Bug 1882201
| Summary: | kernel: zero length bvec causing softlockups. | ||
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| Product: | [Other] Security Response | Reporter: | Wade Mealing <wmealing> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED NOTABUG | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | acaringi, bhu, bmasney, brdeoliv, dhoward, dvlasenk, fhrbata, hkrzesin, jshortt, jstancek, kernel-mgr, nmurray, ptalbert, rvrbovsk |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: |
A flaw was found in the Linux kernel’s implementation of biovecs. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows an attacker with a local account and basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-09-24 05:03:57 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Wade Mealing
2020-09-24 03:26:13 UTC
External References: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7e24969022cbd61ddc586f14824fc205661bb124 https://www.kernel.org/doc/html/latest/block/biovecs.html Moving this to the other flaw bug, because the other one was made earlier. |