CVE-2021-29155

An issue was discovered in the Linux kernel through 5.11.x. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory. Specifically, for sequences of pointer arithmetic operations, the pointer modification performed by the first operation is not correctly accounted for when restricting subsequent operations.

Link	Resource
https://www.kernel.org	Vendor Advisory
https://www.openwall.com/lists/oss-security/2021/04/18/4	Mailing List Patch
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PAEQ3H6HKNO6KUCGRZVYSFSAGEUX23JL/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CUX2CA63453G34C6KYVBLJXJXEARZI2X/	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XZASHZVCOFJ4VU2I3BN5W5EPHWJQ7QWX/	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html	Mailing List Third Party Advisory

Configuration 1

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

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Published : 2021-04-20 04:15

Updated : 2022-04-19 03:58

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NVD link : CVE-2021-29155

Mitre link : CVE-2021-29155

No products.

CWE-125

Out-of-bounds Read