CVE-2021-26930

An issue was discovered in the Linux kernel 3.11 through 5.10.16, as used by Xen. To service requests to the PV backend, the driver maps grant references provided by the frontend. In this process, errors may be encountered. In one case, an error encountered earlier might be discarded by later processing, resulting in the caller assuming successful mapping, and hence subsequent operations trying to access space that wasn't mapped. In another case, internal state would be insufficiently updated, preventing safe recovery from the error. This affects drivers/block/xen-blkback/blkback.c.

Link	Resource
http://xenbits.xen.org/xsa/advisory-365.html	Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2XQR52ICKRK3GC4HDWLMWF2U55YGAR63/	Mailing List Patch
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GWQWPWYZRXVFJI5M3VCM72X27IB7CKOB/	Mailing List Patch
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html	Mailing List Third Party Advisory
https://security.netapp.com/advisory/ntap-20210326-0001/	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00035.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:debian:debian_linux:9.0:*:*:*:*:*:*:*

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Published : 2021-02-17 01:15

Updated : 2022-01-04 04:38

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NVD link : CVE-2021-26930

Mitre link : CVE-2021-26930

No products.

NVD-CWE-noinfo