CVE-2021-47495: usbnet: sanity check for maxpacket
First published: Wed May 22 2024(Updated: )
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
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel | <4.4.291 | 4.4.291 |
| redhat/kernel | <4.9.289 | 4.9.289 |
| redhat/kernel | <4.14.254 | 4.14.254 |
| redhat/kernel | <4.19.215 | 4.19.215 |
| redhat/kernel | <5.4.157 | 5.4.157 |
| redhat/kernel | <5.10.77 | 5.10.77 |
| redhat/kernel | <5.14.16 | 5.14.16 |
| redhat/kernel | <5.15 | 5.15 |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Software Stack | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Virtual Appliance | <=ISVG 10.0.2 | |
| IBM Security Verify Governance Identity Manager Container | <=ISVG 10.0.2 |
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Reference Links
- https://git.kernel.org/stable/c/002d82227c0abe29118cf80f7e2f396b22d448ed
- https://git.kernel.org/stable/c/397430b50a363d8b7bdda00522123f82df6adc5e
- https://git.kernel.org/stable/c/492140e45d2bf27c1014243f8616a9b612144e20
- https://git.kernel.org/stable/c/524f333e98138d909a0a0c574a9ff6737dce2767
- https://git.kernel.org/stable/c/693ecbe8f799405f8775719deedb1f76265d375a
- https://git.kernel.org/stable/c/74b3b27cf9fecce00cd8918b7882fd81191d0aa4
- https://git.kernel.org/stable/c/7e8b6a4f18edee070213cb6a77118e8a412253c5
- https://git.kernel.org/stable/c/b9eba0a4a527e04d712f0e0401e5391ef124b33e
- https://access.redhat.com/security/cve/CVE-2021-47495
- https://lore.kernel.org/linux-cve-announce/2024052242-CVE-2021-47495-a5f8@gregkh/T
- https://access.redhat.com/errata/RHSA-2024:4211
- https://access.redhat.com/errata/RHSA-2024:4352
- https://access.redhat.com/errata/RHSA-2024:9315
- https://bugzilla.redhat.com/show_bug.cgi?id=2282920
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2021-47495?
CVE-2021-47495 is classified as a high severity vulnerability within the Linux kernel.
How do I fix CVE-2021-47495?
To fix CVE-2021-47495, upgrade your Linux kernel to versions 4.4.291, 4.9.289, 4.14.254, 4.19.215, 5.4.157, 5.10.77, 5.14.16, or 5.15 depending on your system.
What impact does CVE-2021-47495 have on my system?
CVE-2021-47495 could cause a kernel panic due to invalid maxpacket handling in the USB network driver.
Which systems are affected by CVE-2021-47495?
CVE-2021-47495 affects various Linux distributions using the specified vulnerable kernel versions.
Is CVE-2021-47495 a remote or local vulnerability?
CVE-2021-47495 is considered a local vulnerability as it requires local access to the affected system to trigger the issue.
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