VDB
CVE-2020-35508
CVE-2020-35508
PUBLISHED
A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.
EPSS 0.05% · 16.9th percentile
Risk Scores
EPSS Score
0.05%
16.9th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:FIPS-updates:18.04:LTS | linux-azure-fips | 4.15.0-2009.10, 4.15.0-2006.7, 4.15.0-2008.9 |
| Ubuntu:20.04:LTS | linux-raspi2 | 0, 5.4.0-1006.6, 5.4.0-1004.4 |
| Ubuntu:20.04:LTS | linux-riscv-5.8 | 5.8.0-14.16~20.04.3, 5.8.0-16.18~20.04.1, 0 |
| Ubuntu:18.04:LTS | linux-kvm | 4.15.0-1008.8, 4.15.0-1010.10, 4.15.0-1011.11 |
| Ubuntu:16.04:LTS | linux-hwe | 4.13.0-37.42~16.04.1, 4.13.0-38.43~16.04.1, 4.13.0-39.44~16.04.1 |
| Ubuntu:16.04:LTS | linux-raspi2 | 4.4.0-1096.104, 4.2.0-1013.19, 4.4.0-1094.102 |
| Ubuntu:18.04:LTS | linux-snapdragon | 4.15.0-1062.69, 4.15.0-1064.71, 4.15.0-1065.72 |
| Ubuntu:18.04:LTS | linux-gke-5.4 | 0, 5.4.0-1027.28~18.04.1, 5.4.0-1029.31~18.04.1 |
| Ubuntu:Pro:14.04:LTS | linux | 3.13.0-183.234, 3.13.0-197.248, 3.13.0-198.249 |
| Ubuntu:16.04:LTS | linux-aws | 4.4.0-1054.63, 4.4.0-1049.58, 4.4.0-1048.57 |
| Ubuntu:18.04:LTS | linux-aws-5.0 | 5.0.0-1023.26~18.04.1, 5.0.0-1021.24~18.04.1, 5.0.0-1022.25~18.04.1 |
| Ubuntu:20.04:LTS | linux | 5.4.0-24.28, 5.4.0-21.25, 5.4.0-39.43 |
| Ubuntu:Pro:FIPS:20.04:LTS | linux-gcp-fips | 0, 5.4.0-1021.21+fips1 |
| Ubuntu:Pro:FIPS-updates:20.04:LTS | linux-gcp-fips | *, 0 |
| Ubuntu:18.04:LTS | linux-oracle-5.0 | 5.0.0-1014.19, *, 5.0.0-1011.16 |
| Ubuntu:18.04:LTS | linux-oracle-5.4 | 0, *, * |
| Ubuntu:18.04:LTS | linux-oem | 4.15.0-1100.110, 4.15.0-1004.5, 4.15.0-1015.18 |
| Ubuntu:20.04:LTS | linux-kvm | 5.3.0-1003.3, 0, 5.4.0-1020.20 |
| Ubuntu:16.04:LTS | linux-kvm | 4.4.0-1008.13, 0, 4.4.0-1004.9 |
| Ubuntu:18.04:LTS | linux-azure-4.15 | 4.15.0-1082.92, 4.15.0-1099.110, 4.15.0-1096.106 |
…and 55 more
Timeline
- Dec 31, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 4, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-35508 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1902724 third-party-advisory
- https://github.com/torvalds/linux/commit/b4e00444cab4c3f3fec876dc0cccc8cbb0d1a948 third-party-advisory
- https://lore.kernel.org/kernel-hardening/20200324215049.GA3710@pi3.com.pl/ third-party-advisory
- https://mailman-eng.corp.redhat.com/archives/rhkernel-list/2020-December/498644.html third-party-advisory
- https://ubuntu.com/security/notices/USN-4751-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-4752-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-35508 third-party-advisory