{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-40906 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-40906 is a high-severity use after free vulnerability in Linux kernel, published on 12 Jul 2024. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2024-40906 and fix it if it is affected.\n\nWhat it is: CVE-2024-40906 is a high-severity use after free vulnerability in Linux kernel, published on 12 Jul 2024. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2024-40906 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2024-40906/ (Markdown: https://insights.sbomify.com/CVE-2024-40906/index.md)","id":"CVE-2024-40906","markdown":"https://insights.sbomify.com/CVE-2024-40906/index.md","name":"CVE-2024-40906","record":{"aliases":["BELL-CVE-2024-40906","DEBIAN-CVE-2024-40906","GHSA-jpp6-vjx7-xmp2","UBUNTU-CVE-2024-40906"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel driver","requires_auth":"low_privilege","summary":"A use-after-free vulnerability in the Linux kernel mlx5 driver allows a local attacker to cause a system crash during driver removal.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":7.8,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: Always stop health timer during driver removal\n\nCurrently, if teardown_hca fails to execute during driver removal, mlx5\ndoes not stop the health timer. Afterwards, mlx5 continue with driver\nteardown. This may lead to a UAF bug, which results in page fault\nOops[1], since the health timer invokes after resources were freed.\n\nHence, stop the health monitor even if teardown_hca fails.\n\n[1]\nmlx5_core 0000:18:00.0: E-Switch: Unload vfs: mode(LEGACY), nvfs(0), necvfs(0), active vports(0)\nmlx5_core 0000:18:00.0: E-Switch: Disable: mode(LEGACY), nvfs(0), necvfs(0), active vports(0)\nmlx5_core 0000:18:00.0: E-Switch: Disable: mode(LEGACY), nvfs(0), necvfs(0), active vports(0)\nmlx5_core 0000:18:00.0: E-Switch: cleanup\nmlx5_core 0000:18:00.0: wait_func:1155:(pid 1967079): TEARDOWN_HCA(0x103) timeout. Will cause a leak of a command resource\nmlx5_core 0000:18:00.0: mlx5_function_close:1288:(pid 1967079): tear_down_hca failed, skip cleanup\nBUG: unable to handle page fault for address: ffffa26487064230\nPGD 100c00067 P4D 100c00067 PUD 100e5a067 PMD 105ed7067 PTE 0\nOops: 0000 [#1] PREEMPT SMP PTI\nCPU: 0 PID: 0 Comm: swapper/0 Tainted: G           OE     -------  ---  6.7.0-68.fc38.x86_64 #1\nHardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0013.121520200651 12/15/2020\nRIP: 0010:ioread32be+0x34/0x60\nRSP: 0018:ffffa26480003e58 EFLAGS: 00010292\nRAX: ffffa26487064200 RBX: ffff9042d08161a0 RCX: ffff904c108222c0\nRDX: 000000010bbf1b80 RSI: ffffffffc055ddb0 RDI: ffffa26487064230\nRBP: ffff9042d08161a0 R08: 0000000000000022 R09: ffff904c108222e8\nR10: 0000000000000004 R11: 0000000000000441 R12: ffffffffc055ddb0\nR13: ffffa26487064200 R14: ffffa26480003f00 R15: ffff904c108222c0\nFS:  0000000000000000(0000) GS:ffff904c10800000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: ffffa26487064230 CR3: 00000002c4420006 CR4: 00000000007706f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nPKRU: 55555554\nCall Trace:\n \u003cIRQ\u003e\n ? __die+0x23/0x70\n ? page_fault_oops+0x171/0x4e0\n ? exc_page_fault+0x175/0x180\n ? asm_exc_page_fault+0x26/0x30\n ? __pfx_poll_health+0x10/0x10 [mlx5_core]\n ? __pfx_poll_health+0x10/0x10 [mlx5_core]\n ? ioread32be+0x34/0x60\n mlx5_health_check_fatal_sensors+0x20/0x100 [mlx5_core]\n ? __pfx_poll_health+0x10/0x10 [mlx5_core]\n poll_health+0x42/0x230 [mlx5_core]\n ? __next_timer_interrupt+0xbc/0x110\n ? __pfx_poll_health+0x10/0x10 [mlx5_core]\n call_timer_fn+0x21/0x130\n ? __pfx_poll_health+0x10/0x10 [mlx5_core]\n __run_timers+0x222/0x2c0\n run_timer_softirq+0x1d/0x40\n __do_softirq+0xc9/0x2c8\n __irq_exit_rcu+0xa6/0xc0\n sysvec_apic_timer_interrupt+0x72/0x90\n \u003c/IRQ\u003e\n \u003cTASK\u003e\n asm_sysvec_apic_timer_interrupt+0x1a/0x20\nRIP: 0010:cpuidle_enter_state+0xcc/0x440\n ? cpuidle_enter_state+0xbd/0x440\n cpuidle_enter+0x2d/0x40\n do_idle+0x20d/0x270\n cpu_startup_entry+0x2a/0x30\n rest_init+0xd0/0xd0\n arch_call_rest_init+0xe/0x30\n start_kernel+0x709/0xa90\n x86_64_start_reservations+0x18/0x30\n x86_64_start_kernel+0x96/0xa0\n secondary_startup_64_no_verify+0x18f/0x19b\n---[ end trace 0000000000000000 ]---","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"net/mlx5: Always stop health timer during driver removal","id":"CVE-2024-40906","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"use_after_free","year":"2024"},"n_packages":0,"n_references":4,"next":{"headline":"ionic: fix kernel panic in XDP_TX action","id":"CVE-2024-40907"},"packages":[],"prev":{"headline":"ipv6: fix possible race in __fib6_drop_pcpu_from()","id":"CVE-2024-40905"},"products":["Linux"],"published":"2024-07-12","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A use-after-free vulnerability in the Linux kernel mlx5 driver allows a local attacker to cause a system crash during driver removal.","url":"https://insights.sbomify.com/CVE-2024-40906/"}