{"id":"CVE-2025-40164","state":"PUBLISHED","title":"usbnet: Fix using smp_processor_id() in preemptible code warnings","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nusbnet: Fix using smp_processor_id() in preemptible code warnings\n\nSyzbot reported the following warning:\n\nBUG: using smp_processor_id() in preemptible [00000000] code: dhcpcd/2879\ncaller is usbnet_skb_return+0x74/0x490 drivers/net/usb/usbnet.c:331\nCPU: 1 UID: 0 PID: 2879 Comm: dhcpcd Not tainted 6.15.0-rc4-syzkaller-00098-g615dca38c2ea #0 PREEMPT(voluntary)\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120\n check_preemption_disabled+0xd0/0xe0 lib/smp_processor_id.c:49\n usbnet_skb_return+0x74/0x490 drivers/net/usb/usbnet.c:331\n usbnet_resume_rx+0x4b/0x170 drivers/net/usb/usbnet.c:708\n usbnet_change_mtu+0x1be/0x220 drivers/net/usb/usbnet.c:417\n __dev_set_mtu net/core/dev.c:9443 [inline]\n netif_set_mtu_ext+0x369/0x5c0 net/core/dev.c:9496\n netif_set_mtu+0xb0/0x160 net/core/dev.c:9520\n dev_set_mtu+0xae/0x170 net/core/dev_api.c:247\n dev_ifsioc+0xa31/0x18d0 net/core/dev_ioctl.c:572\n dev_ioctl+0x223/0x10e0 net/core/dev_ioctl.c:821\n sock_do_ioctl+0x19d/0x280 net/socket.c:1204\n sock_ioctl+0x42f/0x6a0 net/socket.c:1311\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:906 [inline]\n __se_sys_ioctl fs/ioctl.c:892 [inline]\n __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nFor historical and portability reasons, the netif_rx() is usually\nrun in the softirq or interrupt context, this commit therefore add\nlocal_bh_disable/enable() protection in the usbnet_resume_rx().","publishedAt":"2025-11-12T10:26:23.482Z","updatedAt":"2026-06-19T11:57:22.439Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"6635e52bc4165793aefd686962d912d73d323afe","versionType":"git"},{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"65d04291adf7c59338f87aab9c6fe0bfa9993e64","versionType":"git"},{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"f45fffae5e2549bd0a4670cc52a15ad54c9f121e","versionType":"git"},{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"17fbad93879e87a334062882b45fa727ba1b3dd7","versionType":"git"},{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"d1944bab8e0c1511f0cbf364aa06547735bb0ddb","versionType":"git"},{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"0134c7bff14bd50314a4f92b182850ddfc38e255","versionType":"git"},{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"327cd4b68b4398b6c24f10eb2b2533ffbfc10185","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/usbnet.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.7","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.199","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.162","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.122","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.5","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/usbnet.c"]}],"references":["https://git.kernel.org/stable/c/6635e52bc4165793aefd686962d912d73d323afe","https://git.kernel.org/stable/c/65d04291adf7c59338f87aab9c6fe0bfa9993e64","https://git.kernel.org/stable/c/f45fffae5e2549bd0a4670cc52a15ad54c9f121e","https://git.kernel.org/stable/c/17fbad93879e87a334062882b45fa727ba1b3dd7","https://git.kernel.org/stable/c/d1944bab8e0c1511f0cbf364aa06547735bb0ddb","https://git.kernel.org/stable/c/0134c7bff14bd50314a4f92b182850ddfc38e255","https://git.kernel.org/stable/c/327cd4b68b4398b6c24f10eb2b2533ffbfc10185"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:09.358Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/40xxx/CVE-2025-40164.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-40164","state":"PUBLISHED","datePublished":"2025-11-12T10:26:23.482Z","dateUpdated":"2026-06-19T11:57:22.439Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T07:20:57.176Z"},"containers":{"cna":{"title":"usbnet: Fix using smp_processor_id() in preemptible code warnings","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nusbnet: Fix using smp_processor_id() in preemptible code warnings\n\nSyzbot reported the following warning:\n\nBUG: using smp_processor_id() in preemptible [00000000] code: dhcpcd/2879\ncaller is usbnet_skb_return+0x74/0x490 drivers/net/usb/usbnet.c:331\nCPU: 1 UID: 0 PID: 2879 Comm: dhcpcd Not tainted 6.15.0-rc4-syzkaller-00098-g615dca38c2ea #0 PREEMPT(voluntary)\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120\n check_preemption_disabled+0xd0/0xe0 lib/smp_processor_id.c:49\n usbnet_skb_return+0x74/0x490 drivers/net/usb/usbnet.c:331\n usbnet_resume_rx+0x4b/0x170 drivers/net/usb/usbnet.c:708\n usbnet_change_mtu+0x1be/0x220 drivers/net/usb/usbnet.c:417\n __dev_set_mtu net/core/dev.c:9443 [inline]\n netif_set_mtu_ext+0x369/0x5c0 net/core/dev.c:9496\n netif_set_mtu+0xb0/0x160 net/core/dev.c:9520\n dev_set_mtu+0xae/0x170 net/core/dev_api.c:247\n dev_ifsioc+0xa31/0x18d0 net/core/dev_ioctl.c:572\n dev_ioctl+0x223/0x10e0 net/core/dev_ioctl.c:821\n sock_do_ioctl+0x19d/0x280 net/socket.c:1204\n sock_ioctl+0x42f/0x6a0 net/socket.c:1311\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:906 [inline]\n __se_sys_ioctl fs/ioctl.c:892 [inline]\n __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\nFor historical and portability reasons, the netif_rx() is usually\nrun in the softirq or interrupt context, this commit therefore add\nlocal_bh_disable/enable() protection in the usbnet_resume_rx()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"6635e52bc4165793aefd686962d912d73d323afe","versionType":"git"},{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"65d04291adf7c59338f87aab9c6fe0bfa9993e64","versionType":"git"},{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"f45fffae5e2549bd0a4670cc52a15ad54c9f121e","versionType":"git"},{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"17fbad93879e87a334062882b45fa727ba1b3dd7","versionType":"git"},{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"d1944bab8e0c1511f0cbf364aa06547735bb0ddb","versionType":"git"},{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"0134c7bff14bd50314a4f92b182850ddfc38e255","versionType":"git"},{"version":"43daa96b166c3cf5ff30dfac0c5efa2620e4beab","status":"affected","lessThan":"327cd4b68b4398b6c24f10eb2b2533ffbfc10185","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/usbnet.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.7","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.7","versionType":"semver"},{"version":"5.10.259","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.199","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.162","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.122","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.17.5","status":"unaffected","lessThanOrEqual":"6.17.*","versionType":"semver"},{"version":"6.18","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/usb/usbnet.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/6635e52bc4165793aefd686962d912d73d323afe"},{"url":"https://git.kernel.org/stable/c/65d04291adf7c59338f87aab9c6fe0bfa9993e64"},{"url":"https://git.kernel.org/stable/c/f45fffae5e2549bd0a4670cc52a15ad54c9f121e"},{"url":"https://git.kernel.org/stable/c/17fbad93879e87a334062882b45fa727ba1b3dd7"},{"url":"https://git.kernel.org/stable/c/d1944bab8e0c1511f0cbf364aa06547735bb0ddb"},{"url":"https://git.kernel.org/stable/c/0134c7bff14bd50314a4f92b182850ddfc38e255"},{"url":"https://git.kernel.org/stable/c/327cd4b68b4398b6c24f10eb2b2533ffbfc10185"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-19T11:57:22.439Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"5.10.259"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"5.15.199"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"6.1.162"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"6.6.122"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"6.12.64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"6.17.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7","versionEndExcluding":"6.18"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2025-40164","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-06-10T20:42:05.458823Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-11T18:44:19.209Z"}}]}}}