Sept. 19, 2023, 5:44 p.m. |

Ubuntu security notices ubuntu.com

It was discovered that some AMD x86-64 processors with SMT enabled could
speculatively execute instructions using a return address from a sibling
thread. A local attacker could possibly use this to expose sensitive
information. (CVE-2022-27672)

William Zhao discovered that the Traffic Control (TC) subsystem in the
Linux kernel did not properly handle network packet retransmission in
certain situations. A local attacker could use this to cause a denial of
service (kernel deadlock). (CVE-2022-4269)

Jordy Zomer and Alexandra Sandulescu discovered that …

address amd attacker control cve expose information kernel linux linux kernel local network network packet oem packet processors return sensitive sensitive information smt subsystem traffic usn vulnerabilities x86

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