CVE-2026-98157: EDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation
Noroxi assessment
Priority: Monitor (action score 22/100)
- 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: 0.11% (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 0e022ee4f8e0dc843ba4c80bb75408a7704279af, 528052af901d6e6bbfa0e52362a70a58a5dd1e43, 541fc6f733b32463cf23277637bb07e2aaa00b53; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to Linux Linux 0e022ee4f8e0dc843ba4c80bb75408a7704279af, 528052af901d6e6bbfa0e52362a70a58a5dd1e43, 541fc6f733b32463cf23277637bb07e2aaa00b53; azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 6.6.158.1-1 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: EDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation The poll_msec sysfs store file uses simple_strtoul() which accepts an unsigned long, but the target field (poll_msec) is unsigned int. On 64-bit systems, a value > UINT_MAX is silently truncated when stored. Fix the mismatch by using kstrtouint() instead. This rejects values larger than UINT_MAX at parse time, making truncation impossible. Also add a check for value < 1 to reject the 0-delay case, which would cause the poll work to spin without delay and consume 100% CPU.
- Published
- Sep 25, 2026
- Updated
- Oct 20, 2026
- EPSS
- 0.1% · 1th percentile
- CWE
- —
Report tools
Action score
22
Monitor
Low priority for now.
- CVSS
- 22 / 40 · 5.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.1%
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.
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- linux linux kernel2.6.23 and later · before 5.10.271
- linux linux kernel5.15 and later · before 5.15.222
- linux linux kernel6.1 and later · before 6.1.189
- linux linux kernel6.6 and later · before 6.6.158
- linux linux kernel6.12 and later · before 6.12.111
- linux linux kernel6.13 and later · before 6.18.53
- linux linux kernel6.19 and later · before 7.2.7
- linux linux kernel7.3
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
- 2.6.23affected
- e27e3dac651771fe3250f6305dee277bce29fc5d and later · before a60794ee3f453516ab3ed212ba0295ecf890bc8caffected · git
- e27e3dac651771fe3250f6305dee277bce29fc5d and later · before f856511058c8cb470d6c6c7ce908870adcdc7dc6affected · git
- e27e3dac651771fe3250f6305dee277bce29fc5d and later · before 656e2fe98ac452db4e5b8147d1f33b8c35b4ec4baffected · git
- e27e3dac651771fe3250f6305dee277bce29fc5d and later · before 541fc6f733b32463cf23277637bb07e2aaa00b53affected · git
- e27e3dac651771fe3250f6305dee277bce29fc5d and later · before ea01c061d839b520f385f112908de1c6e3391327affected · git
- e27e3dac651771fe3250f6305dee277bce29fc5d and later · before 528052af901d6e6bbfa0e52362a70a58a5dd1e43affected · git
- e27e3dac651771fe3250f6305dee277bce29fc5d and later · before 0e022ee4f8e0dc843ba4c80bb75408a7704279afaffected · git
- e27e3dac651771fe3250f6305dee277bce29fc5d and later · before 66cc9dec919dd63d8e4b3d386f7aed3ae684e645affected · git
- before 2.6.23not 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 6.1.190-1 | 6.1.190-1 |
| Debian:12 | linux-6.12 | before 6.12.111-1~deb12u1 | 6.12.111-1~deb12u1 |
| Debian:13 | linux | before 6.12.111-1 | 6.12.111-1 |
| Debian:14 | linux | before 7.2.7-1 | 7.2.7-1 |
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV90Now
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
Published before and after this one in the same product
- ← EarlierCVE-2026-98155Sep 25, 2026 · accel/qaic: Address potential out-of-bounds read in resp_worker()28Monitor
- ← EarlierCVE-2026-98156Sep 25, 2026 · drm/virtio: use the DMA API for resource backing on Xen31Monitor
- Later →CVE-2026-98158Sep 25, 2026 · ppp_async: drop the errored frame instead of resetting its headroom22Monitor
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 | 0e022ee4f8e0dc843ba4c80bb75408a7704279af | Vendor (CNA) |
| Linux Linux | 528052af901d6e6bbfa0e52362a70a58a5dd1e43 | Vendor (CNA) |
| Linux Linux | 541fc6f733b32463cf23277637bb07e2aaa00b53 | Vendor (CNA) |
| Linux Linux | 656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b | Vendor (CNA) |
| Linux Linux | 66cc9dec919dd63d8e4b3d386f7aed3ae684e645 | Vendor (CNA) |
| Linux Linux | a60794ee3f453516ab3ed212ba0295ecf890bc8c | Vendor (CNA) |
| Linux Linux | ea01c061d839b520f385f112908de1c6e3391327 | Vendor (CNA) |
| Linux Linux | f856511058c8cb470d6c6c7ce908870adcdc7dc6 | Vendor (CNA) |
| azl3 kernel 6.6.157.1-1 on Azure Linux 3.0 | 6.6.158.1-1 · Release Notes | Microsoft (MSRC) |
| debian:linux | 6.1.190-1 · Debian:12 | Package registry (OSV) |
| debian:linux | 6.12.111-1 · Debian:13 | Package registry (OSV) |
| debian:linux-6.12 | 6.12.111-1~deb12u1 · Debian:12 | 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-26-1184 · Sep 28, 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
- none
- 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
- None
- Availability impact
- High
Weakness class (CWE)
—
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd-primary
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
- CVSS— → 5.5
- Severity— → medium
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (7 more)Show less
- git.kernel.org/stable/c/528052af901d6e6bbfa0e52362a70a58a5dd1e43
- git.kernel.org/stable/c/541fc6f733b32463cf23277637bb07e2aaa00b53
- git.kernel.org/stable/c/656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b
- git.kernel.org/stable/c/66cc9dec919dd63d8e4b3d386f7aed3ae684e645
- git.kernel.org/stable/c/a60794ee3f453516ab3ed212ba0295ecf890bc8c
- git.kernel.org/stable/c/ea01c061d839b520f385f112908de1c6e3391327
- git.kernel.org/stable/c/f856511058c8cb470d6c6c7ce908870adcdc7dc6
Vendor advisories and official records. Exploit/PoC links are deliberately left out.