CVE-2024-40906 (GCVE-0-2024-40906)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:20 – Updated: 2025-11-03 21:57
VLAI?
Title
net/mlx5: Always stop health timer during driver removal
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Always stop health timer during driver removal Currently, if teardown_hca fails to execute during driver removal, mlx5 does not stop the health timer. Afterwards, mlx5 continue with driver teardown. This may lead to a UAF bug, which results in page fault Oops[1], since the health timer invokes after resources were freed. Hence, stop the health monitor even if teardown_hca fails. [1] mlx5_core 0000:18:00.0: E-Switch: Unload vfs: mode(LEGACY), nvfs(0), necvfs(0), active vports(0) mlx5_core 0000:18:00.0: E-Switch: Disable: mode(LEGACY), nvfs(0), necvfs(0), active vports(0) mlx5_core 0000:18:00.0: E-Switch: Disable: mode(LEGACY), nvfs(0), necvfs(0), active vports(0) mlx5_core 0000:18:00.0: E-Switch: cleanup mlx5_core 0000:18:00.0: wait_func:1155:(pid 1967079): TEARDOWN_HCA(0x103) timeout. Will cause a leak of a command resource mlx5_core 0000:18:00.0: mlx5_function_close:1288:(pid 1967079): tear_down_hca failed, skip cleanup BUG: unable to handle page fault for address: ffffa26487064230 PGD 100c00067 P4D 100c00067 PUD 100e5a067 PMD 105ed7067 PTE 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 0 PID: 0 Comm: swapper/0 Tainted: G OE ------- --- 6.7.0-68.fc38.x86_64 #1 Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0013.121520200651 12/15/2020 RIP: 0010:ioread32be+0x34/0x60 RSP: 0018:ffffa26480003e58 EFLAGS: 00010292 RAX: ffffa26487064200 RBX: ffff9042d08161a0 RCX: ffff904c108222c0 RDX: 000000010bbf1b80 RSI: ffffffffc055ddb0 RDI: ffffa26487064230 RBP: ffff9042d08161a0 R08: 0000000000000022 R09: ffff904c108222e8 R10: 0000000000000004 R11: 0000000000000441 R12: ffffffffc055ddb0 R13: ffffa26487064200 R14: ffffa26480003f00 R15: ffff904c108222c0 FS: 0000000000000000(0000) GS:ffff904c10800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffa26487064230 CR3: 00000002c4420006 CR4: 00000000007706f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <IRQ> ? __die+0x23/0x70 ? page_fault_oops+0x171/0x4e0 ? exc_page_fault+0x175/0x180 ? asm_exc_page_fault+0x26/0x30 ? __pfx_poll_health+0x10/0x10 [mlx5_core] ? __pfx_poll_health+0x10/0x10 [mlx5_core] ? ioread32be+0x34/0x60 mlx5_health_check_fatal_sensors+0x20/0x100 [mlx5_core] ? __pfx_poll_health+0x10/0x10 [mlx5_core] poll_health+0x42/0x230 [mlx5_core] ? __next_timer_interrupt+0xbc/0x110 ? __pfx_poll_health+0x10/0x10 [mlx5_core] call_timer_fn+0x21/0x130 ? __pfx_poll_health+0x10/0x10 [mlx5_core] __run_timers+0x222/0x2c0 run_timer_softirq+0x1d/0x40 __do_softirq+0xc9/0x2c8 __irq_exit_rcu+0xa6/0xc0 sysvec_apic_timer_interrupt+0x72/0x90 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:cpuidle_enter_state+0xcc/0x440 ? cpuidle_enter_state+0xbd/0x440 cpuidle_enter+0x2d/0x40 do_idle+0x20d/0x270 cpu_startup_entry+0x2a/0x30 rest_init+0xd0/0xd0 arch_call_rest_init+0xe/0x30 start_kernel+0x709/0xa90 x86_64_start_reservations+0x18/0x30 x86_64_start_kernel+0x96/0xa0 secondary_startup_64_no_verify+0x18f/0x19b ---[ end trace 0000000000000000 ]---
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 9b98d395b85dd042fe83fb696b1ac02e6c93a520 , < e7d4485d47839f4d1284592ae242c4e65b2810a9 (git)
Affected: 9b98d395b85dd042fe83fb696b1ac02e6c93a520 , < 6ccada6ffb42e0ac75e3db06d41baf5a7f483f8a (git)
Affected: 9b98d395b85dd042fe83fb696b1ac02e6c93a520 , < e6777ae0bf6fd5bc626bb051c8c93e3c8198a3f8 (git)
Affected: 9b98d395b85dd042fe83fb696b1ac02e6c93a520 , < c8b3f38d2dae0397944814d691a419c451f9906f (git)
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    Linux Linux Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.1.95 , ≤ 6.1.* (semver)
Unaffected: 6.6.35 , ≤ 6.6.* (semver)
Unaffected: 6.9.6 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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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 ]---\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-12-19T09:07:44.725Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-40906\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-19T09:07:44.725Z\", \"dateReserved\": \"2024-07-12T12:17:45.580Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-12T12:20:46.485Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.