CVE-2026-93157hwrng: xilinx-trng - propagate timeout before any data is read
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 8979744aca8096ee5072798dfc1181606919b35d before 62219775a07ce0bd8085852f3d1e2d772bf6fdec; from 8979744aca8096ee5072798dfc1181606919b35d before bdc3b37a935f28c3e9eb2f6e889b4644d859fb08; from 8979744aca8096ee5072798dfc1181606919b35d before ba088974419326daf46c5dc03e2cf6ab6ab701f7 | CNA record |
References
- https://git.kernel.org/stable/c/62219775a07ce0bd8085852f3d1e2d772bf6fdec
- https://git.kernel.org/stable/c/bdc3b37a935f28c3e9eb2f6e889b4644d859fb08
- https://git.kernel.org/stable/c/ba088974419326daf46c5dc03e2cf6ab6ab701f7
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.