In the Linux kernel, the following vulnerability has been resolved:
gve: guard XDP xmit NDO on existence of xdp queues
In GVE, dedicated XDP queues only exist when an XDP program is installed
and the interface is up. As such, the NDO XDP XMIT callback should
return early if either of these conditions are false.
In the case of no loaded XDP program, priv->num_xdp_queues=0 which can
cause a divide-by-zero error, and in the case of interface down,
num_xdp_queues remains untouched to persist XDP queue count for the next
interface up, but the TX pointer itself would be NULL.
The XDP xmit callback also needs to synchronize with a device
transitioning from open to close. This synchronization will happen via
the GVE_PRIV_FLAGS_NAPI_ENABLED bit along with a synchronize_net() call,
which waits for any RCU critical sections at call-time to complete.
Metrics
Affected Vendors & Products
References
History
Thu, 13 Feb 2025 01:00:00 +0000
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Weaknesses | CWE-369 CWE-476 |
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Wed, 22 Jan 2025 02:30:00 +0000
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cvssV3_1
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Tue, 21 Jan 2025 12:15:00 +0000
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Description | In the Linux kernel, the following vulnerability has been resolved: gve: guard XDP xmit NDO on existence of xdp queues In GVE, dedicated XDP queues only exist when an XDP program is installed and the interface is up. As such, the NDO XDP XMIT callback should return early if either of these conditions are false. In the case of no loaded XDP program, priv->num_xdp_queues=0 which can cause a divide-by-zero error, and in the case of interface down, num_xdp_queues remains untouched to persist XDP queue count for the next interface up, but the TX pointer itself would be NULL. The XDP xmit callback also needs to synchronize with a device transitioning from open to close. This synchronization will happen via the GVE_PRIV_FLAGS_NAPI_ENABLED bit along with a synchronize_net() call, which waits for any RCU critical sections at call-time to complete. | |
Title | gve: guard XDP xmit NDO on existence of xdp queues | |
References |
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Status: PUBLISHED
Assigner: Linux
Published: 2025-01-21T12:01:29.212Z
Updated: 2025-01-21T12:01:29.212Z
Reserved: 2025-01-19T11:50:08.377Z
Link: CVE-2024-57932

No data.

Status : Received
Published: 2025-01-21T12:15:26.837
Modified: 2025-01-21T12:15:26.837
Link: CVE-2024-57932
