{"id":"CVE-2025-38683","state":"PUBLISHED","title":"hv_netvsc: Fix panic during namespace deletion with VF","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nhv_netvsc: Fix panic during namespace deletion with VF\n\nThe existing code move the VF NIC to new namespace when NETDEV_REGISTER is\nreceived on netvsc NIC. During deletion of the namespace,\ndefault_device_exit_batch() >> default_device_exit_net() is called. When\nnetvsc NIC is moved back and registered to the default namespace, it\nautomatically brings VF NIC back to the default namespace. This will cause\nthe default_device_exit_net() >> for_each_netdev_safe loop unable to detect\nthe list end, and hit NULL ptr:\n\n[  231.449420] mana 7870:00:00.0 enP30832s1: Moved VF to namespace with: eth0\n[  231.449656] BUG: kernel NULL pointer dereference, address: 0000000000000010\n[  231.450246] #PF: supervisor read access in kernel mode\n[  231.450579] #PF: error_code(0x0000) - not-present page\n[  231.450916] PGD 17b8a8067 P4D 0\n[  231.451163] Oops: Oops: 0000 [#1] SMP NOPTI\n[  231.451450] CPU: 82 UID: 0 PID: 1394 Comm: kworker/u768:1 Not tainted 6.16.0-rc4+ #3 VOLUNTARY\n[  231.452042] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 11/21/2024\n[  231.452692] Workqueue: netns cleanup_net\n[  231.452947] RIP: 0010:default_device_exit_batch+0x16c/0x3f0\n[  231.453326] Code: c0 0c f5 b3 e8 d5 db fe ff 48 85 c0 74 15 48 c7 c2 f8 fd ca b2 be 10 00 00 00 48 8d 7d c0 e8 7b 77 25 00 49 8b 86 28 01 00 00 <48> 8b 50 10 4c 8b 2a 4c 8d 62 f0 49 83 ed 10 4c 39 e0 0f 84 d6 00\n[  231.454294] RSP: 0018:ff75fc7c9bf9fd00 EFLAGS: 00010246\n[  231.454610] RAX: 0000000000000000 RBX: 0000000000000002 RCX: 61c8864680b583eb\n[  231.455094] RDX: ff1fa9f71462d800 RSI: ff75fc7c9bf9fd38 RDI: 0000000030766564\n[  231.455686] RBP: ff75fc7c9bf9fd78 R08: 0000000000000000 R09: 0000000000000000\n[  231.456126] R10: 0000000000000001 R11: 0000000000000004 R12: ff1fa9f70088e340\n[  231.456621] R13: ff1fa9f70088e340 R14: ffffffffb3f50c20 R15: ff1fa9f7103e6340\n[  231.457161] FS:  0000000000000000(0000) GS:ff1faa6783a08000(0000) knlGS:0000000000000000\n[  231.457707] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  231.458031] CR2: 0000000000000010 CR3: 0000000179ab2006 CR4: 0000000000b73ef0\n[  231.458434] Call Trace:\n[  231.458600]  <TASK>\n[  231.458777]  ops_undo_list+0x100/0x220\n[  231.459015]  cleanup_net+0x1b8/0x300\n[  231.459285]  process_one_work+0x184/0x340\n\nTo fix it, move the ns change to a workqueue, and take rtnl_lock to avoid\nchanging the netdev list when default_device_exit_net() is using it.","publishedAt":"2025-09-04T15:32:38.215Z","updatedAt":"2026-05-23T16:00:21.541Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3eb6aa870057da9f1304db660f68b9c2eb7e856d","status":"affected","lessThan":"3ca41ab55d23a0aa71661a5a56a8f06c11db90dc","versionType":"git"},{"version":"b7a396f76ada277d049558db648389456458af65","status":"affected","lessThan":"3467c4ebb334658c6fcf3eabb64a6e8b2135e010","versionType":"git"},{"version":"4faa6e3e66b3251eb4bf5761d2f3f0f14095aaca","status":"affected","lessThan":"4eff1e57a8ef98d70451b94e8437e458b27dd234","versionType":"git"},{"version":"62c85b9a0dd7471a362170323e1211ad98ff7b4b","status":"affected","lessThan":"2a70cbd1aef8b8be39992ab7b776ce1390091774","versionType":"git"},{"version":"4c262801ea60c518b5bebc22a09f5b78b3147da2","status":"affected","lessThan":"d036104947176d030bec64792d54e1b4f4c7f318","versionType":"git"},{"version":"4c262801ea60c518b5bebc22a09f5b78b3147da2","status":"affected","lessThan":"5276896e6923ebe8c68573779d784aaf7d987cce","versionType":"git"},{"version":"4c262801ea60c518b5bebc22a09f5b78b3147da2","status":"affected","lessThan":"4293f6c5ccf735b26afeb6825def14d830e0367b","versionType":"git"},{"version":"4c262801ea60c518b5bebc22a09f5b78b3147da2","status":"affected","lessThan":"33caa208dba6fa639e8a92fd0c8320b652e5550c","versionType":"git"},{"version":"7abd221a55a61b6b2bf0e80f850bfc0ae75c7e01","status":"affected","versionType":"git"},{"version":"31a38a908c98aebc7a1104dab5f1ba199f234b7b","status":"affected","versionType":"git"},{"version":"04d748d4bd2d86739b159563f257e3dc5492c88d","status":"affected","versionType":"git"},{"version":"5.10.229","status":"affected","lessThan":"5.10.241","versionType":"semver"},{"version":"5.15.170","status":"affected","lessThan":"5.15.190","versionType":"semver"},{"version":"6.1.115","status":"affected","lessThan":"6.1.149","versionType":"semver"},{"version":"6.6.59","status":"affected","lessThan":"6.6.103","versionType":"semver"},{"version":"4.19.323","status":"affected","lessThan":"4.20","versionType":"semver"},{"version":"5.4.285","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"6.11.6","status":"affected","lessThan":"6.12","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/hyperv/hyperv_net.h","drivers/net/hyperv/netvsc_drv.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.12","versionType":"semver"},{"version":"5.10.241","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.190","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.149","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.103","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.43","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.15.11","status":"unaffected","lessThanOrEqual":"6.15.*","versionType":"semver"},{"version":"6.16.2","status":"unaffected","lessThanOrEqual":"6.16.*","versionType":"semver"},{"version":"6.17","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/hyperv/hyperv_net.h","drivers/net/hyperv/netvsc_drv.c"]}],"references":["https://git.kernel.org/stable/c/3ca41ab55d23a0aa71661a5a56a8f06c11db90dc","https://git.kernel.org/stable/c/3467c4ebb334658c6fcf3eabb64a6e8b2135e010","https://git.kernel.org/stable/c/4eff1e57a8ef98d70451b94e8437e458b27dd234","https://git.kernel.org/stable/c/2a70cbd1aef8b8be39992ab7b776ce1390091774","https://git.kernel.org/stable/c/d036104947176d030bec64792d54e1b4f4c7f318","https://git.kernel.org/stable/c/5276896e6923ebe8c68573779d784aaf7d987cce","https://git.kernel.org/stable/c/4293f6c5ccf735b26afeb6825def14d830e0367b","https://git.kernel.org/stable/c/33caa208dba6fa639e8a92fd0c8320b652e5550c","https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html","https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html","https://cert-portal.siemens.com/productcert/html/ssa-032379.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:09.358Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/38xxx/CVE-2025-38683.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-38683","state":"PUBLISHED","datePublished":"2025-09-04T15:32:38.215Z","dateUpdated":"2026-05-23T16:00:21.541Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T04:51:24.032Z"},"containers":{"cna":{"title":"hv_netvsc: Fix panic during namespace deletion with VF","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nhv_netvsc: Fix panic during namespace deletion with VF\n\nThe existing code move the VF NIC to new namespace when NETDEV_REGISTER is\nreceived on netvsc NIC. During deletion of the namespace,\ndefault_device_exit_batch() >> default_device_exit_net() is called. When\nnetvsc NIC is moved back and registered to the default namespace, it\nautomatically brings VF NIC back to the default namespace. This will cause\nthe default_device_exit_net() >> for_each_netdev_safe loop unable to detect\nthe list end, and hit NULL ptr:\n\n[  231.449420] mana 7870:00:00.0 enP30832s1: Moved VF to namespace with: eth0\n[  231.449656] BUG: kernel NULL pointer dereference, address: 0000000000000010\n[  231.450246] #PF: supervisor read access in kernel mode\n[  231.450579] #PF: error_code(0x0000) - not-present page\n[  231.450916] PGD 17b8a8067 P4D 0\n[  231.451163] Oops: Oops: 0000 [#1] SMP NOPTI\n[  231.451450] CPU: 82 UID: 0 PID: 1394 Comm: kworker/u768:1 Not tainted 6.16.0-rc4+ #3 VOLUNTARY\n[  231.452042] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 11/21/2024\n[  231.452692] Workqueue: netns cleanup_net\n[  231.452947] RIP: 0010:default_device_exit_batch+0x16c/0x3f0\n[  231.453326] Code: c0 0c f5 b3 e8 d5 db fe ff 48 85 c0 74 15 48 c7 c2 f8 fd ca b2 be 10 00 00 00 48 8d 7d c0 e8 7b 77 25 00 49 8b 86 28 01 00 00 <48> 8b 50 10 4c 8b 2a 4c 8d 62 f0 49 83 ed 10 4c 39 e0 0f 84 d6 00\n[  231.454294] RSP: 0018:ff75fc7c9bf9fd00 EFLAGS: 00010246\n[  231.454610] RAX: 0000000000000000 RBX: 0000000000000002 RCX: 61c8864680b583eb\n[  231.455094] RDX: ff1fa9f71462d800 RSI: ff75fc7c9bf9fd38 RDI: 0000000030766564\n[  231.455686] RBP: ff75fc7c9bf9fd78 R08: 0000000000000000 R09: 0000000000000000\n[  231.456126] R10: 0000000000000001 R11: 0000000000000004 R12: ff1fa9f70088e340\n[  231.456621] R13: ff1fa9f70088e340 R14: ffffffffb3f50c20 R15: ff1fa9f7103e6340\n[  231.457161] FS:  0000000000000000(0000) GS:ff1faa6783a08000(0000) knlGS:0000000000000000\n[  231.457707] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  231.458031] CR2: 0000000000000010 CR3: 0000000179ab2006 CR4: 0000000000b73ef0\n[  231.458434] Call Trace:\n[  231.458600]  <TASK>\n[  231.458777]  ops_undo_list+0x100/0x220\n[  231.459015]  cleanup_net+0x1b8/0x300\n[  231.459285]  process_one_work+0x184/0x340\n\nTo fix it, move the ns change to a workqueue, and take rtnl_lock to avoid\nchanging the netdev list when default_device_exit_net() is using it."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"3eb6aa870057da9f1304db660f68b9c2eb7e856d","status":"affected","lessThan":"3ca41ab55d23a0aa71661a5a56a8f06c11db90dc","versionType":"git"},{"version":"b7a396f76ada277d049558db648389456458af65","status":"affected","lessThan":"3467c4ebb334658c6fcf3eabb64a6e8b2135e010","versionType":"git"},{"version":"4faa6e3e66b3251eb4bf5761d2f3f0f14095aaca","status":"affected","lessThan":"4eff1e57a8ef98d70451b94e8437e458b27dd234","versionType":"git"},{"version":"62c85b9a0dd7471a362170323e1211ad98ff7b4b","status":"affected","lessThan":"2a70cbd1aef8b8be39992ab7b776ce1390091774","versionType":"git"},{"version":"4c262801ea60c518b5bebc22a09f5b78b3147da2","status":"affected","lessThan":"d036104947176d030bec64792d54e1b4f4c7f318","versionType":"git"},{"version":"4c262801ea60c518b5bebc22a09f5b78b3147da2","status":"affected","lessThan":"5276896e6923ebe8c68573779d784aaf7d987cce","versionType":"git"},{"version":"4c262801ea60c518b5bebc22a09f5b78b3147da2","status":"affected","lessThan":"4293f6c5ccf735b26afeb6825def14d830e0367b","versionType":"git"},{"version":"4c262801ea60c518b5bebc22a09f5b78b3147da2","status":"affected","lessThan":"33caa208dba6fa639e8a92fd0c8320b652e5550c","versionType":"git"},{"version":"7abd221a55a61b6b2bf0e80f850bfc0ae75c7e01","status":"affected","versionType":"git"},{"version":"31a38a908c98aebc7a1104dab5f1ba199f234b7b","status":"affected","versionType":"git"},{"version":"04d748d4bd2d86739b159563f257e3dc5492c88d","status":"affected","versionType":"git"},{"version":"5.10.229","status":"affected","lessThan":"5.10.241","versionType":"semver"},{"version":"5.15.170","status":"affected","lessThan":"5.15.190","versionType":"semver"},{"version":"6.1.115","status":"affected","lessThan":"6.1.149","versionType":"semver"},{"version":"6.6.59","status":"affected","lessThan":"6.6.103","versionType":"semver"},{"version":"4.19.323","status":"affected","lessThan":"4.20","versionType":"semver"},{"version":"5.4.285","status":"affected","lessThan":"5.5","versionType":"semver"},{"version":"6.11.6","status":"affected","lessThan":"6.12","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/hyperv/hyperv_net.h","drivers/net/hyperv/netvsc_drv.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.12","versionType":"semver"},{"version":"5.10.241","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.190","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.149","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.103","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.43","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.15.11","status":"unaffected","lessThanOrEqual":"6.15.*","versionType":"semver"},{"version":"6.16.2","status":"unaffected","lessThanOrEqual":"6.16.*","versionType":"semver"},{"version":"6.17","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/hyperv/hyperv_net.h","drivers/net/hyperv/netvsc_drv.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/3ca41ab55d23a0aa71661a5a56a8f06c11db90dc"},{"url":"https://git.kernel.org/stable/c/3467c4ebb334658c6fcf3eabb64a6e8b2135e010"},{"url":"https://git.kernel.org/stable/c/4eff1e57a8ef98d70451b94e8437e458b27dd234"},{"url":"https://git.kernel.org/stable/c/2a70cbd1aef8b8be39992ab7b776ce1390091774"},{"url":"https://git.kernel.org/stable/c/d036104947176d030bec64792d54e1b4f4c7f318"},{"url":"https://git.kernel.org/stable/c/5276896e6923ebe8c68573779d784aaf7d987cce"},{"url":"https://git.kernel.org/stable/c/4293f6c5ccf735b26afeb6825def14d830e0367b"},{"url":"https://git.kernel.org/stable/c/33caa208dba6fa639e8a92fd0c8320b652e5550c"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-23T16:00:21.541Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.229","versionEndExcluding":"5.10.241"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.170","versionEndExcluding":"5.15.190"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.115","versionEndExcluding":"6.1.149"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.59","versionEndExcluding":"6.6.103"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartInclu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