CVE-2021-31829
CVE-2021-31829
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
06 May 2021Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel.
Affected products
n/a · n/aWant to know if your infrastructure is exposed to this?
Talk to TrueHacking →References
https://github.com/torvalds/linux/commit/801c6058d14a82179a7ee17a4b532cac6fad067fhttps://lists.debian.org/debian-lts-announce/2021/06/msg00019.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VWCZ6LJLENL2C3URW5ICARTACXPFCFN2/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y4X2G5YAPYJGI3PFEZZNOTRYI33GOCCZ/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZI7OBCJQDNWMKLBP6MZ5NV4EUTDAMX6Q/http://www.openwall.com/lists/oss-security/2021/05/04/4