fkie_cve-2022-48811
Vulnerability from fkie_nvd
Published
2024-07-16 12:15
Modified
2024-11-21 07:34
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ibmvnic: don't release napi in __ibmvnic_open() If __ibmvnic_open() encounters an error such as when setting link state, it calls release_resources() which frees the napi structures needlessly. Instead, have __ibmvnic_open() only clean up the work it did so far (i.e. disable napi and irqs) and leave the rest to the callers. If caller of __ibmvnic_open() is ibmvnic_open(), it should release the resources immediately. If the caller is do_reset() or do_hard_reset(), they will release the resources on the next reset. This fixes following crash that occurred when running the drmgr command several times to add/remove a vnic interface: [102056] ibmvnic 30000003 env3: Disabling rx_scrq[6] irq [102056] ibmvnic 30000003 env3: Disabling rx_scrq[7] irq [102056] ibmvnic 30000003 env3: Replenished 8 pools Kernel attempted to read user page (10) - exploit attempt? (uid: 0) BUG: Kernel NULL pointer dereference on read at 0x00000010 Faulting instruction address: 0xc000000000a3c840 Oops: Kernel access of bad area, sig: 11 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries ... CPU: 9 PID: 102056 Comm: kworker/9:2 Kdump: loaded Not tainted 5.16.0-rc5-autotest-g6441998e2e37 #1 Workqueue: events_long __ibmvnic_reset [ibmvnic] NIP: c000000000a3c840 LR: c0080000029b5378 CTR: c000000000a3c820 REGS: c0000000548e37e0 TRAP: 0300 Not tainted (5.16.0-rc5-autotest-g6441998e2e37) MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28248484 XER: 00000004 CFAR: c0080000029bdd24 DAR: 0000000000000010 DSISR: 40000000 IRQMASK: 0 GPR00: c0080000029b55d0 c0000000548e3a80 c0000000028f0200 0000000000000000 ... NIP [c000000000a3c840] napi_enable+0x20/0xc0 LR [c0080000029b5378] __ibmvnic_open+0xf0/0x430 [ibmvnic] Call Trace: [c0000000548e3a80] [0000000000000006] 0x6 (unreliable) [c0000000548e3ab0] [c0080000029b55d0] __ibmvnic_open+0x348/0x430 [ibmvnic] [c0000000548e3b40] [c0080000029bcc28] __ibmvnic_reset+0x500/0xdf0 [ibmvnic] [c0000000548e3c60] [c000000000176228] process_one_work+0x288/0x570 [c0000000548e3d00] [c000000000176588] worker_thread+0x78/0x660 [c0000000548e3da0] [c0000000001822f0] kthread+0x1c0/0x1d0 [c0000000548e3e10] [c00000000000cf64] ret_from_kernel_thread+0x5c/0x64 Instruction dump: 7d2948f8 792307e0 4e800020 60000000 3c4c01eb 384239e0 f821ffd1 39430010 38a0fff6 e92d1100 f9210028 39200000 <e9030010> f9010020 60420000 e9210020 ---[ end trace 5f8033b08fd27706 ]---
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/61772b0908c640d0309c40f7d41d062ca4e979fa
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/960dfaf3b578dd23af012590e809ae2d58ba1827
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e08cb9056fb2564d1f6bad789bdf79ab09bf2f81
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/61772b0908c640d0309c40f7d41d062ca4e979fa
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/960dfaf3b578dd23af012590e809ae2d58ba1827
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e08cb9056fb2564d1f6bad789bdf79ab09bf2f81
Impacted products
Vendor Product Version


To clipboard 

{
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "In the Linux kernel, the following vulnerability has been resolved:\n\nibmvnic: don't release napi in __ibmvnic_open()\n\nIf __ibmvnic_open() encounters an error such as when setting link state,\nit calls release_resources() which frees the napi structures needlessly.\nInstead, have __ibmvnic_open() only clean up the work it did so far (i.e.\ndisable napi and irqs) and leave the rest to the callers.\n\nIf caller of __ibmvnic_open() is ibmvnic_open(), it should release the\nresources immediately. If the caller is do_reset() or do_hard_reset(),\nthey will release the resources on the next reset.\n\nThis fixes following crash that occurred when running the drmgr command\nseveral times to add/remove a vnic interface:\n\n\t[102056] ibmvnic 30000003 env3: Disabling rx_scrq[6] irq\n\t[102056] ibmvnic 30000003 env3: Disabling rx_scrq[7] irq\n\t[102056] ibmvnic 30000003 env3: Replenished 8 pools\n\tKernel attempted to read user page (10) - exploit attempt? (uid: 0)\n\tBUG: Kernel NULL pointer dereference on read at 0x00000010\n\tFaulting instruction address: 0xc000000000a3c840\n\tOops: Kernel access of bad area, sig: 11 [#1]\n\tLE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries\n\t...\n\tCPU: 9 PID: 102056 Comm: kworker/9:2 Kdump: loaded Not tainted 5.16.0-rc5-autotest-g6441998e2e37 #1\n\tWorkqueue: events_long __ibmvnic_reset [ibmvnic]\n\tNIP:  c000000000a3c840 LR: c0080000029b5378 CTR: c000000000a3c820\n\tREGS: c0000000548e37e0 TRAP: 0300   Not tainted  (5.16.0-rc5-autotest-g6441998e2e37)\n\tMSR:  8000000000009033 <SF,EE,ME,IR,DR,RI,LE>  CR: 28248484  XER: 00000004\n\tCFAR: c0080000029bdd24 DAR: 0000000000000010 DSISR: 40000000 IRQMASK: 0\n\tGPR00: c0080000029b55d0 c0000000548e3a80 c0000000028f0200 0000000000000000\n\t...\n\tNIP [c000000000a3c840] napi_enable+0x20/0xc0\n\tLR [c0080000029b5378] __ibmvnic_open+0xf0/0x430 [ibmvnic]\n\tCall Trace:\n\t[c0000000548e3a80] [0000000000000006] 0x6 (unreliable)\n\t[c0000000548e3ab0] [c0080000029b55d0] __ibmvnic_open+0x348/0x430 [ibmvnic]\n\t[c0000000548e3b40] [c0080000029bcc28] __ibmvnic_reset+0x500/0xdf0 [ibmvnic]\n\t[c0000000548e3c60] [c000000000176228] process_one_work+0x288/0x570\n\t[c0000000548e3d00] [c000000000176588] worker_thread+0x78/0x660\n\t[c0000000548e3da0] [c0000000001822f0] kthread+0x1c0/0x1d0\n\t[c0000000548e3e10] [c00000000000cf64] ret_from_kernel_thread+0x5c/0x64\n\tInstruction dump:\n\t7d2948f8 792307e0 4e800020 60000000 3c4c01eb 384239e0 f821ffd1 39430010\n\t38a0fff6 e92d1100 f9210028 39200000 <e9030010> f9010020 60420000 e9210020\n\t---[ end trace 5f8033b08fd27706 ]---",
      },
      {
         lang: "es",
         value: "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ibmvnic: no liberar napi en __ibmvnic_open() Si __ibmvnic_open() encuentra un error como al configurar el estado del enlace, llama a release_resources() que libera las estructuras de napi innecesariamente. En su lugar, haga que __ibmvnic_open() solo limpie el trabajo que hizo hasta ahora (es decir, deshabilite napi e irqs) y deje el resto a las personas que llaman. Si el llamador de __ibmvnic_open() es ibmvnic_open(), debería liberar los recursos inmediatamente. Si la persona que llama es do_reset() o do_hard_reset(), liberará los recursos en el próximo reinicio. Esto corrige el siguiente fallo que se produjo al ejecutar el comando drmgr varias veces para agregar/eliminar una interfaz vnic: [102056] ibmvnic 30000003 env3: deshabilitar rx_scrq[6] irq [102056] ibmvnic 30000003 env3: deshabilitar rx_scrq[7] irq [102056] ibmvnic 30000003 env3: Se reabastecieron 8 grupos. El kernel intentó leer la página del usuario (10): ¿intento de explotación? (uid: 0) ERROR: Desreferencia del puntero NULL del kernel al leer en 0x00000010 Dirección de instrucción errónea: 0xc000000000a3c840 Ups: Acceso al kernel del área defectuosa, firma: 11 [#1] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=2048 NUMA pSeries .. CPU: 9 PID: 102056 Comm: kworker/9:2 Kdump: cargado No contaminado 5.16.0-rc5-autotest-g6441998e2e37 #1 Cola de trabajo: events_long __ibmvnic_reset [ibmvnic] NIP: c000000000a3c840 LR: c0080000029b537. 8 CTR: c000000000a3c820 REGS: c0000000548e37e0 TRAMPA : 0300 No contaminado (5.16.0-rc5-autotest-g6441998e2e37) MSR: 8000000000009033  CR: 28248484 XER: 00000004 CFAR: c0080000029bdd24 DAR: 00000000010 DSISR: 40000000 IRQMASK: 0 GPR00: c0080000029b55d0 c0000000548e3a80 c0000000028f0200 0000000000000000 ... NIP [c000000000a3c840] napi_enable+0x20/0xc0 LR [c0080000029b 5378] __ibmvnic_open+0xf0/0x430 [ibmvnic] Seguimiento de llamadas: [c0000000548e3a80] [0000000000000006] 0x6 (no confiable) [c0000000548e3ab0] [c0080000029b55d0] __ibmvnic_open+0x348/0x430 [ibmvnic] [c0000000548e3b40] [c0080000029bcc28] __ibmvnic_reset+0x500/0xdf0 [ibmvnic] [c0000000548e3c60] [c000000000176228 ] proceso_one_work+0x288/0x570 [c0000000548e3d00] [c000000000176588] hilo_trabajador+0x78/0x660 [c0000000548e3da0] [c0000000001822f0] kthread+0x1c0/0x1d0 [c0000000548e3e10] [c00000000000cf64] ret_from_kernel_thread+0x5c/0x64 Volcado de instrucciones: 7d2948f8 792307e0 4e800020 60000000 3c4c01eb 9e0 f821ffd1 39430010 38a0fff6 e92d1100 f9210028 39200000  f9010020 60420000 e9210020 ---[ final de seguimiento 5f8033b08fd27706 ]---",
      },
   ],
   id: "CVE-2022-48811",
   lastModified: "2024-11-21T07:34:08.027",
   metrics: {},
   published: "2024-07-16T12:15:05.367",
   references: [
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/61772b0908c640d0309c40f7d41d062ca4e979fa",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/960dfaf3b578dd23af012590e809ae2d58ba1827",
      },
      {
         source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
         url: "https://git.kernel.org/stable/c/e08cb9056fb2564d1f6bad789bdf79ab09bf2f81",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.kernel.org/stable/c/61772b0908c640d0309c40f7d41d062ca4e979fa",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.kernel.org/stable/c/960dfaf3b578dd23af012590e809ae2d58ba1827",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.kernel.org/stable/c/e08cb9056fb2564d1f6bad789bdf79ab09bf2f81",
      },
   ],
   sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
   vulnStatus: "Awaiting Analysis",
}


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