June 1, 2023, 9:39 p.m. |

Ubuntu security notices ubuntu.com

It was discovered that the Traffic-Control Index (TCINDEX) implementation
in the Linux kernel did not properly perform filter deactivation in some
situations. A local attacker could possibly use this to gain elevated
privileges. Please note that with the fix for this CVE, kernel support for
the TCINDEX classifier has been removed. (CVE-2023-1829)

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 …

control cve deactivation filter fix implementation intel kernel linux linux kernel local privileges support traffic usn vulnerabilities

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