vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-47211): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | Apr 10, 2024 | Jun 5, 2025 | Aug 18, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
Apr 10, 2024
Added
Jun 5, 2025
Modified
Aug 18, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
ALSA: usb-audio: fix null pointer dereference on pointer cs_desc
The pointer cs_desc return from snd_usb_find_clock_source could
be null, so there is a potential null pointer dereference issue.
Fix this by adding a null check before dereference.
Solutions
ubuntu-upgrade-linux-image-4-15-0-1136-fipsubuntu-upgrade-linux-image-4-15-0-1143-oracleubuntu-upgrade-linux-image-4-15-0-1164-kvmubuntu-upgrade-linux-image-4-15-0-1174-gcpubuntu-upgrade-linux-image-4-15-0-1181-awsubuntu-upgrade-linux-image-4-15-0-1189-azureubuntu-upgrade-linux-image-4-15-0-2082-gcp-fipsubuntu-upgrade-linux-image-4-15-0-2098-azure-fipsubuntu-upgrade-linux-image-4-15-0-2119-aws-fipsubuntu-upgrade-linux-image-4-15-0-238-genericubuntu-upgrade-linux-image-4-15-0-238-lowlatencyubuntu-upgrade-linux-image-4-4-0-1114-fipsubuntu-upgrade-linux-image-4-4-0-1144-awsubuntu-upgrade-linux-image-4-4-0-1145-kvmubuntu-upgrade-linux-image-4-4-0-1182-awsubuntu-upgrade-linux-image-4-4-0-269-genericubuntu-upgrade-linux-image-4-4-0-269-lowlatencyubuntu-upgrade-linux-image-5-4-0-1051-iotubuntu-upgrade-linux-image-5-4-0-1065-xilinx-zynqmpubuntu-upgrade-linux-image-5-4-0-1093-ibmubuntu-upgrade-linux-image-5-4-0-1106-bluefieldubuntu-upgrade-linux-image-5-4-0-1121-fipsubuntu-upgrade-linux-image-5-4-0-1130-raspiubuntu-upgrade-linux-image-5-4-0-1134-kvmubuntu-upgrade-linux-image-5-4-0-1145-oracleubuntu-upgrade-linux-image-5-4-0-1147-awsubuntu-upgrade-linux-image-5-4-0-1147-aws-fipsubuntu-upgrade-linux-image-5-4-0-1150-gcpubuntu-upgrade-linux-image-5-4-0-1150-gcp-fipsubuntu-upgrade-linux-image-5-4-0-1152-azureubuntu-upgrade-linux-image-5-4-0-1153-azure-fipsubuntu-upgrade-linux-image-5-4-0-218-genericubuntu-upgrade-linux-image-5-4-0-218-generic-lpaeubuntu-upgrade-linux-image-5-4-0-218-lowlatencyubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-aws-fipsubuntu-upgrade-linux-image-aws-hweubuntu-upgrade-linux-image-aws-lts-18-04ubuntu-upgrade-linux-image-aws-lts-20-04ubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-fipsubuntu-upgrade-linux-image-azure-lts-18-04ubuntu-upgrade-linux-image-azure-lts-20-04ubuntu-upgrade-linux-image-bluefieldubuntu-upgrade-linux-image-fipsubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-gcp-fipsubuntu-upgrade-linux-image-gcp-lts-18-04ubuntu-upgrade-linux-image-gcp-lts-20-04ubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-hwe-16-04ubuntu-upgrade-linux-image-generic-hwe-18-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lts-xenialubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-ibmubuntu-upgrade-linux-image-ibm-lts-20-04ubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-hwe-16-04ubuntu-upgrade-linux-image-lowlatency-hwe-18-04ubuntu-upgrade-linux-image-lowlatency-lts-xenialubuntu-upgrade-linux-image-oemubuntu-upgrade-linux-image-oem-osp1ubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-lts-18-04ubuntu-upgrade-linux-image-oracle-lts-20-04ubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-raspi-hwe-18-04ubuntu-upgrade-linux-image-raspi2ubuntu-upgrade-linux-image-snapdragon-hwe-18-04ubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-16-04ubuntu-upgrade-linux-image-virtual-hwe-18-04ubuntu-upgrade-linux-image-virtual-lts-xenialubuntu-upgrade-linux-image-xilinx-zynqmp
References
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