CVE-2026-74438
CVE CVE-2026-74438EUVD EUVD-2026-59585Published 2026-08-15T05:59:36.000ZLast changed 2026-08-17T05:47:12.000ZCVSS 7.8
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 6.6.145; b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <9c8086d9511189c34dfa3f9e3a03f2bee12f56a5; b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <ee2458f8188732aa53a5d42f56e87bfad288b44e; patch: 6.1.178; b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <e4b7b9819811c4c51064c3d3d3c02f0be7491707; patch: 0; b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <306ded31bfa00a69d25823a60d7c797170bfb4f8; b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <2eafecaba1b46bb9774eaf3556619fd5b6a17c1c; patch: 6.12.97; b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <c401492e01c7bfd38cf14c94d85c7efafe7d1a25; patch: 5.15.212; patch: 7.1.5; 4.14; b8ae5c7387ad075ee61e8c8774ce2bca46bc9236 <b2c41fa9dd8fc740c489e060b199165771f268d1; patch: 7.2; patch: 6.18.40
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
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- Linux — Linux
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