{
  "cveId": "CVE-2025-21799",
  "url": "https://patchblox.com/security/cve/CVE-2025-21799",
  "summary": "CVE-2025-21799 is fixed in 61 products on 1 platform, first by DEBIAN-CVE-2025-21799, released February 27, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  net: ethernet: ti: am65-cpsw: fix freeing IRQ in...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net: ethernet: ti: am65-cpsw: fix freeing IRQ in am65_cpsw_nuss_remove_tx_chns()  When getting the IRQ we use k3_udma_glue_tx_get_irq() which returns negative error value on error. So not NULL check is not sufficient to deteremine if IRQ is valid. Check that IRQ is greater then zero to ensure it is valid.  There is no issue at probe time but at runtime user can invoke .set_channels which results in the following call chain. am65_cpsw_set_channels()  am65_cpsw_nuss_update_tx_rx_chns()   am65_cpsw_nuss_remove_tx_chns()   am65_cpsw_nuss_init_tx_chns()  At this point if am65_cpsw_nuss_init_tx_chns() fails due to k3_udma_glue_tx_get_irq() then tx_chn-\u003Eirq will be set to a negative value.  Then, at subsequent .set_channels with higher channel count we will attempt to free an invalid IRQ in am65_cpsw_nuss_remove_tx_chns() leading to a kernel warning.  The issue is present in the original commit that introduced this driver, although there, am65_cpsw_nuss_update_tx_rx_chns() existed as am65_cpsw_nuss_update_tx_chns().",
  "published": "2025-02-27T20:16:02Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00228,
  "epssPercentile": 0.13711,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
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