# [Important] Photon OS Security Update   
## Summary   
Advisory ID : PHSA-2021-4.0-0032    
Type : Security   
Severity : ['Important', 'Moderate']    
Issued on : 2021-05-26   
Affected Versions : Photon OS 4.0    
   
## Details   
An update of {'linux', 'redis', 'linux-rt', 'nginx'} packages of Photon OS has been released.   
   
## Affected Packages:    
### Important    
redis - ['[CVE-2021-29477](https://nvd.nist.gov/vuln/detail/CVE-2021-29477)']    
nginx - ['[CVE-2021-23017](https://nvd.nist.gov/vuln/detail/CVE-2021-23017)']    
### Moderate    
linux - ['[CVE-2021-3564](https://nvd.nist.gov/vuln/detail/CVE-2021-3564)']   
linux-rt - ['[CVE-2021-3564](https://nvd.nist.gov/vuln/detail/CVE-2021-3564)']   
   
## Solution     
Update the affected packages (tdnf update _package_)     
Note: For packages ['linux', 'linux-rt'] after updating, a reboot is required for taking effect.   
## Updated Packages Information    
linux-5.10.35-2.ph4.x86_64.rpm , sha256 : 24179b17a243fd24eb06921774065711b85c495aa4cd4154dc5caee622d2be87 , size : 29M , build_date : Wed, 26 May 2021 06:25:36 PDT    
linux-devel-5.10.35-2.ph4.x86_64.rpm , sha256 : d30dbf1e47d0de112504a69697039cfe723896e5020fea3e2264d00e81ab9a53 , size : 12M , build_date : Wed, 26 May 2021 05:00:16 PDT    
linux-docs-5.10.35-2.ph4.x86_64.rpm , sha256 : c233d5e20c5b34576c9da24f1745e616c99a4f92e406c4de9d7a5880ccd80d17 , size : 7.9M , build_date : Wed, 26 May 2021 05:00:16 PDT    
linux-drivers-gpu-5.10.35-2.ph4.x86_64.rpm , sha256 : 55d1e8154b916ab2a3f62c9cc1e9e9c24d9998451d7c3866a1229f3f1b38731a , size : 3.5M , build_date : Wed, 26 May 2021 05:00:16 PDT    
linux-drivers-intel-sgx-5.10.35-2.ph4.x86_64.rpm , sha256 : 74956cf81dfcb56e496d46c5c6a6776f31988e833e8ac98fb94684f285b4140d , size : 50K , build_date : Wed, 26 May 2021 05:00:16 PDT    
linux-drivers-sound-5.10.35-2.ph4.x86_64.rpm , sha256 : bb79c0304b507a25a479af24a458898abb017f88c8c0d9a3d97d45627ca09b36 , size : 608K , build_date : Wed, 26 May 2021 05:00:16 PDT    
linux-oprofile-5.10.35-2.ph4.x86_64.rpm , sha256 : 8ab4653be12c75fec8b76e7afcf082d31b9f89feb9f810d530e4e2b3df4b9b18 , size : 56K , build_date : Wed, 26 May 2021 05:00:16 PDT    
linux-python3-perf-5.10.35-2.ph4.x86_64.rpm , sha256 : 3e1269d13bedc15474fb10102ab35d9cc6d3198dce1a19a8942f5196b692027c , size : 168K , build_date : Wed, 26 May 2021 05:00:16 PDT    
linux-rt-5.10.35-2.ph4.x86_64.rpm , sha256 : 101182d735664e3f9cf1457d8a0177619c3ec195cc7a1bc44df5cc88d66a67d5 , size : 28M , build_date : Wed, 26 May 2021 06:25:22 PDT    
linux-rt-devel-5.10.35-2.ph4.x86_64.rpm , sha256 : ff218e8f20bbb44def0c4b4fe14fee0c50c38e3f81f1782adf269bc81299b505 , size : 12M , build_date : Wed, 26 May 2021 05:00:23 PDT    
linux-rt-docs-5.10.35-2.ph4.x86_64.rpm , sha256 : eb8c30c1c6afaf8962774bdd7a58e097d5697831b0a31d1763301717f89f1d9a , size : 7.8M , build_date : Wed, 26 May 2021 05:00:23 PDT    
linux-tools-5.10.35-2.ph4.x86_64.rpm , sha256 : f84aef7cad71b2565ca9c0728cb32fd6be839943274b0c0be7eb01c6753f5dd0 , size : 1.7M , build_date : Wed, 26 May 2021 05:00:16 PDT    
nginx-1.19.3-2.ph4.x86_64.rpm , sha256 : b9bb985975fff6fed25c36a07e92046864615942accf88110d493ba0cd2350b7 , size : 638K , build_date : Wed, 26 May 2021 04:59:52 PDT    
redis-6.0.13-1.ph4.x86_64.rpm , sha256 : 0a7bc63595b4d252f72d1bf759b96c0ff6f220a007ec2a71d28040a610feabb7 , size : 1.2M , build_date : Wed, 26 May 2021 05:00:02 PDT