Vulnerability · Published May 22, 2024 · Assigned by Linux
CVE-2021-47495usbnet: sanity check for maxpacket
Medium 5.5
In plain English
A medium-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 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.2%top 88.4% 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: usbnet: sanity check for maxpacket maxpacket of 0 makes no sense and oopses as we need to divide by it. Give up. V2: fixed typo in log and stylistic issues
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-core | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-debug | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-devel | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-doc | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-headers | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-modules | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-rt | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-rt-core | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-rt-debug | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-rt-debug-core | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-rt-debug-devel | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-rt-debug-kvm | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-rt-debug-modules | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-rt-devel | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-rt-kvm | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-rt-modules | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-rt-modules-extra | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-tools | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | perf | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:8 | python3-perf | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| Debian:12 | linux | 5.14.16-1 | DEBIAN-CVE-2021-47495 |
| Debian:13 | linux | 5.14.16-1 | DEBIAN-CVE-2021-47495 |
| Debian:14 | linux | 5.14.16-1 | DEBIAN-CVE-2021-47495 |
| Rocky Linux:8 | kernel | 0:4.18.0-553.8.1.el8_10 | RLSA-2024:4211 |
| Rocky Linux:8 | kernel-rt | 0:4.18.0-553.8.1.rt7.349.el8_10 | RLSA-2024:4352 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2021-47495 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2021-47495 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before b9eba0a4a527e04d712f0e0401e5391ef124b33e1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 524f333e98138d909a0a0c574a9ff6737dce27671da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 74b3b27cf9fecce00cd8918b7882fd81191d0aa41da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 002d82227c0abe29118cf80f7e2f396b22d448ed1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 492140e45d2bf27c1014243f8616a9b612144e201da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 693ecbe8f799405f8775719deedb1f76265d375a1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 7e8b6a4f18edee070213cb6a77118e8a412253c51da177e4c3f41524e886b7f1b8a0c1fc7321cac2 – before 397430b50a363d8b7bdda00522123f82df6adc5e |
| Linux | Linux | 2.6.12 |
References
- https://git.kernel.org/stable/c/b9eba0a4a527e04d712f0e0401e5391ef124b33e
- https://git.kernel.org/stable/c/524f333e98138d909a0a0c574a9ff6737dce2767
- https://git.kernel.org/stable/c/74b3b27cf9fecce00cd8918b7882fd81191d0aa4
- https://git.kernel.org/stable/c/002d82227c0abe29118cf80f7e2f396b22d448ed
- https://git.kernel.org/stable/c/492140e45d2bf27c1014243f8616a9b612144e20
- https://git.kernel.org/stable/c/693ecbe8f799405f8775719deedb1f76265d375a
- https://git.kernel.org/stable/c/7e8b6a4f18edee070213cb6a77118e8a412253c5
- https://git.kernel.org/stable/c/397430b50a363d8b7bdda00522123f82df6adc5e