Unrated severityNVD Advisory· Published May 6, 2021· Updated Aug 3, 2024
CVE-2021-31829
CVE-2021-31829
Description
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- Linux/Linux kerneldescription
Patches
Vulnerability mechanics
References
6- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VWCZ6LJLENL2C3URW5ICARTACXPFCFN2/mitrevendor-advisoryx_refsource_FEDORA
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y4X2G5YAPYJGI3PFEZZNOTRYI33GOCCZ/mitrevendor-advisoryx_refsource_FEDORA
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZI7OBCJQDNWMKLBP6MZ5NV4EUTDAMX6Q/mitrevendor-advisoryx_refsource_FEDORA
- www.openwall.com/lists/oss-security/2021/05/04/4mitremailing-listx_refsource_MLISTx_refsource_MISC
- github.com/torvalds/linux/commit/801c6058d14a82179a7ee17a4b532cac6fad067fmitrex_refsource_MISC
- lists.debian.org/debian-lts-announce/2021/06/msg00019.htmlmitremailing-listx_refsource_MLIST
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