{"id":"DEBIAN-CVE-2025-38126","details":"In the Linux kernel, the following vulnerability has been resolved:  net: stmmac: make sure that ptp_rate is not 0 before configuring timestamping  The stmmac platform drivers that do not open-code the clk_ptp_rate value after having retrieved the default one from the device-tree can end up with 0 in clk_ptp_rate (as clk_get_rate can return 0). It will eventually propagate up to PTP initialization when bringing up the interface, leading to a divide by 0:   Division by zero in kernel.  CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.12.30-00001-g48313bd5768a #22  Hardware name: STM32 (Device Tree Support)  Call trace:   unwind_backtrace from show_stack+0x18/0x1c   show_stack from dump_stack_lvl+0x6c/0x8c   dump_stack_lvl from Ldiv0_64+0x8/0x18   Ldiv0_64 from stmmac_init_tstamp_counter+0x190/0x1a4   stmmac_init_tstamp_counter from stmmac_hw_setup+0xc1c/0x111c   stmmac_hw_setup from __stmmac_open+0x18c/0x434   __stmmac_open from stmmac_open+0x3c/0xbc   stmmac_open from __dev_open+0xf4/0x1ac   __dev_open from __dev_change_flags+0x1cc/0x224   __dev_change_flags from dev_change_flags+0x24/0x60   dev_change_flags from ip_auto_config+0x2e8/0x11a0   ip_auto_config from do_one_initcall+0x84/0x33c   do_one_initcall from kernel_init_freeable+0x1b8/0x214   kernel_init_freeable from kernel_init+0x24/0x140   kernel_init from ret_from_fork+0x14/0x28  Exception stack(0xe0815fb0 to 0xe0815ff8)  Prevent this division by 0 by adding an explicit check and error log about the actual issue. While at it, remove the same check from stmmac_ptp_register, which then becomes duplicate","modified":"2026-09-01T16:06:13.752235892Z","published":"2025-07-03T09:15:26.800Z","upstream":["CVE-2025-38126"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-38126"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.147-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.115-1","6.1.119-1","6.1.123-1","6.1.124-1","6.1.128-1","6.1.129-1","6.1.133-1","6.1.135-1","6.1.137-1","6.1.139-1","6.1.140-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38126.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.35-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38126.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.12.35-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-38126.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:N/I:N/A:H"}]}