CVE-2026-93157

hwrng: xilinx-trng - propagate timeout before any data is read

N/A
Published: September 17, 2026 at 04:11 PM UTC
Updated: October 19, 2026 at 10:17 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
N/A
Exploit prediction
EPSS 0.2%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.188979744aca8096ee5072798dfc1181606919b35d
Vendor states this is fixed in 62219775a07ce0bd8085852f3d1e2d772bf6fdec (fixed)
Vendor states this is fixed in ba088974419326daf46c5dc03e2cf6ab6ab701f7 (fixed)
Vendor states this is fixed in bdc3b37a935f28c3e9eb2f6e889b4644d859fb08 (fixed)
Vendor states this is fixed in 6.18 (unaffected)
Vendor states this is fixed in 6.18.52 (unaffected)
Vendor states this is fixed in 7.2.6 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

Quick Info

StatusRECEIVED

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