CVE-2021-26931 log

Source
Severity Low
Remote No
Type Denial of service
Description
An issue was discovered in the Linux kernel 2.6.39 up to 5.10.17, as used in Xen. Block, net, and SCSI backends consider certain errors a plain bug, deliberately causing a kernel crash. For errors potentially being at least under the influence of guests (such as out of memory conditions), it isn't correct to assume a plain bug. Memory allocations potentially causing such crashes occur only when Linux is running in PV mode, though. This affects drivers/block/xen-blkback/blkback.c and drivers/xen/xen-scsiback.c.
Group Package Affected Fixed Severity Status Ticket
AVG-1613 linux-hardened 5.10.17.hardened1-1 Medium Vulnerable
AVG-1615 linux-lts 5.10.17-1 5.10.18-1 Medium Fixed
AVG-1614 linux-zen 5.11.zen2-2 5.11.1.zen1-1 Medium Fixed
AVG-1580 linux 5.11.arch2-1 5.11.1.arch1-1 Medium Fixed
References
https://xenbits.xen.org/xsa/advisory-362.html
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.11.1&id=ea26c8d0f31a7fd14c3e150474b5befb9757555e
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.11.1&id=c87e9ee18fd9697b489fbb9a0be56ba2902bc048
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.11.1&id=790f464ee0251dae1dcdb5cfb18ab54d881a6886
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.18&id=8f8ebd6b1cb5cff96a11cd336027e745d48c2cab
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.18&id=2814b3aa38a679c63aa535355b02a5bd0f681a83
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.18&id=9bea436fc3fc9a820b8b34e83708971c1813b892