CVE-2021-47495
usbnet: sanity check for maxpacket
MEDIUM
5.5
CVSS Score
Published: May 22, 2024 at 08:19 AM UTC
Updated: June 17, 2026 at 04:17 AM UTC
1 product affected across 1 vendorLinux Kernel
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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 4.4.2912.6.12 ≤ v < 4.14.2542.6.12 ≤ v < 4.19.2152.6.12 ≤ v < 4.4.2912.6.12 ≤ v < 4.9.2892.6.12 ≤ v < 5.10.772.6.12 ≤ v < 5.14.162.6.12 ≤ v < 5.152.6.12 ≤ v < 5.4.1574.10 ≤ v < 4.14.2544.15 ≤ v < 4.19.2154.20 ≤ v < 5.4.1574.5 ≤ v < 4.9.2895.11 ≤ v < 5.14.165.5 ≤ v < 5.10.771da177e4c3f41524e886b7f1b8a0c1fc7321cac22.6.125.15 rc15.15 rc25.15 rc35.15 rc45.15 rc55.15 rc6
Vendor states this is fixed in 002d82227c0abe29118cf80f7e2f396b22d448ed (fixed)
Vendor states this is fixed in 397430b50a363d8b7bdda00522123f82df6adc5e (fixed)
Vendor states this is fixed in 492140e45d2bf27c1014243f8616a9b612144e20 (fixed)
Vendor states this is fixed in 524f333e98138d909a0a0c574a9ff6737dce2767 (fixed)
Vendor states this is fixed in 693ecbe8f799405f8775719deedb1f76265d375a (fixed)
Vendor states this is fixed in 74b3b27cf9fecce00cd8918b7882fd81191d0aa4 (fixed)
Vendor states this is fixed in 7e8b6a4f18edee070213cb6a77118e8a412253c5 (fixed)
Vendor states this is fixed in b9eba0a4a527e04d712f0e0401e5391ef124b33e (fixed)
Vendor states this is fixed in 2.6.12 (unaffected)
Vendor states this is fixed in 4.14.254 (unaffected)
Vendor states this is fixed in 4.19.215 (unaffected)
Vendor states this is fixed in 4.4.291 (unaffected)
Vendor states this is fixed in 4.9.289 (unaffected)
Vendor states this is fixed in 5.10.77 (unaffected)
Vendor states this is fixed in 5.14.16 (unaffected)
Vendor states this is fixed in 5.15 (unaffected)
Vendor states this is fixed in 5.4.157 (unaffected)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- 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
References (8)
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/002d82227c0abe29118cf80f7e2f396b22d448edPatch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/397430b50a363d8b7bdda00522123f82df6adc5ePatch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/492140e45d2bf27c1014243f8616a9b612144e20Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/524f333e98138d909a0a0c574a9ff6737dce2767Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/693ecbe8f799405f8775719deedb1f76265d375aPatch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/74b3b27cf9fecce00cd8918b7882fd81191d0aa4Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7e8b6a4f18edee070213cb6a77118e8a412253c5Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b9eba0a4a527e04d712f0e0401e5391ef124b33eSSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusANALYZED
CWE
CWE-369
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