CVE-2026-74666 evidence review

Linux

In the Linux kernel, the following vulnerability has been resolved: packet: synchronize pressure clearing with ring reconfiguration packet_set_ring() updates the RX ring state under sk_receive_queue.lock, but used to publish the tpacket receive mode through po->prot_hook.func after releasing that lock. packet_poll() and packet_recvmsg() can then run the pressure clearing path after the ring has been cleared while still seeing tpacket_rcv, causing __packet_rcv_has_room() to dereference stale or NULL ring storage. Move the existing receive hook assignment into the same sk_receive_queue.lock s...

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Evidence review

This record remains available for product and version identification, but it is not presented as a complete remediation procedure. Confirm the affected range and the supported fix in a direct vendor advisory before changing production systems.

ProductLinux

Affected versions>= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < bf3c8e86bc8ad111be3f3136125e255344bcb3da, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < 8cfb2e71926a682f36c4240067d424074dd8f70f, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < f015c9de92b731814059a343b765c60c0196225c, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < cf8189b82bb93f219ab740e0346c919ad65ada62, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < ad740b4990347521f0db260d381f9f74e7b340ba, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < 2c7b5eb87b2b288cdbde825f21d2b83b2f5da747, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < a08196c3cc105947746ec21309edfbb60275fcdb, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < 1a35da325cac4d5bcad76a2aa943408a6f1d9000, >= 4.2

Fixed versionsNo verified fixed-version field is available yet

Priority basisReview · CVSS 7.8 · EPSS -

Identify the product and installed version

Record whether Linux is present, where it is installed, and which interfaces are exposed.

Record the product name, package or appliance identifier, and installed version.
Identify internet-facing, administrative, API, and internal access paths.
Preserve the pre-change configuration and relevant service logs.

Compare the affected range

Use the current record as an identification aid: >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < bf3c8e86bc8ad111be3f3136125e255344bcb3da, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < 8cfb2e71926a682f36c4240067d424074dd8f70f, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < f015c9de92b731814059a343b765c60c0196225c, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < cf8189b82bb93f219ab740e0346c919ad65ada62, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < ad740b4990347521f0db260d381f9f74e7b340ba, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < 2c7b5eb87b2b288cdbde825f21d2b83b2f5da747, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < a08196c3cc105947746ec21309edfbb60275fcdb, >= 2ccdbaa6d55b0656244ba57c4b56765a0af76c0a < 1a35da325cac4d5bcad76a2aa943408a6f1d9000, >= 4.2. Resolve incomplete inventory results before deciding that an asset is unaffected.

Verify the authoritative remediation source

Open the linked source material and locate a direct vendor advisory for this CVE. Confirm the supported fixed release and product-specific update path before making a production change.

Operational boundary

This page does not replace the vendor advisory, support contract, change-management process, or recovery plan. Do not infer that an asset is unaffected from an incomplete inventory query or a missing fixed-version field.