Vulnerability · Published Jun 19, 2024 · Assigned by Linux
CVE-2021-47596net: hns3: fix use-after-free bug in hclgevf_send_mbx_msg
High 7.8
In plain English
A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)0.2%top 83.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In the Linux kernel, the following vulnerability has been resolved: net: hns3: fix use-after-free bug in hclgevf_send_mbx_msg Currently, the hns3_remove function firstly uninstall client instance, and then uninstall acceletion engine device. The netdevice is freed in client instance uninstall process, but acceletion engine device uninstall process still use it to trace runtime information. This causes a use after free problem. So fixes it by check the instance register state to avoid use after free.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | bpftool | 7.3.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k-debug | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k-debug-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k-debug-devel | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k-debug-devel-matched | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k-debug-modules | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k-debug-modules-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k-debug-modules-extra | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k-devel | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k-devel-matched | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k-modules | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k-modules-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-64k-modules-extra | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-abi-stablelists | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-cross-headers | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-debug | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-debug-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-debug-devel | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-debug-devel-matched | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-debug-modules | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-debug-modules-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-debug-modules-extra | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-debug-uki-virt | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-devel | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-devel-matched | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-doc | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-headers | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-modules | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-modules-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-modules-extra | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-rt | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-rt-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-rt-debug | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-rt-debug-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-rt-debug-devel | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-rt-debug-modules | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-rt-debug-modules-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-rt-debug-modules-extra | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-rt-devel | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-rt-modules | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-rt-modules-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-rt-modules-extra | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-tools | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-tools-libs | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-tools-libs-devel | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-uki-virt | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-zfcpdump | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-zfcpdump-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-zfcpdump-devel | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-zfcpdump-devel-matched | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-zfcpdump-modules | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-zfcpdump-modules-core | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | kernel-zfcpdump-modules-extra | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | libperf | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | perf | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | python3-perf | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | rtla | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| AlmaLinux:9 | rv | 5.14.0-427.26.1.el9_4 | ALSA-2024:4583 |
| Debian:12 | linux | 5.15.15-1 | DEBIAN-CVE-2021-47596 |
| Debian:13 | linux | 5.15.15-1 | DEBIAN-CVE-2021-47596 |
| Debian:14 | linux | 5.15.15-1 | DEBIAN-CVE-2021-47596 |
| Rocky Linux:9 | kernel | 0:5.14.0-427.26.1.el9_4 | RLSA-2024:4583 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2021-47596 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2021-47596 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | d8355240cf8fb8b9e002b5c8458578435cea85c2 – before 12512bc8f25b8ba9795dfbae0e9ca57ff13fd542d8355240cf8fb8b9e002b5c8458578435cea85c2 – before 4f4a353f6fe033807cd026a5de81c67469ff19b0d8355240cf8fb8b9e002b5c8458578435cea85c2 – before 27cbf64a766e86f068ce6214f04c00ceb4db1af4 |
| Linux | Linux | 5.8 |