CVE-2021-47558
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-47558
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47558.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-47558
- Downstream
- Related
- Published
- 2024-05-24T15:15:20Z
- Modified
- 2025-09-18T15:37:52Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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 netiftxdisable 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: dwmac4setaddr+0x8/0x10 devhardstartxmit+0xe4/0x1ac schdirectxmit+0xe8/0x39c _devqueuexmit+0x3ec/0xaf0 devqueuexmit+0x14/0x20 [...] [ end trace 0000000000000002 ]---
- References