Important: kernel

Issue Overview:

In the Linux kernel af_alg_release() in crypto/af_alg.c neglects to set a NULL value for a certain structure member, which leads to a use-after-free (UAF) in sockfs_setattr. A local attacker can use this flaw to escalate privileges and take control of the system.(CVE-2019-8912)

Affected Packages:

kernel

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update kernel to update your system.

New Packages:

aarch64:  
    kernel-4.14.104-95.84.amzn2.aarch64  
    kernel-headers-4.14.104-95.84.amzn2.aarch64  
    kernel-debuginfo-common-aarch64-4.14.104-95.84.amzn2.aarch64  
    perf-4.14.104-95.84.amzn2.aarch64  
    perf-debuginfo-4.14.104-95.84.amzn2.aarch64  
    python-perf-4.14.104-95.84.amzn2.aarch64  
    python-perf-debuginfo-4.14.104-95.84.amzn2.aarch64  
    kernel-tools-4.14.104-95.84.amzn2.aarch64  
    kernel-tools-devel-4.14.104-95.84.amzn2.aarch64  
    kernel-tools-debuginfo-4.14.104-95.84.amzn2.aarch64  
    kernel-devel-4.14.104-95.84.amzn2.aarch64  
    kernel-debuginfo-4.14.104-95.84.amzn2.aarch64  
  
i686:  
    kernel-headers-4.14.104-95.84.amzn2.i686  
  
src:  
    kernel-4.14.104-95.84.amzn2.src  
  
x86_64:  
    kernel-4.14.104-95.84.amzn2.x86_64  
    kernel-headers-4.14.104-95.84.amzn2.x86_64  
    kernel-debuginfo-common-x86_64-4.14.104-95.84.amzn2.x86_64  
    perf-4.14.104-95.84.amzn2.x86_64  
    perf-debuginfo-4.14.104-95.84.amzn2.x86_64  
    python-perf-4.14.104-95.84.amzn2.x86_64  
    python-perf-debuginfo-4.14.104-95.84.amzn2.x86_64  
    kernel-tools-4.14.104-95.84.amzn2.x86_64  
    kernel-tools-devel-4.14.104-95.84.amzn2.x86_64  
    kernel-tools-debuginfo-4.14.104-95.84.amzn2.x86_64  
    kernel-devel-4.14.104-95.84.amzn2.x86_64  
    kernel-debuginfo-4.14.104-95.84.amzn2.x86_64  

Additional References

Red Hat: CVE-2019-8912

Mitre: CVE-2019-8912