In the Linux kernel, the following vulnerability has been resolved:
crypto: essiv - Handle EBUSY correctly
As it is essiv only handles the special return value of EINPROGERSS, which means that in all other cases it will free data related to the request.
However, as the caller of essiv may specify MAY_BACKLOG, we also need to expect EBUSY and treat it in the same way. Otherwise backlogged requests will trigger a use-after-free.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-tools-develUpgrade kernel-tools-debuginfoUpgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade bpftoolUpgrade kernel-debuginfoUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade python-perf-debuginfoUpgrade kernel-livepatch-5.10.173-154.642Upgrade kernel-livepatch-5.15.102-61.139Upgrade kernel-toolsUpgrade kernelUpgrade python-perfUpgrade kernel-headersUpgrade bpftool-debuginfo | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-debuginfoUpgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-libbpfUpgrade python3-perf-debuginfoUpgrade kernel-libbpf-staticUpgrade kernel-develUpgrade kernel-debuginfoUpgrade python3-perfUpgrade kernel-libbpf-develUpgrade kernelUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-livepatch-6.1.19-30.43Upgrade perfUpgrade kernel-headers | Feb 20, 2026 | Dec 24, 2025 |
| Debian | — | Upgrade linux | Dec 29, 2025 | Dec 29, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 24, 2025 |
| Ubuntu | — | Upgrade linux-azure-5.15Upgrade linux-lowlatencyUpgrade linux-aws-fipsUpgrade linux-hwe-5.15Upgrade linux-hwe-5.4Upgrade linux-kvmUpgrade linux-gcpUpgrade linux-intel-iotg-5.15Upgrade linux-iotUpgrade linux-gcp-5.4Upgrade linux-realtimeUpgrade linux-oracleUpgrade linux-azure-5.4Upgrade linux-nvidiaUpgrade linux-intel-iot-realtimeUpgrade linux-riscv-5.15Upgrade linux-oracle-5.15Upgrade linux-azure-fipsUpgrade linux-fipsUpgrade linux-gcp-fipsUpgrade linux-gcp-5.15Upgrade linux-ibmUpgrade linux-azureUpgrade linux-intel-iotgUpgrade linux-xilinx-zynqmpUpgrade linux-gkeopUpgrade linux-raspi-5.4Upgrade linux-bluefieldUpgrade linuxUpgrade linux-ibm-5.4Upgrade linux-awsUpgrade linux-raspiUpgrade linux-aws-5.4Upgrade linux-oracle-5.4Upgrade linux-gkeUpgrade linux-lowlatency-hwe-5.15Upgrade linux-aws-5.15Upgrade linux-nvidia-tegra-5.15Upgrade linux-nvidia-tegra | Jan 6, 2026 | Dec 24, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 24, 2025 |
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