{"api_version":"1","generated_at":"2026-07-24T20:05:33+00:00","cve":"CVE-2025-39947","urls":{"html":"https://cve.report/CVE-2025-39947","api":"https://cve.report/api/cve/CVE-2025-39947.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2025-39947","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-39947"},"summary":{"title":"net/mlx5e: Harden uplink netdev access against device unbind","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Harden uplink netdev access against device unbind\n\nThe function mlx5_uplink_netdev_get() gets the uplink netdevice\npointer from mdev->mlx5e_res.uplink_netdev. However, the netdevice can\nbe removed and its pointer cleared when unbound from the mlx5_core.eth\ndriver. This results in a NULL pointer, causing a kernel panic.\n\n BUG: unable to handle page fault for address: 0000000000001300\n at RIP: 0010:mlx5e_vport_rep_load+0x22a/0x270 [mlx5_core]\n Call Trace:\n  <TASK>\n  mlx5_esw_offloads_rep_load+0x68/0xe0 [mlx5_core]\n  esw_offloads_enable+0x593/0x910 [mlx5_core]\n  mlx5_eswitch_enable_locked+0x341/0x420 [mlx5_core]\n  mlx5_devlink_eswitch_mode_set+0x17e/0x3a0 [mlx5_core]\n  devlink_nl_eswitch_set_doit+0x60/0xd0\n  genl_family_rcv_msg_doit+0xe0/0x130\n  genl_rcv_msg+0x183/0x290\n  netlink_rcv_skb+0x4b/0xf0\n  genl_rcv+0x24/0x40\n  netlink_unicast+0x255/0x380\n  netlink_sendmsg+0x1f3/0x420\n  __sock_sendmsg+0x38/0x60\n  __sys_sendto+0x119/0x180\n  do_syscall_64+0x53/0x1d0\n  entry_SYSCALL_64_after_hwframe+0x4b/0x53\n\nEnsure the pointer is valid before use by checking it for NULL. If it\nis valid, immediately call netdev_hold() to take a reference, and\npreventing the netdevice from being freed while it is in use.","state":"PUBLISHED","assigner":"Linux","published_at":"2025-10-04 08:15:47","updated_at":"2026-04-06 13:32:39"},"problem_types":["CWE-476"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/2cb17c88edd3a1c7aa6bc880dcdb35a6866fcb2e","name":"https://git.kernel.org/stable/c/2cb17c88edd3a1c7aa6bc880dcdb35a6866fcb2e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6b4be64fd9fec16418f365c2d8e47a7566e9eba5","name":"https://git.kernel.org/stable/c/6b4be64fd9fec16418f365c2d8e47a7566e9eba5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d1f3db4e7a3be29fc17f01850f162363f919370d","name":"https://git.kernel.org/stable/c/d1f3db4e7a3be29fc17f01850f162363f919370d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8df354eb2dd63d111ed5ae2e956e0dbb22bcf93b","name":"https://git.kernel.org/stable/c/8df354eb2dd63d111ed5ae2e956e0dbb22bcf93b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-39947","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-39947","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7a9fb35e8c3a67145fca262c304de65cb2f83abf 2cb17c88edd3a1c7aa6bc880dcdb35a6866fcb2e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7a9fb35e8c3a67145fca262c304de65cb2f83abf d1f3db4e7a3be29fc17f01850f162363f919370d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7a9fb35e8c3a67145fca262c304de65cb2f83abf 8df354eb2dd63d111ed5ae2e956e0dbb22bcf93b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7a9fb35e8c3a67145fca262c304de65cb2f83abf 6b4be64fd9fec16418f365c2d8e47a7566e9eba5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.13","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.13 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.108 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.49 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.16.9 6.16.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.17 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2025","cve_id":"39947","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/en_rep.c","drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c","drivers/net/ethernet/mellanox/mlx5/core/lib/mlx5.h","include/linux/mlx5/driver.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2cb17c88edd3a1c7aa6bc880dcdb35a6866fcb2e","status":"affected","version":"7a9fb35e8c3a67145fca262c304de65cb2f83abf","versionType":"git"},{"lessThan":"d1f3db4e7a3be29fc17f01850f162363f919370d","status":"affected","version":"7a9fb35e8c3a67145fca262c304de65cb2f83abf","versionType":"git"},{"lessThan":"8df354eb2dd63d111ed5ae2e956e0dbb22bcf93b","status":"affected","version":"7a9fb35e8c3a67145fca262c304de65cb2f83abf","versionType":"git"},{"lessThan":"6b4be64fd9fec16418f365c2d8e47a7566e9eba5","status":"affected","version":"7a9fb35e8c3a67145fca262c304de65cb2f83abf","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/mellanox/mlx5/core/en_rep.c","drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c","drivers/net/ethernet/mellanox/mlx5/core/lib/mlx5.h","include/linux/mlx5/driver.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.13"},{"lessThan":"5.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.108","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.49","versionType":"semver"},{"lessThanOrEqual":"6.16.*","status":"unaffected","version":"6.16.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.17","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.108","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.49","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.16.9","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.17","versionStartIncluding":"5.13","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Harden uplink netdev access against device unbind\n\nThe function mlx5_uplink_netdev_get() gets the uplink netdevice\npointer from mdev->mlx5e_res.uplink_netdev. However, the netdevice can\nbe removed and its pointer cleared when unbound from the mlx5_core.eth\ndriver. This results in a NULL pointer, causing a kernel panic.\n\n BUG: unable to handle page fault for address: 0000000000001300\n at RIP: 0010:mlx5e_vport_rep_load+0x22a/0x270 [mlx5_core]\n Call Trace:\n  <TASK>\n  mlx5_esw_offloads_rep_load+0x68/0xe0 [mlx5_core]\n  esw_offloads_enable+0x593/0x910 [mlx5_core]\n  mlx5_eswitch_enable_locked+0x341/0x420 [mlx5_core]\n  mlx5_devlink_eswitch_mode_set+0x17e/0x3a0 [mlx5_core]\n  devlink_nl_eswitch_set_doit+0x60/0xd0\n  genl_family_rcv_msg_doit+0xe0/0x130\n  genl_rcv_msg+0x183/0x290\n  netlink_rcv_skb+0x4b/0xf0\n  genl_rcv+0x24/0x40\n  netlink_unicast+0x255/0x380\n  netlink_sendmsg+0x1f3/0x420\n  __sock_sendmsg+0x38/0x60\n  __sys_sendto+0x119/0x180\n  do_syscall_64+0x53/0x1d0\n  entry_SYSCALL_64_after_hwframe+0x4b/0x53\n\nEnsure the pointer is valid before use by checking it for NULL. If it\nis valid, immediately call netdev_hold() to take a reference, and\npreventing the netdevice from being freed while it is in use."}],"providerMetadata":{"dateUpdated":"2025-10-04T07:31:08.636Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/2cb17c88edd3a1c7aa6bc880dcdb35a6866fcb2e"},{"url":"https://git.kernel.org/stable/c/d1f3db4e7a3be29fc17f01850f162363f919370d"},{"url":"https://git.kernel.org/stable/c/8df354eb2dd63d111ed5ae2e956e0dbb22bcf93b"},{"url":"https://git.kernel.org/stable/c/6b4be64fd9fec16418f365c2d8e47a7566e9eba5"}],"title":"net/mlx5e: Harden uplink netdev access against device unbind","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2025-39947","datePublished":"2025-10-04T07:31:08.636Z","dateReserved":"2025-04-16T07:20:57.148Z","dateUpdated":"2025-10-04T07:31:08.636Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2025-10-04 08:15:47","lastModifiedDate":"2026-04-06 13:32:39","problem_types":["CWE-476"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.6.108","matchCriteriaId":"84042552-3154-4D6D-94FE-7B09EE057C35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.49","matchCriteriaId":"CAA033E9-A2C5-4976-A83E-9804D8FB827F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.16.9","matchCriteriaId":"638DD910-1189-4F5E-98BF-2D436B695112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*","matchCriteriaId":"327D22EF-390B-454C-BD31-2ED23C998A1C"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*","matchCriteriaId":"C730CD9A-D969-4A8E-9522-162AAF7C0EE9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*","matchCriteriaId":"39982C4B-716E-4B2F-8196-FA301F47807D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*","matchCriteriaId":"340BEEA9-D70D-4290-B502-FBB1032353B1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*","matchCriteriaId":"47E4C5C0-079F-4838-971B-8C503D48FCC2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.17:rc6:*:*:*:*:*:*","matchCriteriaId":"5A4516A6-C12E-42A4-8C0E-68AEF3264504"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"39947","Ordinal":"1","Title":"net/mlx5e: Harden uplink netdev access against device unbind","CVE":"CVE-2025-39947","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"39947","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Harden uplink netdev access against device unbind\n\nThe function mlx5_uplink_netdev_get() gets the uplink netdevice\npointer from mdev->mlx5e_res.uplink_netdev. However, the netdevice can\nbe removed and its pointer cleared when unbound from the mlx5_core.eth\ndriver. This results in a NULL pointer, causing a kernel panic.\n\n BUG: unable to handle page fault for address: 0000000000001300\n at RIP: 0010:mlx5e_vport_rep_load+0x22a/0x270 [mlx5_core]\n Call Trace:\n  <TASK>\n  mlx5_esw_offloads_rep_load+0x68/0xe0 [mlx5_core]\n  esw_offloads_enable+0x593/0x910 [mlx5_core]\n  mlx5_eswitch_enable_locked+0x341/0x420 [mlx5_core]\n  mlx5_devlink_eswitch_mode_set+0x17e/0x3a0 [mlx5_core]\n  devlink_nl_eswitch_set_doit+0x60/0xd0\n  genl_family_rcv_msg_doit+0xe0/0x130\n  genl_rcv_msg+0x183/0x290\n  netlink_rcv_skb+0x4b/0xf0\n  genl_rcv+0x24/0x40\n  netlink_unicast+0x255/0x380\n  netlink_sendmsg+0x1f3/0x420\n  __sock_sendmsg+0x38/0x60\n  __sys_sendto+0x119/0x180\n  do_syscall_64+0x53/0x1d0\n  entry_SYSCALL_64_after_hwframe+0x4b/0x53\n\nEnsure the pointer is valid before use by checking it for NULL. If it\nis valid, immediately call netdev_hold() to take a reference, and\npreventing the netdevice from being freed while it is in use.","Type":"Description","Title":"net/mlx5e: Harden uplink netdev access against device unbind"}]}}}