Vulnerability-Lookup

CVE-2022-48811 (GCVE-0-2022-48811)

Vulnerability from cvelistv5 – Published: 2024-07-16 11:44 – Updated: 2026-05-11 18:47

Title

ibmvnic: don't release napi in __ibmvnic_open()

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 ]---

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 16:58 UTC

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/960dfaf3b578dd23a…
https://git.kernel.org/stable/c/e08cb9056fb2564d1…
https://git.kernel.org/stable/c/61772b0908c640d03…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: ed651a10875f13135a5f59c1bae4d51b377b3925 , < 960dfaf3b578dd23af012590e809ae2d58ba1827 (git) Affected: ed651a10875f13135a5f59c1bae4d51b377b3925 , < e08cb9056fb2564d1f6bad789bdf79ab09bf2f81 (git) Affected: ed651a10875f13135a5f59c1bae4d51b377b3925 , < 61772b0908c640d0309c40f7d41d062ca4e979fa (git)	guessed
Linux	Linux	Affected: 4.12 Unaffected: 0 , < 4.12 (semver) Unaffected: 5.15.27 , ≤ 5.15.* (semver) Unaffected: 5.16.10 , ≤ 5.16.* (semver) Unaffected: 5.17 , ≤ * (original_commit_for_fix)	guessed

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      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nibmvnic: don\u0027t 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 \u003cSF,EE,ME,IR,DR,RI,LE\u003e  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 \u003ce9030010\u003e 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(), deber\\u00eda liberar los recursos inmediatamente. Si la persona que llama es do_reset() o do_hard_reset(), liberar\\u00e1 los recursos en el pr\\u00f3ximo 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 intent\\u00f3 leer la p\\u00e1gina del usuario (10): \\u00bfintento de explotaci\\u00f3n? (uid: 0) ERROR: Desreferencia del puntero NULL del kernel al leer en 0x00000010 Direcci\\u00f3n de instrucci\\u00f3n err\\u00f3nea: 0xc000000000a3c840 Ups: Acceso al kernel del \\u00e1rea 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",
      "published": "2024-07-16T12:15:05.367",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2022-48811\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-16T12:15:05.367\",\"lastModified\":\"2026-06-17T05:16:15.343\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nibmvnic: don\u0027t 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 \u003cSF,EE,ME,IR,DR,RI,LE\u003e  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 \u003ce9030010\u003e 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(), deber\u00eda liberar los recursos inmediatamente. Si la persona que llama es do_reset() o do_hard_reset(), liberar\u00e1 los recursos en el pr\u00f3ximo 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 intent\u00f3 leer la p\u00e1gina del usuario (10): \u00bfintento de explotaci\u00f3n? (uid: 0) ERROR: Desreferencia del puntero NULL del kernel al leer en 0x00000010 Direcci\u00f3n de instrucci\u00f3n err\u00f3nea: 0xc000000000a3c840 Ups: Acceso al kernel del \u00e1rea 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 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    "redhat_vex": {
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      "product_status:known_affected": "184",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ibmvnic: don\u0026#39;t release napi in __ibmvnic_open()",
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      "title": "SUSE CVE CVE-2022-48811",
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      "version": "67"
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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 \u003cSF,EE,ME,IR,DR,RI,LE\u003e  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 \u003ce9030010\u003e f9010020 60420000 e9210020\\n\\t---[ end trace 5f8033b08fd27706 ]---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.27\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.10\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17\", \"versionStartIncluding\": \"4.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T18:47:35.582Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-48811\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T18:47:35.582Z\", \"dateReserved\": \"2024-07-16T11:38:08.898Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-16T11:44:01.224Z\", \"assignerShortName\": \"Linux\"}",
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}

GHSA-RWF6-2RVC-66M9

Vulnerability from github – Published: 2024-07-16 12:30 – Updated: 2025-09-25 21:30

Details

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 ]---

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48811"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-07-16T12:15:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nibmvnic: don\u0027t 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 \u003cSF,EE,ME,IR,DR,RI,LE\u003e  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 \u003ce9030010\u003e f9010020 60420000 e9210020\n\t---[ end trace 5f8033b08fd27706 ]---",
  "id": "GHSA-rwf6-2rvc-66m9",
  "modified": "2025-09-25T21:30:18Z",
  "published": "2024-07-16T12:30:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48811"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61772b0908c640d0309c40f7d41d062ca4e979fa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/960dfaf3b578dd23af012590e809ae2d58ba1827"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e08cb9056fb2564d1f6bad789bdf79ab09bf2f81"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

SUSE-SU-2024:2892-1

Vulnerability from csaf_suse - Published: 2024-08-13 14:05 - Updated: 2024-08-13 14:05

Summary

Security update for the Linux Kernel

Severity

Important

Scope

139 vulnerabilities in this advisory, including CVE-2022-48811.

CVE-2022-48811

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 12 products

Open the full advisory

SUSE-SU-2024:2894-1

Vulnerability from csaf_suse - Published: 2024-08-13 14:07 - Updated: 2024-08-13 14:07

Summary

Security update for the Linux Kernel

Severity

Important

Scope

310 vulnerabilities in this advisory, including CVE-2022-48811.

CVE-2022-48811

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 37 products

Open the full advisory

SUSE-SU-2024:2901-1

Vulnerability from csaf_suse - Published: 2024-08-14 07:24 - Updated: 2024-08-14 07:24

Summary

Security update for the Linux Kernel

Severity

Important

Scope

178 vulnerabilities in this advisory, including CVE-2022-48811.

CVE-2022-48811

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 12 products

Open the full advisory

SUSE-SU-2024:2902-1

Vulnerability from csaf_suse - Published: 2024-08-14 07:25 - Updated: 2024-08-14 07:25

Summary

Security update for the Linux Kernel

Severity

Important

Scope

182 vulnerabilities in this advisory, including CVE-2022-48811.

CVE-2022-48811

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 4 products

Open the full advisory

SUSE-SU-2024:2929-1

Vulnerability from csaf_suse - Published: 2024-08-15 09:31 - Updated: 2024-08-15 09:31

Summary

Security update for the Linux Kernel

Severity

Important

Scope

194 vulnerabilities in this advisory, including CVE-2022-48811.

CVE-2022-48811

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 139 products

Open the full advisory

SUSE-SU-2024:2939-1

Vulnerability from csaf_suse - Published: 2024-08-16 07:05 - Updated: 2024-08-16 07:05

Summary

Security update for the Linux Kernel

Severity

Important

Scope

531 vulnerabilities in this advisory, including CVE-2022-48811.

CVE-2022-48811

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 192 products

Open the full advisory

SUSE-SU-2024:2940-1

Vulnerability from csaf_suse - Published: 2024-08-16 09:14 - Updated: 2024-08-16 09:14

Summary

Security update for the Linux Kernel

Severity

Important

Scope

150 vulnerabilities in this advisory, including CVE-2022-48811.

CVE-2022-48811

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 67 products

Open the full advisory

SUSE-SU-2024:2947-1

Vulnerability from csaf_suse - Published: 2024-08-16 13:46 - Updated: 2024-08-16 13:46

Summary

Security update for the Linux Kernel

Severity

Important

Scope

310 vulnerabilities in this advisory, including CVE-2022-48811.

CVE-2022-48811

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 35 products

Open the full advisory

SUSE-SU-2024:3225-1

Vulnerability from csaf_suse - Published: 2024-09-12 12:12 - Updated: 2024-09-12 12:12

Summary

Security update for the Linux Kernel

Severity

Important

Scope

51 vulnerabilities in this advisory, including CVE-2022-48811.

CVE-2022-48811

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Recommended: 4 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2022-48811 (GCVE-0-2022-48811)

Tags

Sightings

Nomenclature