Answer in brief
CVE-2026-74438 records a Unknown severity vulnerability in crypto: sun4i-ss - Remove insecure and unused rng_alg. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2026-74438 records a Unknown severity vulnerability in crypto: sun4i-ss - Remove insecure and unused rng_alg. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <2eafecaba1b46bb9774eaf3556619fd5b6a17c1c || >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <ee2458f8188732aa53a5d42f56e87bfad288b44e || >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <306ded31bfa00a69d25823a60d7c797170bfb4f8 || >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <e4b7b9819811c4c51064c3d3d3c02f0be7491707 || >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <c401492e01c7bfd38cf14c94d85c7efafe7d1a25 || >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <9c8086d9511189c34dfa3f9e3a03f2bee12f56a5 || >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <b2c41fa9dd8fc740c489e060b199165771f268d1 | 2eafecaba1b46bb9774eaf3556619fd5b6a17c1c, ee2458f8188732aa53a5d42f56e87bfad288b44e, 306ded31bfa00a69d25823a60d7c797170bfb4f8, e4b7b9819811c4c51064c3d3d3c02f0be7491707, c401492e01c7bfd38cf14c94d85c7efafe7d1a25, 9c8086d9511189c34dfa3f9e3a03f2bee12f56a5, b2c41fa9dd8fc740c489e060b199165771f268d1 |
| Linux/Linuxgeneric | 4.14 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: crypto: sun4i-ss - Remove insecure and unused rng_alg Remove sun4i_ss_rng, as it is insecure and unused: - It has multiple vulnerabilities. sun4i_ss_prng_seed() is missing locking and has a buffer overflow. sun4i_ss_prng_generate() fails to fill the entire buffer with cryptographic random bytes, because it rounds the destination length down and also doesn't actually wait for the hardware to be ready before pulling bytes from it. - No user of this code is known. It's usable only theoretically via the "rng" algorithm type of AF_ALG. But userspace actually just uses the actual Linux RNG (/dev/random etc) instead. And rng_algs don't contribute entropy to the actual Linux RNG either. (This may have been confused with hwrng, which does contribute entropy.) The sun4i_ss_prng_seed() buffer overflow was reported by Tianchu Chen and discovered by Atuin - Automated Vulnerability Discovery Engine There's no point in fixing all these vulnerabilities individually when this is unused code, so let's just remove it.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <2eafecaba1b46bb9774eaf3556619fd5b6a17c1c || >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <ee2458f8188732aa53a5d42f56e87bfad288b44e || >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <306ded31bfa00a69d25823a60d7c797170bfb4f8 || >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <e4b7b9819811c4c51064c3d3d3c02f0be7491707 || >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <c401492e01c7bfd38cf14c94d85c7efafe7d1a25 || >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <9c8086d9511189c34dfa3f9e3a03f2bee12f56a5 || >=b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <b2c41fa9dd8fc740c489e060b199165771f268d1 | 2eafecaba1b46bb9774eaf3556619fd5b6a17c1c, ee2458f8188732aa53a5d42f56e87bfad288b44e, 306ded31bfa00a69d25823a60d7c797170bfb4f8, e4b7b9819811c4c51064c3d3d3c02f0be7491707, c401492e01c7bfd38cf14c94d85c7efafe7d1a25, 9c8086d9511189c34dfa3f9e3a03f2bee12f56a5, b2c41fa9dd8fc740c489e060b199165771f268d1 |
| Linux/Linuxgeneric | 4.14 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: crypto: sun4i-ss - Remove insecure and unused rng_alg Remove sun4i_ss_rng, as it is insecure and unused: - It has multiple vulnerabilities. sun4i_ss_prng_seed() is missing locking and has a buffer overflow. sun4i_ss_prng_generate() fails to fill the entire buffer with cryptographic random bytes, because it rounds the destination length down and also doesn't actually wait for the hardware to be ready before pulling bytes from it. - No user of this code is known. It's usable only theoretically via the "rng" algorithm type of AF_ALG. But userspace actually just uses the actual Linux RNG (/dev/random etc) instead. And rng_algs don't contribute entropy to the actual Linux RNG either. (This may have been confused with hwrng, which does contribute entropy.) The sun4i_ss_prng_seed() buffer overflow was reported by Tianchu Chen and discovered by Atuin - Automated Vulnerability Discovery Engine There's no point in fixing all these vulnerabilities individually when this is unused code, so let's just remove it.
Quoted source text, attributed separately from HOL analysis.