CVE-2026-93157: hwrng: xilinx-trng - propagate timeout before any data is read
Noroxi assessment
Priority: Monitor (action score 0/100)
- 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: 0.20% (FIRST EPSS).
- Fixed version: Linux Linux 62219775a07ce0bd8085852f3d1e2d772bf6fdec, ba088974419326daf46c5dc03e2cf6ab6ab701f7, bdc3b37a935f28c3e9eb2f6e889b4644d859fb08.
Low priority for now. Upgrade to Linux Linux 62219775a07ce0bd8085852f3d1e2d772bf6fdec, ba088974419326daf46c5dc03e2cf6ab6ab701f7, bdc3b37a935f28c3e9eb2f6e889b4644d859fb08 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: hwrng: xilinx-trng - propagate timeout before any data is read xtrng_readblock32() polls for 16-byte chunks but returns the number of bytes read even when the first poll times out. Its caller then treats a zero return as a short successful read, and partial reads for full 32-byte blocks can make the tail copy use a fixed block offset rather than the amount already produced. Return the poll error when no data has been read, preserve partial positive returns after some data is available, stop the generator on all collection exits, and append tail bytes at the current output count.
- Published
- Sep 17, 2026
- Updated
- Oct 19, 2026
- EPSS
- 0.2% · 10th percentile
- CWE
- —
Report tools
Action score
0
Low priority for now.
- CVSS
- 0 / 40 · —
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
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.
Is your version affected? Check itNoroxi 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.
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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
- 6.18affected
- 8979744aca8096ee5072798dfc1181606919b35d and later · before 62219775a07ce0bd8085852f3d1e2d772bf6fdecaffected · git
- 8979744aca8096ee5072798dfc1181606919b35d and later · before bdc3b37a935f28c3e9eb2f6e889b4644d859fb08affected · git
- 8979744aca8096ee5072798dfc1181606919b35d and later · before ba088974419326daf46c5dc03e2cf6ab6ab701f7affected · git
- before 6.18not affected · semver
- 6.18.52 and later · up to and including 6.18.*not affected · semver
- 7.2.6 and later · up to and including 7.2.*not affected · semver
- 7.3 and laternot affected · original_commit_for_fix
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:14 | linux | before 7.2.6-1 | 7.2.6-1 |
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-2026-93155Sep 17, 2026 · crypto: keembay - Fix AEAD unregister count in error path0Monitor
- ← EarlierCVE-2026-93156Sep 17, 2026 · crypto: rk3288 - fail ahash requests on HASH idle timeout0Monitor
- Later →CVE-2026-93158Sep 17, 2026 · crypto: sa2ul - stop probe if context pool creation fails0Monitor
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 | 62219775a07ce0bd8085852f3d1e2d772bf6fdec | Vendor (CNA) |
| Linux Linux | ba088974419326daf46c5dc03e2cf6ab6ab701f7 | Vendor (CNA) |
| Linux Linux | bdc3b37a935f28c3e9eb2f6e889b4644d859fb08 | Vendor (CNA) |
| debian:linux | 7.2.6-1 · Debian:14 | 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).
Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.
Technical details
No CVSS vector for this record, so attack conditions can't be derived.
Weakness class (CWE)
—
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 (1)
- Fix✗ → ✓
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References
Show all references (2 more)Show less
Vendor advisories and official records. Exploit/PoC links are deliberately left out.