{"id":"CVE-2024-38608","title":"net/mlx5e: Fix netif state handling","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix netif state handling\n\nmlx5e_suspend cleans resources only if netif_device_present() returns\ntrue. However, mlx5e_resume changes the state of netif, via\nm…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 2c3b5beec46ab0d77c94828eb15170b333ae769a < 70eca80d98a44f47cd1633d0c20bda8ae546b4d1","Linux >= 2c3b5beec46ab0d77c94828eb15170b333ae769a < f7e6cfb864a53af71c5cc904f1cc22215d68f5c6","Linux >= 2c3b5beec46ab0d77c94828eb15170b333ae769a < 3d5918477f94e4c2f064567875c475468e264644","Linux 4.12"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-06-20T19:44:05.361644Z"},"published":"2024-06-19","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:34:51.423Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-38608","references":[{"url":"https://git.kernel.org/stable/c/70eca80d98a44f47cd1633d0c20bda8ae546b4d1"},{"url":"https://git.kernel.org/stable/c/f7e6cfb864a53af71c5cc904f1cc22215d68f5c6"},{"url":"https://git.kernel.org/stable/c/3d5918477f94e4c2f064567875c475468e264644"}],"tags":["cve.org"],"epss":0.00216,"epssPercentile":0.11356,"ingestedAt":"2026-10-21T12:48:53.737Z","slug":"CVE-2024-38608","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix netif state handling\n\nmlx5e_suspend cleans resources only if netif_device_present() returns\ntrue. However, mlx5e_resume changes the state of netif, via\nmlx5e_nic_enable, only if reg_state == NETREG_REGISTERED.\nIn the below case, the above leads to NULL-ptr Oops[1] and memory\nleaks:\n\nmlx5e_probe\n _mlx5e_resume\n  mlx5e_attach_netdev\n   mlx5e_nic_enable  <-- netdev not reg, not calling netif_device_attach()\n  register_netdev <-- failed for some reason.\nERROR_FLOW:\n _mlx5e_suspend <-- netif_device_present return false, resources aren't freed :(\n\nHence, clean resources in this case as well.\n\n[1]\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nPGD 0 P4D 0\nOops: 0010 [#1] SMP\nCPU: 2 PID: 9345 Comm: test-ovs-ct-gen Not tainted 6.5.0_for_upstream_min_debug_2023_09_05_16_01 #1\nHardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\nRIP: 0010:0x0\nCode: Unable to access opcode bytes at0xffffffffffffffd6.\nRSP: 0018:ffff888178aaf758 EFLAGS: 00010246\nCall Trace:\n <TASK>\n ? __die+0x20/0x60\n ? page_fault_oops+0x14c/0x3c0\n ? exc_page_fault+0x75/0x140\n ? asm_exc_page_fault+0x22/0x30\n notifier_call_chain+0x35/0xb0\n blocking_notifier_call_chain+0x3d/0x60\n mlx5_blocking_notifier_call_chain+0x22/0x30 [mlx5_core]\n mlx5_core_uplink_netdev_event_replay+0x3e/0x60 [mlx5_core]\n mlx5_mdev_netdev_track+0x53/0x60 [mlx5_ib]\n mlx5_ib_roce_init+0xc3/0x340 [mlx5_ib]\n __mlx5_ib_add+0x34/0xd0 [mlx5_ib]\n mlx5r_probe+0xe1/0x210 [mlx5_ib]\n ? auxiliary_match_id+0x6a/0x90\n auxiliary_bus_probe+0x38/0x80\n ? driver_sysfs_add+0x51/0x80\n really_probe+0xc9/0x3e0\n ? driver_probe_device+0x90/0x90\n __driver_probe_device+0x80/0x160\n driver_probe_device+0x1e/0x90\n __device_attach_driver+0x7d/0x100\n bus_for_each_drv+0x80/0xd0\n __device_attach+0xbc/0x1f0\n bus_probe_device+0x86/0xa0\n device_add+0x637/0x840\n __auxiliary_device_add+0x3b/0xa0\n add_adev+0xc9/0x140 [mlx5_core]\n mlx5_rescan_drivers_locked+0x22a/0x310 [mlx5_core]\n mlx5_register_device+0x53/0xa0 [mlx5_core]\n mlx5_init_one_devl_locked+0x5c4/0x9c0 [mlx5_core]\n mlx5_init_one+0x3b/0x60 [mlx5_core]\n probe_one+0x44c/0x730 [mlx5_core]\n local_pci_probe+0x3e/0x90\n pci_device_probe+0xbf/0x210\n ? kernfs_create_link+0x5d/0xa0\n ? sysfs_do_create_link_sd+0x60/0xc0\n really_probe+0xc9/0x3e0\n ? driver_probe_device+0x90/0x90\n __driver_probe_device+0x80/0x160\n driver_probe_device+0x1e/0x90\n __device_attach_driver+0x7d/0x100\n bus_for_each_drv+0x80/0xd0\n __device_attach+0xbc/0x1f0\n pci_bus_add_device+0x54/0x80\n pci_iov_add_virtfn+0x2e6/0x320\n sriov_enable+0x208/0x420\n mlx5_core_sriov_configure+0x9e/0x200 [mlx5_core]\n sriov_numvfs_store+0xae/0x1a0\n kernfs_fop_write_iter+0x10c/0x1a0\n vfs_write+0x291/0x3c0\n ksys_write+0x5f/0xe0\n do_syscall_64+0x3d/0x90\n entry_SYSCALL_64_after_hwframe+0x46/0xb0\n CR2: 0000000000000000\n ---[ end trace 0000000000000000  ]---\n\n## Affected\n\n- `Linux >= 2c3b5beec46ab0d77c94828eb15170b333ae769a < 70eca80d98a44f47cd1633d0c20bda8ae546b4d1`\n- `Linux >= 2c3b5beec46ab0d77c94828eb15170b333ae769a < f7e6cfb864a53af71c5cc904f1cc22215d68f5c6`\n- `Linux >= 2c3b5beec46ab0d77c94828eb15170b333ae769a < 3d5918477f94e4c2f064567875c475468e264644`\n- `Linux 4.12`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}