CVE-2021-26930
- State
- Published
- Severity
- Not scored
- Published
- Feb 17, 2021
- Updated
- Aug 3, 2024
- Reserved
- Feb 9, 2021
Description
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.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- http://xenbits.xen.org/xsa/advisory-365.html
- FEDORA-2021-8d45d297c6vendor-advisory
- FEDORA-2021-7143aca8cbvendor-advisory
- [debian-lts-announce] 20210309 [SECURITY] [DLA 2586-1] linux security updatemailing-list
- https://security.netapp.com/advisory/ntap-20210326-0001/
- [debian-lts-announce] 20210330 [SECURITY] [DLA 2610-1] linux-4.19 security updatemailing-list
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=871997bc9e423f05c7da7c9178e62dde5df2a7f8
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