CVE-2026-80663: tools/power/x86/intel-speed-select: Harden daemon pidfile open
Noroxi assessment
Priority: Monitor (action score 28/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.12% (FIRST EPSS).
- Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: Linux Linux 19ffeb30fdfce63f8d6aca71bcdddb3f69d46278, 607af438e6430893a822964c841a1994b33acccc, 72a07abc6b9046f07a08bba353cad7667bcc9dce.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Linux Linux 19ffeb30fdfce63f8d6aca71bcdddb3f69d46278, 607af438e6430893a822964c841a1994b33acccc, 72a07abc6b9046f07a08bba353cad7667bcc9dce or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
In the Linux kernel, the following vulnerability has been resolved: tools/power/x86/intel-speed-select: Harden daemon pidfile open Avoid symlink-based pidfile clobbering by opening the pidfile with O_NOFOLLOW and validating it with fstat() before locking/writing. The daemon currently uses a fixed pidfile path under /tmp. A local unprivileged user can pre-create a symlink at that path and cause a root-run daemon instance to write into an attacker-chosen file.
- Published
- Aug 28, 2026
- Updated
- Oct 16, 2026
- EPSS
- 0.1% · 2th percentile
- CWE
- —
Report tools
Action score
28
Monitor
Low priority for now.
- CVSS
- 28 / 40 · 7.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.1%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · Linux
- 7.1
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
—
Versions reported by the vendor
Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.
Linux Linux
- 5.18affected
- 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 and later · before 905493a6338c82a70da16f86e0a6215db5a3d73daffected · git
- 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 and later · before db938eb9a3c1317596c28e94413b33426508d51baffected · git
- 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 and later · before 72a07abc6b9046f07a08bba353cad7667bcc9dceaffected · git
- 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 and later · before 19ffeb30fdfce63f8d6aca71bcdddb3f69d46278affected · git
- 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 and later · before e8adac69d1bdf035ef97cc914e845acd4ef08e28affected · git
- 7fd786dfbd2c55ddee3b87f33c82f1c58bdb1dd6 and later · before 607af438e6430893a822964c841a1994b33accccaffected · git
- before 5.18not affected · semver
- 6.1.178 and later · up to and including 6.1.*not affected · semver
- 6.6.145 and later · up to and including 6.6.*not affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | linux | before 6.1.180-1 | 6.1.180-1 |
| Debian:13 | linux | before 6.12.100-1 | 6.12.100-1 |
| Debian:14 | linux | before 7.1.5-1 | 7.1.5-1 |
| openSUSE:Leap 16.0 | cpupower | before 6.12.0-160000.3.1 | 6.12.0-160000.3.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | cpupower | before 6.4.0-150700.9.6.2 | 6.4.0-150700.9.6.2 |
| SUSE:Linux Enterprise Server 16.0 | cpupower | before 6.12.0-160000.3.1 | 6.12.0-160000.3.1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation40Plan
- CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment40Plan
- CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()40Plan
Published before and after this one in the same product
- ← EarlierCVE-2026-80655Aug 28, 2026 · soc: xilinx: Fix race condition in event registration0Monitor
- ← EarlierCVE-2026-80662Aug 28, 2026 · cxl: Fix CXL_HEADERLOG_SIZE to match RAS Capability size28Monitor
- Later →CVE-2026-80664Aug 28, 2026 · netfilter: xt_nat: reject unsupported target families29Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Linux Linux | 19ffeb30fdfce63f8d6aca71bcdddb3f69d46278 | Vendor (CNA) |
| Linux Linux | 607af438e6430893a822964c841a1994b33acccc | Vendor (CNA) |
| Linux Linux | 72a07abc6b9046f07a08bba353cad7667bcc9dce | Vendor (CNA) |
| Linux Linux | 905493a6338c82a70da16f86e0a6215db5a3d73d | Vendor (CNA) |
| Linux Linux | db938eb9a3c1317596c28e94413b33426508d51b | Vendor (CNA) |
| Linux Linux | e8adac69d1bdf035ef97cc914e845acd4ef08e28 | Vendor (CNA) |
| debian:linux | 6.1.180-1 · Debian:12 | Package registry (OSV) |
| opensuse:cpupower | 6.12.0-160000.3.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| suse:cpupower | 6.12.0-160000.3.1 · SUSE:Linux Enterprise Server 16.0 | Package registry (OSV) |
| suse:cpupower | 6.4.0-150700.9.6.2 · SUSE:Linux Enterprise Module for Basesystem 15 SP7 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-26-0945 · Aug 31, 2026(Linux Kernel Güvenlik Bildirimi)
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- SSVC exploitation— → none
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (5 more)Show less
- git.kernel.org/stable/c/607af438e6430893a822964c841a1994b33acccc
- git.kernel.org/stable/c/72a07abc6b9046f07a08bba353cad7667bcc9dce
- git.kernel.org/stable/c/905493a6338c82a70da16f86e0a6215db5a3d73d
- git.kernel.org/stable/c/db938eb9a3c1317596c28e94413b33426508d51b
- git.kernel.org/stable/c/e8adac69d1bdf035ef97cc914e845acd4ef08e28
Vendor advisories and official records. Exploit/PoC links are deliberately left out.