Summary
It was discovered that the Serial CAN interface driver in the Linux kernel
did not properly initialize data. A local attacker could use this to expose
sensitive information (kernel memory). (CVE-2020-11494)
It was discovered that the linux kernel did not properly validate certain
mount options to the tmpfs virtual memory file system. A local attacker
with the ability to specify mount options could use this to cause a denial
of service (system crash). (CVE-2020-11565)
David Gibson discovered that the Linux kernel on Power9 CPUs did not
properly save and restore Authority Mask registers state in some
situations. A local attacker in a guest VM could use this to cause a denial
of service (host system crash). (CVE-2020-11669)
It was discovered that the block layer in the Linux kernel contained a race
condition leading to a use-after-free vulnerability. A local attacker could
possibly use this to cause a denial of service (system crash) or execute
arbitrary code. (CVE-2020-12657)
Fixed packages 14
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · 16.04 LTS 16.04:LTS | linux-aws-hwe | 4.15.0-1067.71~16.04.1 |
| Ubuntu · 16.04 LTS 16.04:LTS | linux-azure | 4.15.0-1083.93~16.04.1 |
| Ubuntu · 16.04 LTS 16.04:LTS | linux-gcp | 4.15.0-1071.81~16.04.1 |
| Ubuntu · 16.04 LTS 16.04:LTS | linux-hwe | 4.15.0-101.102~16.04.1 |
| Ubuntu · 16.04 LTS 16.04:LTS | linux-oracle | 4.15.0-1039.43~16.04.1 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux | 4.15.0-101.102 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-aws | 4.15.0-1067.71 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-azure-4.15 | 4.15.0-1083.93 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-gke-4.15 | 4.15.0-1059.62 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-kvm | 4.15.0-1060.61 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-oem | 4.15.0-1081.91 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-oracle | 4.15.0-1039.43 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-raspi2 | 4.15.0-1062.66 |
| Ubuntu · 18.04 LTS 18.04:LTS | linux-snapdragon | 4.15.0-1079.86 |
Vulnerabilities 4
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Unscored —
An issue was discovered in slc_bump in drivers/net/can/slcan.c in the Linux kernel 3.16 through 5.6.2. It allows attack…
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Unscored —
An issue was discovered in the Linux kernel through 5.6.2. mpol_parse_str in mm/mempolicy.c has a stack-based out-of-bo…
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Unscored —
An issue was discovered in the Linux kernel before 5.2 on the powerpc platform. arch/powerpc/kernel/idle_book3s.S does …
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Unscored —
An issue was discovered in the Linux kernel before 5.6.5. There is a use-after-free in block/bfq-iosched.c related to b…