{"id":"DEBIAN-CVE-2026-43276","details":"In the Linux kernel, the following vulnerability has been resolved:  net: mana: Fix double destroy_workqueue on service rescan PCI path  While testing corner cases in the driver, a use-after-free crash was found on the service rescan PCI path.  When mana_serv_reset() calls mana_gd_suspend(), mana_gd_cleanup() destroys gc-\u003eservice_wq. If the subsequent mana_gd_resume() fails with -ETIMEDOUT or -EPROTO, the code falls through to mana_serv_rescan() which triggers pci_stop_and_remove_bus_device(). This invokes the PCI .remove callback (mana_gd_remove), which calls mana_gd_cleanup() a second time, attempting to destroy the already- freed workqueue. Fix this by NULL-checking gc-\u003eservice_wq in mana_gd_cleanup() and setting it to NULL after destruction.  Call stack of issue for reference: [Sat Feb 21 18:53:48 2026] Call Trace: [Sat Feb 21 18:53:48 2026]  \u003cTASK\u003e [Sat Feb 21 18:53:48 2026]  mana_gd_cleanup+0x33/0x70 [mana] [Sat Feb 21 18:53:48 2026]  mana_gd_remove+0x3a/0xc0 [mana] [Sat Feb 21 18:53:48 2026]  pci_device_remove+0x41/0xb0 [Sat Feb 21 18:53:48 2026]  device_remove+0x46/0x70 [Sat Feb 21 18:53:48 2026]  device_release_driver_internal+0x1e3/0x250 [Sat Feb 21 18:53:48 2026]  device_release_driver+0x12/0x20 [Sat Feb 21 18:53:48 2026]  pci_stop_bus_device+0x6a/0x90 [Sat Feb 21 18:53:48 2026]  pci_stop_and_remove_bus_device+0x13/0x30 [Sat Feb 21 18:53:48 2026]  mana_do_service+0x180/0x290 [mana] [Sat Feb 21 18:53:48 2026]  mana_serv_func+0x24/0x50 [mana] [Sat Feb 21 18:53:48 2026]  process_one_work+0x190/0x3d0 [Sat Feb 21 18:53:48 2026]  worker_thread+0x16e/0x2e0 [Sat Feb 21 18:53:48 2026]  kthread+0xf7/0x130 [Sat Feb 21 18:53:48 2026]  ? __pfx_worker_thread+0x10/0x10 [Sat Feb 21 18:53:48 2026]  ? __pfx_kthread+0x10/0x10 [Sat Feb 21 18:53:48 2026]  ret_from_fork+0x269/0x350 [Sat Feb 21 18:53:48 2026]  ? __pfx_kthread+0x10/0x10 [Sat Feb 21 18:53:48 2026]  ret_from_fork_asm+0x1a/0x30 [Sat Feb 21 18:53:48 2026]  \u003c/TASK\u003e","modified":"2026-08-27T23:06:05.732084293Z","published":"2026-05-06T12:16:48.930Z","upstream":["CVE-2026-43276"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-43276"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.19.6-1"}]}],"versions":["6.12.100-1","6.12.101-1","6.12.105-1","6.12.38-1","6.12.41-1","6.12.43-1","6.12.43-1~bpo12+1","6.12.48-1","6.12.57-1","6.12.57-1~bpo12+1","6.12.63-1","6.12.63-1~bpo12+1","6.12.69-1","6.12.69-1~bpo12+1","6.12.73-1","6.12.73-1~bpo12+1","6.12.74-1","6.12.74-2","6.12.74-2~bpo12+1","6.12.85-1","6.12.85-1~bpo12+1","6.12.86-1","6.12.86-1~bpo12+1","6.12.88-1","6.12.88-1~bpo12+1","6.12.90-1","6.12.90-1~bpo12+1","6.12.90-2","6.12.90-2~bpo12+1","6.12.94-1","6.12.94-1~bpo12+1","6.12.95-1","6.12.95-1~bpo12+1","6.12.96-1","6.13.10-1~exp1","6.13.11-1~exp1","6.13.2-1~exp1","6.13.3-1~exp1","6.13.4-1~exp1","6.13.5-1~exp1","6.13.6-1~exp1","6.13.7-1~exp1","6.13.8-1~exp1","6.13.9-1~exp1","6.13~rc6-1~exp1","6.13~rc7-1~exp1","6.14.3-1~exp1","6.14.5-1~exp1","6.14.6-1~exp1","6.15-1~exp1","6.15.1-1~exp1","6.15.2-1~exp1","6.15.3-1~exp1","6.15.4-1~exp1","6.15.5-1~exp1","6.15.6-1~exp1","6.15~rc7-1~exp1","6.16-1~exp1","6.16.1-1~exp1","6.16.10-1","6.16.11-1","6.16.12-1","6.16.12-1~bpo13+1","6.16.12-2","6.16.3-1","6.16.3-1~bpo13+1","6.16.5-1","6.16.6-1","6.16.7-1","6.16.8-1","6.16.9-1","6.16~rc7-1~exp1","6.17.10-1","6.17.11-1","6.17.12-1","6.17.13-1","6.17.13-1~bpo13+1","6.17.2-1~exp1","6.17.5-1~exp1","6.17.6-1","6.17.7-1","6.17.7-2","6.17.8-1","6.17.8-1~bpo13+1","6.17.9-1","6.18.1-1~exp1","6.18.10-1","6.18.12-1","6.18.12-1~bpo13+1","6.18.13-1","6.18.14-1","6.18.15-1","6.18.15-1~bpo13+1","6.18.2-1~exp1","6.18.3-1","6.18.5-1","6.18.5-1~bpo13+1","6.18.8-1","6.18.9-1","6.18.9-1~bpo13+1","6.18~rc4-1~exp1","6.18~rc4-1~exp2","6.18~rc5-1~exp1","6.18~rc6-1~exp1","6.18~rc7-1~exp1","6.19-1~exp1","6.19.2-1~exp1","6.19.3-1~exp1","6.19.4-1~exp1","6.19.5-1~exp1","6.19~rc4-1~exp1","6.19~rc5-1~exp1","6.19~rc6-1~exp1","6.19~rc7-1~exp1","6.19~rc8-1~exp1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-43276.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}