffc81c16eee6b13a9b6c8d55c6', 'versionType': 'git'}], 'programFiles': ['arch/powerpc/platforms/cell/spufs/file.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.27'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.27', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'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-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['arch/powerpc/platforms/cell/spufs/file.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: powerpc/spufs: fix out-of-bounds access in spufs_mem_mmap_access() spufs_mem_mmap_access() computes the local store offset as address - vma->vm_start, but bounds-checks it against vma->vm_end instead of the local store size. On 64-bit, offset is always well below vma->vm_end, so the clamp never fires and len stays unbounded against the LS_SIZE buffer returned by ctx->ops->get_ls(). Reject offsets at or beyond LS_SIZE and clamp len to the remaining space, mirroring the guard already used by spufs_mem_mmap_fault() and spufs_ps_fault(). Added Reference https://git.kernel.org/stable/c/3c1e92f75e11a11492b8cb901fceeb9f16ae6415 Added Reference https://git.kernel.org/stable/c/47b87f469a35b5ffc81c16eee6b13a9b6c8d55c6 Added Reference https://git.kernel.org/stable/c/4efa313b15925bdd864784865d6585174979294b Added Reference https://git.kernel.org/stable/c/913feef74354c653f10ecd4631df7618a95c49c2 Added Reference https://git.kernel.org/stable/c/9d3569bfdceda69d5ffd5148901e57b69954d9ef Added Reference https://git.kernel.org/stable/c/aa7aa8ba40c089762d821e3987aaae19e1f5705c Added Reference https://git.kernel.org/stable/c/d479a7711f8ff127946467b910d947bd971b94ed Added Reference https://git.kernel.org/stable/c/d97a8f3668949a8a9d1f6202f8c53446f2d89aa7
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.