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7.1
Linux Kernel: Oversized Packets Can Crash Network Devices
published 1 year ago
Summary
The Linux kernel has a vulnerability where oversized packets from network hardware can cause a crash. This is a concern for businesses that rely on network devices. To address this issue, update your Linux kernel to the latest version to ensure you have the fix.
What to do
- Update linux kernel to version 6.2.3.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Linux | linux | kernel |
>= 6.2.0, < 6.2.3 Fix: upgrade to 6.2.3
|
Original advisory text
net: bcmgenet: Add a check for oversized packets
In the Linux kernel, the following vulnerability has been resolved:
net: bcmgenet: Add a check for oversized packets
Occasionnaly we may get oversized packets from the hardware which
exceed the nomimal 2KiB buffer size we allocate SKBs with. Add an early
check which drops the packet to avoid invoking skb_over_panic() and move
on to processing the next packet.
net: bcmgenet: Add a check for oversized packets
Occasionnaly we may get oversized packets from the hardware which
exceed the nomimal 2KiB buffer size we allocate SKBs with. Add an early
check which drops the packet to avoid invoking skb_over_panic() and move
on to processing the next packet.
References
- https://git.kernel.org/stable/c/124ca24e0de958d2e20e0aa1e2434af7b72f8887 URL
- https://git.kernel.org/stable/c/411317d2a4a7d6049d8efeef0d32ae43f8baefce URL
- https://git.kernel.org/stable/c/5c0862c2c962052ed5055220a00ac1cefb92fbcd URL
- https://git.kernel.org/stable/c/5f56767fb5f2df875b6553e08dbec6a45431c988 URL
- https://git.kernel.org/stable/c/7cdb07e10c1258c08f31b24898930e4ece88d163 URL
- https://git.kernel.org/stable/c/841881320562cbeac7046b537b91cd000480cea2 URL
- https://git.kernel.org/stable/c/87363d1ab55e497702a9506ff423c422639c8a25 URL
- https://git.kernel.org/stable/c/c34b1c0870323649d45c5074828d7f754dea2673 URL
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53535... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2023-53535 Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git Product
Internet-facing
60 days
Internal
At next upgrade
- Not known to be exploited
- Needs hands-on effort to exploit (estimated)
- Gives an attacker partial control (estimated)
Timeline
Published4 Oct 2025
Updated5 Aug 2026
First seen5 Aug 2026
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