vulnerability
Ubuntu: (Multiple Advisories) (CVE-2025-21993): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:L/AC:L/Au:S/C:C/I:N/A:C) | Apr 2, 2025 | Apr 24, 2025 | Aug 18, 2025 |
Severity
6
CVSS
(AV:L/AC:L/Au:S/C:C/I:N/A:C)
Published
Apr 2, 2025
Added
Apr 24, 2025
Modified
Aug 18, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
iscsi_ibft: Fix UBSAN shift-out-of-bounds warning in ibft_attr_show_nic()
When performing an iSCSI boot using IPv6, iscsistart still reads the
/sys/firmware/ibft/ethernetX/subnet-mask entry. Since the IPv6 prefix
length is 64, this causes the shift exponent to become negative,
triggering a UBSAN warning. As the concept of a subnet mask does not
apply to IPv6, the value is set to ~0 to suppress the warning message.
Solutions
ubuntu-upgrade-linux-image-5-15-0-1023-nvidia-tegra-igxubuntu-upgrade-linux-image-5-15-0-1023-nvidia-tegra-igx-rtubuntu-upgrade-linux-image-5-15-0-1035-nvidia-tegraubuntu-upgrade-linux-image-5-15-0-1035-nvidia-tegra-rtubuntu-upgrade-linux-image-5-15-0-1046-xilinx-zynqmpubuntu-upgrade-linux-image-5-15-0-1064-gkeopubuntu-upgrade-linux-image-5-15-0-1074-ibmubuntu-upgrade-linux-image-5-15-0-1075-intel-iot-realtimeubuntu-upgrade-linux-image-5-15-0-1076-nvidiaubuntu-upgrade-linux-image-5-15-0-1076-nvidia-lowlatencyubuntu-upgrade-linux-image-5-15-0-1076-raspiubuntu-upgrade-linux-image-5-15-0-1077-intel-iotgubuntu-upgrade-linux-image-5-15-0-1078-kvmubuntu-upgrade-linux-image-5-15-0-1079-gkeubuntu-upgrade-linux-image-5-15-0-1079-oracleubuntu-upgrade-linux-image-5-15-0-1081-gcpubuntu-upgrade-linux-image-5-15-0-1081-gcp-fipsubuntu-upgrade-linux-image-5-15-0-1082-awsubuntu-upgrade-linux-image-5-15-0-1082-aws-fipsubuntu-upgrade-linux-image-5-15-0-1082-realtimeubuntu-upgrade-linux-image-5-15-0-1087-azureubuntu-upgrade-linux-image-5-15-0-1087-azure-fdeubuntu-upgrade-linux-image-5-15-0-1087-azure-fipsubuntu-upgrade-linux-image-5-15-0-138-fipsubuntu-upgrade-linux-image-5-15-0-138-genericubuntu-upgrade-linux-image-5-15-0-138-generic-64kubuntu-upgrade-linux-image-5-15-0-138-generic-lpaeubuntu-upgrade-linux-image-5-15-0-138-lowlatencyubuntu-upgrade-linux-image-5-15-0-138-lowlatency-64kubuntu-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-6-11-0-1008-realtimeubuntu-upgrade-linux-image-6-11-0-1011-raspiubuntu-upgrade-linux-image-6-11-0-1012-awsubuntu-upgrade-linux-image-6-11-0-1012-lowlatencyubuntu-upgrade-linux-image-6-11-0-1012-lowlatency-64kubuntu-upgrade-linux-image-6-11-0-1013-azureubuntu-upgrade-linux-image-6-11-0-1013-azure-fdeubuntu-upgrade-linux-image-6-11-0-1013-gcpubuntu-upgrade-linux-image-6-11-0-1013-gcp-64kubuntu-upgrade-linux-image-6-11-0-1014-oracleubuntu-upgrade-linux-image-6-11-0-1014-oracle-64kubuntu-upgrade-linux-image-6-11-0-1020-oemubuntu-upgrade-linux-image-6-11-0-24-genericubuntu-upgrade-linux-image-6-11-0-24-generic-64kubuntu-upgrade-linux-image-6-8-0-1010-gkeopubuntu-upgrade-linux-image-6-8-0-1014-azure-nvidiaubuntu-upgrade-linux-image-6-8-0-1023-gkeubuntu-upgrade-linux-image-6-8-0-1024-ibmubuntu-upgrade-linux-image-6-8-0-1024-oracleubuntu-upgrade-linux-image-6-8-0-1024-oracle-64kubuntu-upgrade-linux-image-6-8-0-1026-nvidiaubuntu-upgrade-linux-image-6-8-0-1026-nvidia-64kubuntu-upgrade-linux-image-6-8-0-1026-nvidia-lowlatencyubuntu-upgrade-linux-image-6-8-0-1026-nvidia-lowlatency-64kubuntu-upgrade-linux-image-6-8-0-1026-oemubuntu-upgrade-linux-image-6-8-0-1027-awsubuntu-upgrade-linux-image-6-8-0-1027-azureubuntu-upgrade-linux-image-6-8-0-1027-azure-fdeubuntu-upgrade-linux-image-6-8-0-1028-gcpubuntu-upgrade-linux-image-6-8-0-1028-gcp-64kubuntu-upgrade-linux-image-6-8-0-1028-raspiubuntu-upgrade-linux-image-6-8-0-2023-raspi-realtimeubuntu-upgrade-linux-image-6-8-0-58-genericubuntu-upgrade-linux-image-6-8-0-58-generic-64kubuntu-upgrade-linux-image-6-8-0-58-lowlatencyubuntu-upgrade-linux-image-6-8-0-58-lowlatency-64kubuntu-upgrade-linux-image-6-8-1-1020-realtimeubuntu-upgrade-linux-image-awsubuntu-upgrade-linux-image-aws-fipsubuntu-upgrade-linux-image-aws-lts-20-04ubuntu-upgrade-linux-image-aws-lts-22-04ubuntu-upgrade-linux-image-aws-lts-24-04ubuntu-upgrade-linux-image-azureubuntu-upgrade-linux-image-azure-cvmubuntu-upgrade-linux-image-azure-fdeubuntu-upgrade-linux-image-azure-fde-lts-22-04ubuntu-upgrade-linux-image-azure-fde-lts-24-04ubuntu-upgrade-linux-image-azure-fipsubuntu-upgrade-linux-image-azure-lts-20-04ubuntu-upgrade-linux-image-azure-lts-22-04ubuntu-upgrade-linux-image-azure-lts-24-04ubuntu-upgrade-linux-image-azure-nvidiaubuntu-upgrade-linux-image-bluefieldubuntu-upgrade-linux-image-fipsubuntu-upgrade-linux-image-gcpubuntu-upgrade-linux-image-gcp-64kubuntu-upgrade-linux-image-gcp-64k-lts-24-04ubuntu-upgrade-linux-image-gcp-fipsubuntu-upgrade-linux-image-gcp-lts-20-04ubuntu-upgrade-linux-image-gcp-lts-22-04ubuntu-upgrade-linux-image-gcp-lts-24-04ubuntu-upgrade-linux-image-genericubuntu-upgrade-linux-image-generic-64kubuntu-upgrade-linux-image-generic-64k-hwe-20-04ubuntu-upgrade-linux-image-generic-64k-hwe-22-04ubuntu-upgrade-linux-image-generic-64k-hwe-24-04ubuntu-upgrade-linux-image-generic-hwe-18-04ubuntu-upgrade-linux-image-generic-hwe-20-04ubuntu-upgrade-linux-image-generic-hwe-22-04ubuntu-upgrade-linux-image-generic-hwe-24-04ubuntu-upgrade-linux-image-generic-lpaeubuntu-upgrade-linux-image-generic-lpae-hwe-20-04ubuntu-upgrade-linux-image-gkeubuntu-upgrade-linux-image-gke-5-15ubuntu-upgrade-linux-image-gkeopubuntu-upgrade-linux-image-gkeop-5-15ubuntu-upgrade-linux-image-gkeop-6-8ubuntu-upgrade-linux-image-ibmubuntu-upgrade-linux-image-ibm-classicubuntu-upgrade-linux-image-ibm-lts-20-04ubuntu-upgrade-linux-image-ibm-lts-24-04ubuntu-upgrade-linux-image-intelubuntu-upgrade-linux-image-intel-iot-realtimeubuntu-upgrade-linux-image-intel-iotgubuntu-upgrade-linux-image-kvmubuntu-upgrade-linux-image-lowlatencyubuntu-upgrade-linux-image-lowlatency-64kubuntu-upgrade-linux-image-lowlatency-64k-hwe-20-04ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04ubuntu-upgrade-linux-image-lowlatency-64k-hwe-24-04ubuntu-upgrade-linux-image-lowlatency-hwe-18-04ubuntu-upgrade-linux-image-lowlatency-hwe-20-04ubuntu-upgrade-linux-image-lowlatency-hwe-22-04ubuntu-upgrade-linux-image-lowlatency-hwe-24-04ubuntu-upgrade-linux-image-nvidiaubuntu-upgrade-linux-image-nvidia-6-8ubuntu-upgrade-linux-image-nvidia-64kubuntu-upgrade-linux-image-nvidia-64k-6-8ubuntu-upgrade-linux-image-nvidia-64k-hwe-22-04ubuntu-upgrade-linux-image-nvidia-hwe-22-04ubuntu-upgrade-linux-image-nvidia-lowlatencyubuntu-upgrade-linux-image-nvidia-lowlatency-64kubuntu-upgrade-linux-image-nvidia-tegraubuntu-upgrade-linux-image-nvidia-tegra-igxubuntu-upgrade-linux-image-nvidia-tegra-igx-rtubuntu-upgrade-linux-image-nvidia-tegra-rtubuntu-upgrade-linux-image-oemubuntu-upgrade-linux-image-oem-20-04ubuntu-upgrade-linux-image-oem-20-04bubuntu-upgrade-linux-image-oem-20-04cubuntu-upgrade-linux-image-oem-20-04dubuntu-upgrade-linux-image-oem-22-04ubuntu-upgrade-linux-image-oem-22-04aubuntu-upgrade-linux-image-oem-22-04bubuntu-upgrade-linux-image-oem-22-04cubuntu-upgrade-linux-image-oem-22-04dubuntu-upgrade-linux-image-oem-24-04ubuntu-upgrade-linux-image-oem-24-04aubuntu-upgrade-linux-image-oem-24-04bubuntu-upgrade-linux-image-oem-osp1ubuntu-upgrade-linux-image-oracleubuntu-upgrade-linux-image-oracle-64kubuntu-upgrade-linux-image-oracle-64k-lts-24-04ubuntu-upgrade-linux-image-oracle-lts-20-04ubuntu-upgrade-linux-image-oracle-lts-22-04ubuntu-upgrade-linux-image-oracle-lts-24-04ubuntu-upgrade-linux-image-raspiubuntu-upgrade-linux-image-raspi-hwe-18-04ubuntu-upgrade-linux-image-raspi-nolpaeubuntu-upgrade-linux-image-raspi-realtimeubuntu-upgrade-linux-image-raspi2ubuntu-upgrade-linux-image-realtimeubuntu-upgrade-linux-image-realtime-hwe-24-04ubuntu-upgrade-linux-image-snapdragon-hwe-18-04ubuntu-upgrade-linux-image-virtualubuntu-upgrade-linux-image-virtual-hwe-18-04ubuntu-upgrade-linux-image-virtual-hwe-20-04ubuntu-upgrade-linux-image-virtual-hwe-22-04ubuntu-upgrade-linux-image-virtual-hwe-24-04ubuntu-upgrade-linux-image-xilinx-zynqmp
References
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