{
  "cveId": "CVE-2022-48795",
  "url": "https://patchblox.com/security/cve/CVE-2022-48795",
  "summary": "CVE-2022-48795 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48795, released July 16, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  parisc: Fix data TLB miss in sba_unmap_sg  Rolf...",
  "description": "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\u002B0xb0/0x118 [1274934.746891]  IAOQ[1]: sba_unmap_sg\u002B0xb4/0x118 [1274934.746891]  RP(r2): sba_unmap_sg\u002B0xac/0x118 [1274934.746891] Backtrace: [1274934.746891]  [\u003C00000000402740cc\u003E] dma_unmap_sg_attrs\u002B0x6c/0x70 [1274934.746891]  [\u003C000000004074d6bc\u003E] scsi_dma_unmap\u002B0x54/0x60 [1274934.746891]  [\u003C00000000407a3488\u003E] mptscsih_io_done\u002B0x150/0xd70 [1274934.746891]  [\u003C0000000040798600\u003E] mpt_interrupt\u002B0x168/0xa68 [1274934.746891]  [\u003C0000000040255a48\u003E] __handle_irq_event_percpu\u002B0xc8/0x278 [1274934.746891]  [\u003C0000000040255c34\u003E] handle_irq_event_percpu\u002B0x3c/0xd8 [1274934.746891]  [\u003C000000004025ecb4\u003E] handle_percpu_irq\u002B0xb4/0xf0 [1274934.746891]  [\u003C00000000402548e0\u003E] generic_handle_irq\u002B0x50/0x70 [1274934.746891]  [\u003C000000004019a254\u003E] call_on_stack\u002B0x18/0x24 [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\u0027t cause a crash, but in this case sglist crossed a page boundary. This occurs in the following code:  \twhile (sg_dma_len(sglist) \u0026\u0026 nents--) {  The fix is simply to test nents first and move the decrement of nents into the loop.",
  "published": "2024-07-16T12:15:04Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00241,
  "epssPercentile": 0.15378,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "5.16.11-1",
      "fix": "DEBIAN-CVE-2022-48795",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48795",
      "released": "2024-07-16T12:15:04Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "5.16.11-1",
      "fix": "DEBIAN-CVE-2022-48795",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48795",
      "released": "2024-07-16T12:15:04Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "5.16.11-1",
      "fix": "DEBIAN-CVE-2022-48795",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-48795",
      "released": "2024-07-16T12:15:04Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}