CVE-2022-48795 (GCVE-0-2022-48795)

Vulnerability from cvelistv5 – Published: 2024-07-16 11:43 – Updated: 2026-05-11 18:47
VLAI
Title
parisc: Fix data TLB miss in sba_unmap_sg
Summary
In the Linux kernel, the following vulnerability has been resolved: parisc: Fix data TLB miss in sba_unmap_sg Rolf Eike Beer reported the following bug: [1274934.746891] Bad Address (null pointer deref?): Code=15 (Data TLB miss fault) at addr 0000004140000018 [1274934.746891] CPU: 3 PID: 5549 Comm: cmake Not tainted 5.15.4-gentoo-parisc64 #4 [1274934.746891] Hardware name: 9000/785/C8000 [1274934.746891] [1274934.746891] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI [1274934.746891] PSW: 00001000000001001111111000001110 Not tainted [1274934.746891] r00-03 000000ff0804fe0e 0000000040bc9bc0 00000000406760e4 0000004140000000 [1274934.746891] r04-07 0000000040b693c0 0000004140000000 000000004a2b08b0 0000000000000001 [1274934.746891] r08-11 0000000041f98810 0000000000000000 000000004a0a7000 0000000000000001 [1274934.746891] r12-15 0000000040bddbc0 0000000040c0cbc0 0000000040bddbc0 0000000040bddbc0 [1274934.746891] r16-19 0000000040bde3c0 0000000040bddbc0 0000000040bde3c0 0000000000000007 [1274934.746891] r20-23 0000000000000006 000000004a368950 0000000000000000 0000000000000001 [1274934.746891] r24-27 0000000000001fff 000000000800000e 000000004a1710f0 0000000040b693c0 [1274934.746891] r28-31 0000000000000001 0000000041f988b0 0000000041f98840 000000004a171118 [1274934.746891] sr00-03 00000000066e5800 0000000000000000 0000000000000000 00000000066e5800 [1274934.746891] sr04-07 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [1274934.746891] [1274934.746891] IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000406760e8 00000000406760ec [1274934.746891] IIR: 48780030 ISR: 0000000000000000 IOR: 0000004140000018 [1274934.746891] CPU: 3 CR30: 00000040e3a9c000 CR31: ffffffffffffffff [1274934.746891] ORIG_R28: 0000000040acdd58 [1274934.746891] IAOQ[0]: sba_unmap_sg+0xb0/0x118 [1274934.746891] IAOQ[1]: sba_unmap_sg+0xb4/0x118 [1274934.746891] RP(r2): sba_unmap_sg+0xac/0x118 [1274934.746891] Backtrace: [1274934.746891] [<00000000402740cc>] dma_unmap_sg_attrs+0x6c/0x70 [1274934.746891] [<000000004074d6bc>] scsi_dma_unmap+0x54/0x60 [1274934.746891] [<00000000407a3488>] mptscsih_io_done+0x150/0xd70 [1274934.746891] [<0000000040798600>] mpt_interrupt+0x168/0xa68 [1274934.746891] [<0000000040255a48>] __handle_irq_event_percpu+0xc8/0x278 [1274934.746891] [<0000000040255c34>] handle_irq_event_percpu+0x3c/0xd8 [1274934.746891] [<000000004025ecb4>] handle_percpu_irq+0xb4/0xf0 [1274934.746891] [<00000000402548e0>] generic_handle_irq+0x50/0x70 [1274934.746891] [<000000004019a254>] call_on_stack+0x18/0x24 [1274934.746891] [1274934.746891] Kernel panic - not syncing: Bad Address (null pointer deref?) The bug is caused by overrunning the sglist and incorrectly testing sg_dma_len(sglist) before nents. Normally this doesn't cause a crash, but in this case sglist crossed a page boundary. This occurs in the following code: while (sg_dma_len(sglist) && nents--) { The fix is simply to test nents first and move the decrement of nents into the loop.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f23f0444ead4d941165aa82ce2fcbb997dc00e97 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < de75676ee99bf9f25b1124ff301b3f7b8ba597d4 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 867e50231c7605547d9334904d70a181f39f2d9e (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < efccc9b0c7e28d0eb7918a236e59f60dc23db4c3 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f8f519d7df66c334b5e08f896ac70ee3b53add3b (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8c8e949ae81e7f5ab58f9f9f8e9b573b93173dd2 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e40ae3133ed87d6d526f3c8fc6a5f9a2d72dcdbf (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b7d6f44a0fa716a82969725516dc0b16bc7cd514 (git)
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Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 4.9.303 , ≤ 4.9.* (semver)
Unaffected: 4.14.268 , ≤ 4.14.* (semver)
Unaffected: 4.19.231 , ≤ 4.19.* (semver)
Unaffected: 5.4.181 , ≤ 5.4.* (semver)
Unaffected: 5.10.102 , ≤ 5.10.* (semver)
Unaffected: 5.15.25 , ≤ 5.15.* (semver)
Unaffected: 5.16.11 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nparisc: Fix data TLB miss in sba_unmap_sg\n\nRolf Eike Beer reported the following bug:\n\n[1274934.746891] Bad Address (null pointer deref?): Code=15 (Data TLB miss fault) at addr 0000004140000018\n[1274934.746891] CPU: 3 PID: 5549 Comm: cmake Not tainted 5.15.4-gentoo-parisc64 #4\n[1274934.746891] Hardware name: 9000/785/C8000\n[1274934.746891]\n[1274934.746891]      YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI\n[1274934.746891] PSW: 00001000000001001111111000001110 Not tainted\n[1274934.746891] r00-03  000000ff0804fe0e 0000000040bc9bc0 00000000406760e4 0000004140000000\n[1274934.746891] r04-07  0000000040b693c0 0000004140000000 000000004a2b08b0 0000000000000001\n[1274934.746891] r08-11  0000000041f98810 0000000000000000 000000004a0a7000 0000000000000001\n[1274934.746891] r12-15  0000000040bddbc0 0000000040c0cbc0 0000000040bddbc0 0000000040bddbc0\n[1274934.746891] r16-19  0000000040bde3c0 0000000040bddbc0 0000000040bde3c0 0000000000000007\n[1274934.746891] r20-23  0000000000000006 000000004a368950 0000000000000000 0000000000000001\n[1274934.746891] r24-27  0000000000001fff 000000000800000e 000000004a1710f0 0000000040b693c0\n[1274934.746891] r28-31  0000000000000001 0000000041f988b0 0000000041f98840 000000004a171118\n[1274934.746891] sr00-03  00000000066e5800 0000000000000000 0000000000000000 00000000066e5800\n[1274934.746891] sr04-07  0000000000000000 0000000000000000 0000000000000000 0000000000000000\n[1274934.746891]\n[1274934.746891] IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000406760e8 00000000406760ec\n[1274934.746891]  IIR: 48780030    ISR: 0000000000000000  IOR: 0000004140000018\n[1274934.746891]  CPU:        3   CR30: 00000040e3a9c000 CR31: ffffffffffffffff\n[1274934.746891]  ORIG_R28: 0000000040acdd58\n[1274934.746891]  IAOQ[0]: sba_unmap_sg+0xb0/0x118\n[1274934.746891]  IAOQ[1]: sba_unmap_sg+0xb4/0x118\n[1274934.746891]  RP(r2): sba_unmap_sg+0xac/0x118\n[1274934.746891] Backtrace:\n[1274934.746891]  [\u003c00000000402740cc\u003e] dma_unmap_sg_attrs+0x6c/0x70\n[1274934.746891]  [\u003c000000004074d6bc\u003e] scsi_dma_unmap+0x54/0x60\n[1274934.746891]  [\u003c00000000407a3488\u003e] mptscsih_io_done+0x150/0xd70\n[1274934.746891]  [\u003c0000000040798600\u003e] mpt_interrupt+0x168/0xa68\n[1274934.746891]  [\u003c0000000040255a48\u003e] __handle_irq_event_percpu+0xc8/0x278\n[1274934.746891]  [\u003c0000000040255c34\u003e] handle_irq_event_percpu+0x3c/0xd8\n[1274934.746891]  [\u003c000000004025ecb4\u003e] handle_percpu_irq+0xb4/0xf0\n[1274934.746891]  [\u003c00000000402548e0\u003e] generic_handle_irq+0x50/0x70\n[1274934.746891]  [\u003c000000004019a254\u003e] call_on_stack+0x18/0x24\n[1274934.746891]\n[1274934.746891] Kernel panic - not syncing: Bad Address (null pointer deref?)\n\nThe bug is caused by overrunning the sglist and incorrectly testing\nsg_dma_len(sglist) before nents. Normally this doesn\u0027t cause a crash,\nbut in this case sglist crossed a page boundary. This occurs in the\nfollowing code:\n\n\twhile (sg_dma_len(sglist) \u0026\u0026 nents--) {\n\nThe fix is simply to test nents first and move the decrement of nents\ninto the loop."
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    },
    "fkie_nvd": {
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nparisc: Fix data TLB miss in sba_unmap_sg\\n\\nRolf Eike Beer reported the following bug:\\n\\n[1274934.746891] Bad Address (null pointer deref?): Code=15 (Data TLB miss fault) at addr 0000004140000018\\n[1274934.746891] CPU: 3 PID: 5549 Comm: cmake Not tainted 5.15.4-gentoo-parisc64 #4\\n[1274934.746891] Hardware name: 9000/785/C8000\\n[1274934.746891]\\n[1274934.746891]      YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI\\n[1274934.746891] PSW: 00001000000001001111111000001110 Not tainted\\n[1274934.746891] r00-03  000000ff0804fe0e 0000000040bc9bc0 00000000406760e4 0000004140000000\\n[1274934.746891] r04-07  0000000040b693c0 0000004140000000 000000004a2b08b0 0000000000000001\\n[1274934.746891] r08-11  0000000041f98810 0000000000000000 000000004a0a7000 0000000000000001\\n[1274934.746891] r12-15  0000000040bddbc0 0000000040c0cbc0 0000000040bddbc0 0000000040bddbc0\\n[1274934.746891] r16-19  0000000040bde3c0 0000000040bddbc0 0000000040bde3c0 0000000000000007\\n[1274934.746891] r20-23  0000000000000006 000000004a368950 0000000000000000 0000000000000001\\n[1274934.746891] r24-27  0000000000001fff 000000000800000e 000000004a1710f0 0000000040b693c0\\n[1274934.746891] r28-31  0000000000000001 0000000041f988b0 0000000041f98840 000000004a171118\\n[1274934.746891] sr00-03  00000000066e5800 0000000000000000 0000000000000000 00000000066e5800\\n[1274934.746891] sr04-07  0000000000000000 0000000000000000 0000000000000000 0000000000000000\\n[1274934.746891]\\n[1274934.746891] IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000406760e8 00000000406760ec\\n[1274934.746891]  IIR: 48780030    ISR: 0000000000000000  IOR: 0000004140000018\\n[1274934.746891]  CPU:        3   CR30: 00000040e3a9c000 CR31: ffffffffffffffff\\n[1274934.746891]  ORIG_R28: 0000000040acdd58\\n[1274934.746891]  IAOQ[0]: sba_unmap_sg+0xb0/0x118\\n[1274934.746891]  IAOQ[1]: sba_unmap_sg+0xb4/0x118\\n[1274934.746891]  RP(r2): sba_unmap_sg+0xac/0x118\\n[1274934.746891] Backtrace:\\n[1274934.746891]  [\u003c00000000402740cc\u003e] dma_unmap_sg_attrs+0x6c/0x70\\n[1274934.746891]  [\u003c000000004074d6bc\u003e] scsi_dma_unmap+0x54/0x60\\n[1274934.746891]  [\u003c00000000407a3488\u003e] mptscsih_io_done+0x150/0xd70\\n[1274934.746891]  [\u003c0000000040798600\u003e] mpt_interrupt+0x168/0xa68\\n[1274934.746891]  [\u003c0000000040255a48\u003e] __handle_irq_event_percpu+0xc8/0x278\\n[1274934.746891]  [\u003c0000000040255c34\u003e] handle_irq_event_percpu+0x3c/0xd8\\n[1274934.746891]  [\u003c000000004025ecb4\u003e] handle_percpu_irq+0xb4/0xf0\\n[1274934.746891]  [\u003c00000000402548e0\u003e] generic_handle_irq+0x50/0x70\\n[1274934.746891]  [\u003c000000004019a254\u003e] call_on_stack+0x18/0x24\\n[1274934.746891]\\n[1274934.746891] Kernel panic - not syncing: Bad Address (null pointer deref?)\\n\\nThe bug is caused by overrunning the sglist and incorrectly testing\\nsg_dma_len(sglist) before nents. Normally this doesn\u0027t cause a crash,\\nbut in this case sglist crossed a page boundary. This occurs in the\\nfollowing code:\\n\\n\\twhile (sg_dma_len(sglist) \u0026\u0026 nents--) {\\n\\nThe fix is simply to test nents first and move the decrement of nents\\ninto the loop.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se resolvi\\u00f3 la siguiente vulnerabilidad: parisc: corregir la falta de TLB de datos en sba_unmap_sg Rolf Eike Beer inform\\u00f3 el siguiente error: [1274934.746891] Direcci\\u00f3n incorrecta (\\u00bfpuntero nulo deref?): C\\u00f3digo = 15 (falla de falta de TLB de datos) en direcci\\u00f3n 0000004140000018 [1274934.746891] CPU: 3 PID: 5549 Comunicaciones: cmake No contaminado 5.15.4-gentoo-parisc64 #4 [1274934.746891] Nombre de hardware: 9000/785/C8000 [1274934.746891 ] [1274934.746891] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI [1274934.746891] PSW: 000010000000010011111111000001110 No contaminado [1274934.746891] r00-03 000000ff0804fe0e 0000000040bc9bc0 00000000406760e4 0000004140000000 [1274934.746891] r04-07 0b693c0 0000004140000000 000000004a2b08b0 0000000000000001 [1274934.746891] r08-11 0000000041f98810 0000000000000000 00000000 4a0a7000 0000000000000001 [1274934.746891] r12-15 0000000040bddbc0 0000000040c0cbc0 0000000040bddbc0 0000000040bddbc0 [1274934.746891 ] r16-19 0000000040bde3c0 0000000040bddbc0 0000000040bde3c0 0000000000000007 [1274934.746891] r20-23 0000000000000006 000000004a368950 0000000000000000 0000000000000001 [1274934.746891 ] r24-27 0000000000001fff 000000000800000e 000000004a1710f0 0000000040b693c0 [1274934.746891] r28-31 0000000000000001 00000000 41f988b0 0000000041f98840 000000004a171118 [1274934.746891] sr00-03 00000000066e5800 0000000000000000 0000000000000000 000000 00066e5800 [1274934.746891] sr04-07 0000000000000000 0000000000000000 00000000000000000 0000000000000000 [1274934.746891] [1274934.746891] IASQ: 0000000000000000 00000000000000000 IAOQ: 00000000406760e8 00000000406760 ec [1274934.746891] IIR: 48780030 ISR: 0000000000000000 IOR: 0000004140000018 [1274934.746891] CPU: 3 CR30: 00000040e3a9c000 CR31: 1274934.746891] ORIG_R28: 0000000040acdd58 [1274934.746891] IAOQ[ 0]: sba_unmap_sg+0xb0/0x118 [1274934.746891] IAOQ[1]: sba_unmap_sg+0xb4/0x118 [1274934.746891] RP(r2): sba_unmap_sg+0xac/0x118 [1274934.746891] seguimiento: [1274934.746891] [\u0026lt;00000000402740cc\u0026gt;] dma_unmap_sg_attrs+0x6c /0x70 [1274934.746891] [\u0026lt;000000004074d6bc\u0026gt;] scsi_dma_unmap+0x54/0x60 [1274934.746891] [\u0026lt;00000000407a3488\u0026gt;] mptscsih_io_done+0x150/0xd70 4.746891] [\u0026lt;0000000040798600\u0026gt;] mpt_interrupt+0x168/0xa68 [1274934.746891] [\u0026lt;0000000040255a48\u0026gt;] __handle_irq_event_percpu +0xc8/0x278 [1274934.746891] [\u0026lt;0000000040255c34\u0026gt;] handle_irq_event_percpu+0x3c/0xd8 [1274934.746891] [\u0026lt;000000004025ecb4\u0026gt;] handle_percpu_irq+0xb4/0xf0 [1 274934.746891] [\u0026lt;00000000402548e0\u0026gt;] generic_handle_irq+0x50/0x70 [1274934.746891] [\u0026lt;000000004019a254\u0026gt; ] call_on_stack+0x18/0x24 [1274934.746891] [1274934.746891] P\\u00e1nico del kernel - no se sincroniza: Direcci\\u00f3n incorrecta (\\u00bfpuntero nulo deref?) El error se debe a que se sobrepasa sglist y se prueba incorrectamente sg_dma_len(sglist) antes de nents. Normalmente esto no causa un bloqueo, pero en este caso sglist cruz\\u00f3 el l\\u00edmite de una p\\u00e1gina. Esto ocurre en el siguiente c\\u00f3digo: while (sg_dma_len(sglist) \u0026amp;\u0026amp; nents--) { La soluci\\u00f3n es simplemente probar nents primero y mover la disminuci\\u00f3n de nents al bucle.\"}]",
      "id": "CVE-2022-48795",
      "lastModified": "2024-11-21T07:34:02.450",
      "published": "2024-07-16T12:15:04.220",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/867e50231c7605547d9334904d70a181f39f2d9e\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/8c8e949ae81e7f5ab58f9f9f8e9b573b93173dd2\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/b7d6f44a0fa716a82969725516dc0b16bc7cd514\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/de75676ee99bf9f25b1124ff301b3f7b8ba597d4\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/e40ae3133ed87d6d526f3c8fc6a5f9a2d72dcdbf\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/efccc9b0c7e28d0eb7918a236e59f60dc23db4c3\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/f23f0444ead4d941165aa82ce2fcbb997dc00e97\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/f8f519d7df66c334b5e08f896ac70ee3b53add3b\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/867e50231c7605547d9334904d70a181f39f2d9e\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/8c8e949ae81e7f5ab58f9f9f8e9b573b93173dd2\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/b7d6f44a0fa716a82969725516dc0b16bc7cd514\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/de75676ee99bf9f25b1124ff301b3f7b8ba597d4\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/e40ae3133ed87d6d526f3c8fc6a5f9a2d72dcdbf\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/efccc9b0c7e28d0eb7918a236e59f60dc23db4c3\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/f23f0444ead4d941165aa82ce2fcbb997dc00e97\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/f8f519d7df66c334b5e08f896ac70ee3b53add3b\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-48795\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-16T12:15:04.220\",\"lastModified\":\"2026-06-17T05:16:12.833\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nparisc: Fix data TLB miss in sba_unmap_sg\\n\\nRolf Eike Beer reported the following bug:\\n\\n[1274934.746891] Bad Address (null pointer deref?): Code=15 (Data TLB miss fault) at addr 0000004140000018\\n[1274934.746891] CPU: 3 PID: 5549 Comm: cmake Not tainted 5.15.4-gentoo-parisc64 #4\\n[1274934.746891] Hardware name: 9000/785/C8000\\n[1274934.746891]\\n[1274934.746891]      YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI\\n[1274934.746891] PSW: 00001000000001001111111000001110 Not tainted\\n[1274934.746891] r00-03  000000ff0804fe0e 0000000040bc9bc0 00000000406760e4 0000004140000000\\n[1274934.746891] r04-07  0000000040b693c0 0000004140000000 000000004a2b08b0 0000000000000001\\n[1274934.746891] r08-11  0000000041f98810 0000000000000000 000000004a0a7000 0000000000000001\\n[1274934.746891] r12-15  0000000040bddbc0 0000000040c0cbc0 0000000040bddbc0 0000000040bddbc0\\n[1274934.746891] r16-19  0000000040bde3c0 0000000040bddbc0 0000000040bde3c0 0000000000000007\\n[1274934.746891] r20-23  0000000000000006 000000004a368950 0000000000000000 0000000000000001\\n[1274934.746891] r24-27  0000000000001fff 000000000800000e 000000004a1710f0 0000000040b693c0\\n[1274934.746891] r28-31  0000000000000001 0000000041f988b0 0000000041f98840 000000004a171118\\n[1274934.746891] sr00-03  00000000066e5800 0000000000000000 0000000000000000 00000000066e5800\\n[1274934.746891] sr04-07  0000000000000000 0000000000000000 0000000000000000 0000000000000000\\n[1274934.746891]\\n[1274934.746891] IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000406760e8 00000000406760ec\\n[1274934.746891]  IIR: 48780030    ISR: 0000000000000000  IOR: 0000004140000018\\n[1274934.746891]  CPU:        3   CR30: 00000040e3a9c000 CR31: ffffffffffffffff\\n[1274934.746891]  ORIG_R28: 0000000040acdd58\\n[1274934.746891]  IAOQ[0]: sba_unmap_sg+0xb0/0x118\\n[1274934.746891]  IAOQ[1]: sba_unmap_sg+0xb4/0x118\\n[1274934.746891]  RP(r2): sba_unmap_sg+0xac/0x118\\n[1274934.746891] Backtrace:\\n[1274934.746891]  [\u003c00000000402740cc\u003e] dma_unmap_sg_attrs+0x6c/0x70\\n[1274934.746891]  [\u003c000000004074d6bc\u003e] scsi_dma_unmap+0x54/0x60\\n[1274934.746891]  [\u003c00000000407a3488\u003e] mptscsih_io_done+0x150/0xd70\\n[1274934.746891]  [\u003c0000000040798600\u003e] mpt_interrupt+0x168/0xa68\\n[1274934.746891]  [\u003c0000000040255a48\u003e] __handle_irq_event_percpu+0xc8/0x278\\n[1274934.746891]  [\u003c0000000040255c34\u003e] handle_irq_event_percpu+0x3c/0xd8\\n[1274934.746891]  [\u003c000000004025ecb4\u003e] handle_percpu_irq+0xb4/0xf0\\n[1274934.746891]  [\u003c00000000402548e0\u003e] generic_handle_irq+0x50/0x70\\n[1274934.746891]  [\u003c000000004019a254\u003e] call_on_stack+0x18/0x24\\n[1274934.746891]\\n[1274934.746891] Kernel panic - not syncing: Bad Address (null pointer deref?)\\n\\nThe bug is caused by overrunning the sglist and incorrectly testing\\nsg_dma_len(sglist) before nents. Normally this doesn\u0027t cause a crash,\\nbut in this case sglist crossed a page boundary. This occurs in the\\nfollowing code:\\n\\n\\twhile (sg_dma_len(sglist) \u0026\u0026 nents--) {\\n\\nThe fix is simply to test nents first and move the decrement of nents\\ninto the loop.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: parisc: corregir la falta de TLB de datos en sba_unmap_sg Rolf Eike Beer inform\u00f3 el siguiente error: [1274934.746891] Direcci\u00f3n incorrecta (\u00bfpuntero nulo deref?): C\u00f3digo = 15 (falla de falta de TLB de datos) en direcci\u00f3n 0000004140000018 [1274934.746891] CPU: 3 PID: 5549 Comunicaciones: cmake No contaminado 5.15.4-gentoo-parisc64 #4 [1274934.746891] Nombre de hardware: 9000/785/C8000 [1274934.746891 ] [1274934.746891] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI [1274934.746891] PSW: 000010000000010011111111000001110 No contaminado [1274934.746891] r00-03 000000ff0804fe0e 0000000040bc9bc0 00000000406760e4 0000004140000000 [1274934.746891] r04-07 0b693c0 0000004140000000 000000004a2b08b0 0000000000000001 [1274934.746891] r08-11 0000000041f98810 0000000000000000 00000000 4a0a7000 0000000000000001 [1274934.746891] r12-15 0000000040bddbc0 0000000040c0cbc0 0000000040bddbc0 0000000040bddbc0 [1274934.746891 ] r16-19 0000000040bde3c0 0000000040bddbc0 0000000040bde3c0 0000000000000007 [1274934.746891] r20-23 0000000000000006 000000004a368950 0000000000000000 0000000000000001 [1274934.746891 ] r24-27 0000000000001fff 000000000800000e 000000004a1710f0 0000000040b693c0 [1274934.746891] r28-31 0000000000000001 00000000 41f988b0 0000000041f98840 000000004a171118 [1274934.746891] sr00-03 00000000066e5800 0000000000000000 0000000000000000 000000 00066e5800 [1274934.746891] sr04-07 0000000000000000 0000000000000000 00000000000000000 0000000000000000 [1274934.746891] [1274934.746891] IASQ: 0000000000000000 00000000000000000 IAOQ: 00000000406760e8 00000000406760 ec [1274934.746891] IIR: 48780030 ISR: 0000000000000000 IOR: 0000004140000018 [1274934.746891] CPU: 3 CR30: 00000040e3a9c000 CR31: 1274934.746891] ORIG_R28: 0000000040acdd58 [1274934.746891] IAOQ[ 0]: sba_unmap_sg+0xb0/0x118 [1274934.746891] IAOQ[1]: sba_unmap_sg+0xb4/0x118 [1274934.746891] RP(r2): sba_unmap_sg+0xac/0x118 [1274934.746891] seguimiento: [1274934.746891] [\u0026lt;00000000402740cc\u0026gt;] dma_unmap_sg_attrs+0x6c /0x70 [1274934.746891] [\u0026lt;000000004074d6bc\u0026gt;] scsi_dma_unmap+0x54/0x60 [1274934.746891] [\u0026lt;00000000407a3488\u0026gt;] mptscsih_io_done+0x150/0xd70 4.746891] [\u0026lt;0000000040798600\u0026gt;] mpt_interrupt+0x168/0xa68 [1274934.746891] [\u0026lt;0000000040255a48\u0026gt;] __handle_irq_event_percpu +0xc8/0x278 [1274934.746891] [\u0026lt;0000000040255c34\u0026gt;] handle_irq_event_percpu+0x3c/0xd8 [1274934.746891] [\u0026lt;000000004025ecb4\u0026gt;] handle_percpu_irq+0xb4/0xf0 [1 274934.746891] [\u0026lt;00000000402548e0\u0026gt;] generic_handle_irq+0x50/0x70 [1274934.746891] [\u0026lt;000000004019a254\u0026gt; ] call_on_stack+0x18/0x24 [1274934.746891] [1274934.746891] P\u00e1nico del kernel - no se sincroniza: Direcci\u00f3n incorrecta (\u00bfpuntero nulo deref?) El error se debe a que se sobrepasa sglist y se prueba incorrectamente sg_dma_len(sglist) antes de nents. Normalmente esto no causa un bloqueo, pero en este caso sglist cruz\u00f3 el l\u00edmite de una p\u00e1gina. Esto ocurre en el siguiente c\u00f3digo: while (sg_dma_len(sglist) \u0026amp;\u0026amp; nents--) { La soluci\u00f3n es simplemente probar nents primero y mover la disminuci\u00f3n de nents al 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    "redhat_vex": {
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      "current_release_date": "2025-11-21T10:45:50+00:00",
      "cve": "CVE-2022-48795",
      "id": "CVE-2022-48795",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: parisc: Fix data TLB miss in sba_unmap_sg",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-48795.json",
      "version": "3"
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      "id": "CVE-2022-48795",
      "initial_release_date": "2024-07-18T03:06:29Z",
      "product_status:known_not_affected": "271",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-48795",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-48795.json",
      "version": "15"
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#4\\n[1274934.746891] Hardware name: 9000/785/C8000\\n[1274934.746891]\\n[1274934.746891]      YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI\\n[1274934.746891] PSW: 00001000000001001111111000001110 Not tainted\\n[1274934.746891] r00-03  000000ff0804fe0e 0000000040bc9bc0 00000000406760e4 0000004140000000\\n[1274934.746891] r04-07  0000000040b693c0 0000004140000000 000000004a2b08b0 0000000000000001\\n[1274934.746891] r08-11  0000000041f98810 0000000000000000 000000004a0a7000 0000000000000001\\n[1274934.746891] r12-15  0000000040bddbc0 0000000040c0cbc0 0000000040bddbc0 0000000040bddbc0\\n[1274934.746891] r16-19  0000000040bde3c0 0000000040bddbc0 0000000040bde3c0 0000000000000007\\n[1274934.746891] r20-23  0000000000000006 000000004a368950 0000000000000000 0000000000000001\\n[1274934.746891] r24-27  0000000000001fff 000000000800000e 000000004a1710f0 0000000040b693c0\\n[1274934.746891] r28-31  0000000000000001 0000000041f988b0 0000000041f98840 000000004a171118\\n[1274934.746891] sr00-03  00000000066e5800 0000000000000000 0000000000000000 00000000066e5800\\n[1274934.746891] sr04-07  0000000000000000 0000000000000000 0000000000000000 0000000000000000\\n[1274934.746891]\\n[1274934.746891] IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000406760e8 00000000406760ec\\n[1274934.746891]  IIR: 48780030    ISR: 0000000000000000  IOR: 0000004140000018\\n[1274934.746891]  CPU:        3   CR30: 00000040e3a9c000 CR31: ffffffffffffffff\\n[1274934.746891]  ORIG_R28: 0000000040acdd58\\n[1274934.746891]  IAOQ[0]: sba_unmap_sg+0xb0/0x118\\n[1274934.746891]  IAOQ[1]: sba_unmap_sg+0xb4/0x118\\n[1274934.746891]  RP(r2): sba_unmap_sg+0xac/0x118\\n[1274934.746891] Backtrace:\\n[1274934.746891]  [\u003c00000000402740cc\u003e] dma_unmap_sg_attrs+0x6c/0x70\\n[1274934.746891]  [\u003c000000004074d6bc\u003e] scsi_dma_unmap+0x54/0x60\\n[1274934.746891]  [\u003c00000000407a3488\u003e] mptscsih_io_done+0x150/0xd70\\n[1274934.746891]  [\u003c0000000040798600\u003e] mpt_interrupt+0x168/0xa68\\n[1274934.746891]  [\u003c0000000040255a48\u003e] __handle_irq_event_percpu+0xc8/0x278\\n[1274934.746891]  [\u003c0000000040255c34\u003e] handle_irq_event_percpu+0x3c/0xd8\\n[1274934.746891]  [\u003c000000004025ecb4\u003e] handle_percpu_irq+0xb4/0xf0\\n[1274934.746891]  [\u003c00000000402548e0\u003e] generic_handle_irq+0x50/0x70\\n[1274934.746891]  [\u003c000000004019a254\u003e] call_on_stack+0x18/0x24\\n[1274934.746891]\\n[1274934.746891] Kernel panic - not syncing: Bad Address (null pointer deref?)\\n\\nThe bug is caused by overrunning the sglist and incorrectly testing\\nsg_dma_len(sglist) before nents. Normally this doesn\u0027t cause a crash,\\nbut in this case sglist crossed a page boundary. This occurs in the\\nfollowing code:\\n\\n\\twhile (sg_dma_len(sglist) \u0026\u0026 nents--) {\\n\\nThe fix is simply to test nents first and move the decrement of nents\\ninto the loop.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.303\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.268\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.231\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.181\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.102\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.25\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.11\", \"versionStartIncluding\": \"2.6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17\", \"versionStartIncluding\": \"2.6.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-12-23T13:20:32.995Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-48795\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-12-23T13:20:32.995Z\", \"dateReserved\": \"2024-07-16T11:38:08.895Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-16T11:43:50.129Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.