Date: Wed, 30 Sep 2020 10:35:56 +1000 From: Wade Mealing <wmealing@...hat.com> To: oss-security@...ts.openwall.com Subject: CVE-2020-25641 kernel: soft lockup when submitting zero length bvecs. Gday, A flaw was found in the Linux kernels implementation of biovec usage. A zero-length biovec request issued to the block subsystem could cause the kernel to enter an infinite loop causing a denial of service. An attacker with a local account can issue requests to a block device can cause a denial of service. This has been assigned CVE-2020-25641, According to the fix commits "Introduced in": # git tag --contains 1bdc76aea115 | head -n 1 v4.10 Fixed by: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e24969022cbd61ddc586f14824fc205661bb124 Thank you. -- Wade Mealing Product Security - Kernel, RHCE Red Hat <https://www.redhat.com> wmealing@...hat.com <https://red.ht/sig> TRIED. TESTED. TRUSTED. <https://redhat.com/trusted> secalert@...hat.com for urgent response
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