CVE-2020-8835: falha de alta gravidade em Linux kernel
Linux kernel bpf verifier vulnerability
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21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.8epss 6.0%
In the Linux kernel 5.5.0 and newer, the bpf verifier (kernel/bpf/verifier.c) did not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. The vulnerability also affects the Linux 5.4 stable series, starting with v5.4.7, as the introducing commit was backported to that branch. This vulnerability was fixed in 5.6.1, 5.5.14, and 5.4.29. (issue is aka ZDI-CAN-10780)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Produtos afetados
Linux kernel · Linux kernelCVEs relacionadas — Linux kernel
No mesmo produto, das mais perigosas para as menos.
Referências
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fefhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fefhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7OONYGMSYBEFHLHZJK3GOI5Z553G4LD/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TF4PQZBEPNXDSK5DOBMW54OCLP25FTCD/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YXBWSHZ6DJIZVXKXGZPK6QPFCY7VKZEG/https://lore.kernel.org/bpf/20200330160324.15259-1-daniel%40iogearbox.net/T/https://security.netapp.com/advisory/ntap-20200430-0004/https://usn.ubuntu.com/4313-1/https://usn.ubuntu.com/usn/usn-4313-1https://www.openwall.com/lists/oss-security/2020/03/30/3https://www.thezdi.com/blog/2020/3/19/pwn2own-2020-day-one-resultshttp://www.openwall.com/lists/oss-security/2021/07/20/1