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CVE-2021-47558

net: stmmac: Disable Tx queues when reconfiguring the interface PUBLISHED

Description (CNA)

In the Linux kernel, the following vulnerability has been resolved: net: stmmac: Disable Tx queues when reconfiguring the interface The Tx queues were not disabled in situations where the driver needed to stop the interface to apply a new configuration. This could result in a kernel panic when doing any of the 3 following actions: * reconfiguring the number of queues (ethtool -L) * reconfiguring the size of the ring buffers (ethtool -G) * installing/removing an XDP program (ip l set dev ethX xdp) Prevent the panic by making sure netif_tx_disable is called when stopping an interface. Without this patch, the following kernel panic can be observed when doing any of the actions above: Unable to handle kernel paging request at virtual address ffff80001238d040 [....] Call trace: dwmac4_set_addr+0x8/0x10 dev_hard_start_xmit+0xe4/0x1ac sch_direct_xmit+0xe8/0x39c __dev_queue_xmit+0x3ec/0xaf0 dev_queue_xmit+0x14/0x20 [...] [ end trace 0000000000000002 ]---

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 0366f7e06a6bee7eace3946a6b67fb88b828bc5c before a92f0eebb8dc008b9e8c51c6f7b8c93b27a29a43; affected 0366f7e06a6bee7eace3946a6b67fb88b828bc5c before b270bfe697367776eca2e6759a71d700fb8d82a2
Linux / Linuxaffected 5.10; unaffected 0 before 5.10; unaffected 5.15.6 through 5.15.*; unaffected 5.16 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.