QID 198307

It was discovered that the BPF verifier in the Linux kernel did not properly handle mod32 destination register truncation when the source register was known to be 0.

It was discovered that heap overflows existed in the iSCSI subsystem in the Linux kernel.

It was discovered that the BPF subsystem in the Linux kernel did not properly compute a speculative execution limit on pointer arithmetic in some situations.

It was discovered that the BPF subsystem in the Linux kernel did not properly apply speculative execution limits on some pointer types.

It was discovered that the iSCSI subsystem in the Linux kernel did not properly restrict access to iSCSI transport handles.

It was discovered that an out-of-bounds read existed in the iSCSI subsystem in the Linux kernel.

A local attacker could use this to expose sensitive information (kernel memory) or possibly execute arbitrary code. (CVE-2021-3444)

A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-27365)

A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-27171)

A local attacker could use this to expose sensitive information (kernel memory). (CVE-2020-27170)

A local attacker could use this to cause a denial of service or expose sensitive information (kernel pointer addresses). (CVE-2021-27363)

A local attacker could use this to cause a denial of service (system crash) or expose sensitive information (kernel memory). (CVE-2021-27364)