vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-41073): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:N/C:C/I:C/A:C) | Sep 19, 2021 | Sep 28, 2021 | Aug 18, 2025 |
Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Sep 19, 2021
Added
Sep 28, 2021
Modified
Aug 18, 2025
Description
loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/<pid>/maps for exploitation.
Solutions
ubuntu-upgrade-linux-image-5-10-0-1049-oemubuntu-upgrade-linux-image-5-11-0-1017-azureubuntu-upgrade-linux-image-5-11-0-1017-kvmubuntu-upgrade-linux-image-5-11-0-1019-awsubuntu-upgrade-linux-image-5-11-0-1019-oracleubuntu-upgrade-linux-image-5-11-0-1019-raspiubuntu-upgrade-linux-image-5-11-0-1019-raspi-nolpaeubuntu-upgrade-linux-image-5-11-0-1020-gcpubuntu-upgrade-linux-image-5-11-0-37-genericubuntu-upgrade-linux-image-5-11-0-37-generic-64kubuntu-upgrade-linux-image-5-11-0-37-generic-lpaeubuntu-upgrade-linux-image-5-11-0-37-lowlatencyubuntu-upgrade-linux-image-5-13-0-1014-oemubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-edgeubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-20-04ubuntu-upgrade-linux-image-generic-hwe-20-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lpae-hwe-20-04ubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-hwe-20-04ubuntu-upgrade-linux-image-oem-20-04ubuntu-upgrade-linux-image-oem-20-04bubuntu-upgrade-linux-image-oem-20-04cubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-raspi-nolpaeubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-20-04
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