Linux: buffer overrun in netback due to unusual packet
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| Linux | Linux | unknown |
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Configuration 1 [-]
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Configuration 2 [-]
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Configuration 3 [-]
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No data.
No data available yet.
Vendor Workaround
Using another PV network backend (e.g. the qemu based "qnic" backend) will mitigate the problem. Using a dedicated network driver domain per guest will mitigate the problem.
| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-3623-1 | linux-5.10 security update |
Debian DLA |
DLA-3710-1 | linux security update |
Debian DSA |
DSA-5480-1 | linux security update |
Debian DSA |
DSA-5492-1 | linux security update |
Ubuntu USN |
USN-6343-1 | Linux kernel (OEM) vulnerabilities |
Ubuntu USN |
USN-6439-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6439-2 | Linux kernel (AWS) vulnerabilities |
Ubuntu USN |
USN-6440-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6440-2 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-6440-3 | Linux kernel (HWE) vulnerabilities |
Ubuntu USN |
USN-6441-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6441-2 | Linux kernel (GCP) vulnerabilities |
Ubuntu USN |
USN-6441-3 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6442-1 | Linux kernel (BlueField) vulnerabilities |
Ubuntu USN |
USN-6444-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6444-2 | Linux kernel (StarFive) vulnerabilities |
Ubuntu USN |
USN-6445-1 | Linux kernel (Intel IoTG) vulnerabilities |
Ubuntu USN |
USN-6445-2 | Linux kernel (Intel IoTG) vulnerabilities |
Ubuntu USN |
USN-6446-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6446-2 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-6446-3 | Linux kernel (Oracle) vulnerabilities |
Ubuntu USN |
USN-6466-1 | Linux kernel (NVIDIA) vulnerabilities |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.288% probability within 30 days)
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| Metrics |
ssvc
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| Description | The fix for XSA-423 added logic to Linux'es netback driver to deal with a frontend splitting a packet in a way such that not all of the headers would come in one piece. Unfortunately the logic introduced there didn't account for the extreme case of the entire packet being split into as many pieces as permitted by the protocol, yet still being smaller than the area that's specially dealt with to keep all (possible) headers together. Such an unusual packet would therefore trigger a buffer overrun in the driver. | The fix for XSA-423 added logic to Linux'es netback driver to deal with a frontend splitting a packet in a way such that not all of the headers would come in one piece. Unfortunately the logic introduced there didn't account for the extreme case of the entire packet being split into as many pieces as permitted by the protocol, yet still being smaller than the area that's specially dealt with to keep all (possible) headers together. Such an unusual packet would therefore trigger a buffer overrun in the driver. |