{
  "cveId": "CVE-2026-90098",
  "url": "https://patchblox.com/security/cve/CVE-2026-90098",
  "summary": "CVE-2026-90098 is fixed in linux on 1 platform by DEBIAN-CVE-2026-90098 (version 7.2.6-1), released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "net: sparx5: fix sleep in atomic context in MAC table access",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  net: sparx5: fix sleep in atomic context in MAC table access  sparx5_set_rx_mode() runs with netif_addr_lock_bh held and iterates dev-\u003Emc via __dev_mc_sync(), which per address calls sparx5_mc_sync() / sparx5_mc_unsync() -\u003E sparx5_mact_learn() / sparx5_mact_forget().  These take sparx5-\u003Elock, a mutex, and then poll the MAC access command register with readx_poll_timeout(). A mutex may block, which is not allowed from atomic context.  Convert the driver to the new .ndo_set_rx_mode_async callback introduced in commit 3554b4345d85 (\u0022net: introduce ndo_set_rx_mode_async and netdev_rx_mode_work\u0022). The async callback is invoked from process context, so the mutex and sleeping completion poll can remain.  Observed with CONFIG_PROVE_LOCKING, CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_MUTEXES and CONFIG_DEBUG_ATOMIC_SLEEP enabled:    BUG: sleeping function called from invalid context at kernel/locking/mutex.c:591   in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 217, name: ip   preempt_count: 201, expected: 0   Call trace:    __might_resched\u002B0x144/0x248    __might_sleep\u002B0x48/0x7c    __mutex_lock\u002B0x74/0x850    mutex_lock_nested\u002B0x24/0x30    sparx5_mact_learn\u002B0x78/0x100    sparx5_mc_sync\u002B0x40/0x54    __hw_addr_sync_dev\u002B0xc4/0x170    sparx5_set_rx_mode\u002B0x4c/0x58    __dev_set_rx_mode\u002B0x64/0xa4    __dev_open\u002B0x1ec/0x26c",
  "published": "2026-09-17T17:17:01Z",
  "severity": "Moderate",
  "cvss": 5.5,
  "epss": 0.00198,
  "epssPercentile": 0.09553,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-90098",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-90098",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-90098",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}