CVE-2026-23266 (GCVE-0-2026-23266)

Vulnerability from cvelistv5 – Published: 2026-03-18 17:44 – Updated: 2026-05-11 22:03
VLAI
Title
fbdev: rivafb: fix divide error in nv3_arb()
Summary
In the Linux kernel, the following vulnerability has been resolved: fbdev: rivafb: fix divide error in nv3_arb() A userspace program can trigger the RIVA NV3 arbitration code by calling the FBIOPUT_VSCREENINFO ioctl on /dev/fb*. When doing so, the driver recomputes FIFO arbitration parameters in nv3_arb(), using state->mclk_khz (derived from the PRAMDAC MCLK PLL) as a divisor without validating it first. In a normal setup, state->mclk_khz is provided by the real hardware and is non-zero. However, an attacker can construct a malicious or misconfigured device (e.g. a crafted/emulated PCI device) that exposes a bogus PLL configuration, causing state->mclk_khz to become zero. Once nv3_get_param() calls nv3_arb(), the division by state->mclk_khz in the gns calculation causes a divide error and crashes the kernel. Fix this by checking whether state->mclk_khz is zero and bailing out before doing the division. The following log reveals it: rivafb: setting virtual Y resolution to 2184 divide error: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 PID: 2187 Comm: syz-executor.0 Not tainted 5.18.0-rc1+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:nv3_arb drivers/video/fbdev/riva/riva_hw.c:439 [inline] RIP: 0010:nv3_get_param+0x3ab/0x13b0 drivers/video/fbdev/riva/riva_hw.c:546 Call Trace: nv3CalcArbitration.constprop.0+0x255/0x460 drivers/video/fbdev/riva/riva_hw.c:603 nv3UpdateArbitrationSettings drivers/video/fbdev/riva/riva_hw.c:637 [inline] CalcStateExt+0x447/0x1b90 drivers/video/fbdev/riva/riva_hw.c:1246 riva_load_video_mode+0x8a9/0xea0 drivers/video/fbdev/riva/fbdev.c:779 rivafb_set_par+0xc0/0x5f0 drivers/video/fbdev/riva/fbdev.c:1196 fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1033 do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1109 fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1188 __x64_sys_ioctl+0x122/0x190 fs/ioctl.c:856
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ec5a58f4fd581875593ea92a65485e1906a53c0f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 52916878db2b8e3769743a94484729f0844352df (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 526460a96c5443e2fc0fd231edd1f9c49d2de26b (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 78daf5984d96edec3b920c72a93bd6821b8710b7 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9efa0dc46270a8723c158c64afbcf1dead72b28c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3e4cbd1d46c246dfa684c8e9d8c20ae0b960c50a (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 73f0391e92d404da68f7484e57c106c5e673dc7e (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0209e21e3c372fa2da04c39214bec0b64e4eb5f4 (git)
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Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.10.251 , ≤ 5.10.* (semver)
Unaffected: 5.15.201 , ≤ 5.15.* (semver)
Unaffected: 6.1.164 , ≤ 6.1.* (semver)
Unaffected: 6.6.127 , ≤ 6.6.* (semver)
Unaffected: 6.12.74 , ≤ 6.12.* (semver)
Unaffected: 6.18.13 , ≤ 6.18.* (semver)
Unaffected: 6.19.3 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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              "version": "0",
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              "version": "5.10.251",
              "versionType": "semver"
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.201",
              "versionType": "semver"
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              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.164",
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            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.127",
              "versionType": "semver"
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              "lessThanOrEqual": "6.12.*",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: rivafb: fix divide error in nv3_arb()\n\nA userspace program can trigger the RIVA NV3 arbitration code by calling\nthe FBIOPUT_VSCREENINFO ioctl on /dev/fb*. When doing so, the driver\nrecomputes FIFO arbitration parameters in nv3_arb(), using state-\u003emclk_khz\n(derived from the PRAMDAC MCLK PLL) as a divisor without validating it\nfirst.\n\nIn a normal setup, state-\u003emclk_khz is provided by the real hardware and is\nnon-zero. However, an attacker can construct a malicious or misconfigured\ndevice (e.g. a crafted/emulated PCI device) that exposes a bogus PLL\nconfiguration, causing state-\u003emclk_khz to become zero.  Once\nnv3_get_param() calls nv3_arb(), the division by state-\u003emclk_khz in the gns\ncalculation causes a divide error and crashes the kernel.\n\nFix this by checking whether state-\u003emclk_khz is zero and bailing out before\ndoing the division.\n\nThe following log reveals it:\n\nrivafb: setting virtual Y resolution to 2184\ndivide error: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 0 PID: 2187 Comm: syz-executor.0 Not tainted 5.18.0-rc1+ #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014\nRIP: 0010:nv3_arb drivers/video/fbdev/riva/riva_hw.c:439 [inline]\nRIP: 0010:nv3_get_param+0x3ab/0x13b0 drivers/video/fbdev/riva/riva_hw.c:546\nCall Trace:\n  nv3CalcArbitration.constprop.0+0x255/0x460 drivers/video/fbdev/riva/riva_hw.c:603\n  nv3UpdateArbitrationSettings drivers/video/fbdev/riva/riva_hw.c:637 [inline]\n  CalcStateExt+0x447/0x1b90 drivers/video/fbdev/riva/riva_hw.c:1246\n  riva_load_video_mode+0x8a9/0xea0 drivers/video/fbdev/riva/fbdev.c:779\n  rivafb_set_par+0xc0/0x5f0 drivers/video/fbdev/riva/fbdev.c:1196\n  fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1033\n  do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1109\n  fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1188\n  __x64_sys_ioctl+0x122/0x190 fs/ioctl.c:856"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:03:32.226Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ec5a58f4fd581875593ea92a65485e1906a53c0f"
        },
        {
          "url": "https://git.kernel.org/stable/c/52916878db2b8e3769743a94484729f0844352df"
        },
        {
          "url": "https://git.kernel.org/stable/c/526460a96c5443e2fc0fd231edd1f9c49d2de26b"
        },
        {
          "url": "https://git.kernel.org/stable/c/78daf5984d96edec3b920c72a93bd6821b8710b7"
        },
        {
          "url": "https://git.kernel.org/stable/c/9efa0dc46270a8723c158c64afbcf1dead72b28c"
        },
        {
          "url": "https://git.kernel.org/stable/c/3e4cbd1d46c246dfa684c8e9d8c20ae0b960c50a"
        },
        {
          "url": "https://git.kernel.org/stable/c/73f0391e92d404da68f7484e57c106c5e673dc7e"
        },
        {
          "url": "https://git.kernel.org/stable/c/0209e21e3c372fa2da04c39214bec0b64e4eb5f4"
        }
      ],
      "title": "fbdev: rivafb: fix divide error in nv3_arb()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23266",
    "datePublished": "2026-03-18T17:44:48.715Z",
    "dateReserved": "2026-01-13T15:37:45.991Z",
    "dateUpdated": "2026-05-11T22:03:32.226Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-23266",
      "date": "2026-08-14",
      "epss": "0.00114",
      "percentile": "0.01754"
    },
    "microsoft_vex": {
      "current_release_date": "2026-03-27T14:38:41.000Z",
      "cve": "CVE-2026-23266",
      "id": "msrc_CVE-2026-23266",
      "initial_release_date": "2026-03-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "fbdev: rivafb: fix divide error in nv3_arb()",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-23266.json",
      "version": "3"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23266\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-03-18T18:16:25.370\",\"lastModified\":\"2026-06-17T10:21:13.010\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfbdev: rivafb: fix divide error in nv3_arb()\\n\\nA userspace program can trigger the RIVA NV3 arbitration code by calling\\nthe FBIOPUT_VSCREENINFO ioctl on /dev/fb*. When doing so, the driver\\nrecomputes FIFO arbitration parameters in nv3_arb(), using state-\u003emclk_khz\\n(derived from the PRAMDAC MCLK PLL) as a divisor without validating it\\nfirst.\\n\\nIn a normal setup, state-\u003emclk_khz is provided by the real hardware and is\\nnon-zero. However, an attacker can construct a malicious or misconfigured\\ndevice (e.g. a crafted/emulated PCI device) that exposes a bogus PLL\\nconfiguration, causing state-\u003emclk_khz to become zero.  Once\\nnv3_get_param() calls nv3_arb(), the division by state-\u003emclk_khz in the gns\\ncalculation causes a divide error and crashes the kernel.\\n\\nFix this by checking whether state-\u003emclk_khz is zero and bailing out before\\ndoing the division.\\n\\nThe following log reveals it:\\n\\nrivafb: setting virtual Y resolution to 2184\\ndivide error: 0000 [#1] PREEMPT SMP KASAN PTI\\nCPU: 0 PID: 2187 Comm: syz-executor.0 Not tainted 5.18.0-rc1+ #1\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014\\nRIP: 0010:nv3_arb drivers/video/fbdev/riva/riva_hw.c:439 [inline]\\nRIP: 0010:nv3_get_param+0x3ab/0x13b0 drivers/video/fbdev/riva/riva_hw.c:546\\nCall Trace:\\n  nv3CalcArbitration.constprop.0+0x255/0x460 drivers/video/fbdev/riva/riva_hw.c:603\\n  nv3UpdateArbitrationSettings drivers/video/fbdev/riva/riva_hw.c:637 [inline]\\n  CalcStateExt+0x447/0x1b90 drivers/video/fbdev/riva/riva_hw.c:1246\\n  riva_load_video_mode+0x8a9/0xea0 drivers/video/fbdev/riva/fbdev.c:779\\n  rivafb_set_par+0xc0/0x5f0 drivers/video/fbdev/riva/fbdev.c:1196\\n  fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1033\\n  do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1109\\n  fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1188\\n  __x64_sys_ioctl+0x122/0x190 fs/ioctl.c:856\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\nfbdev: rivafb: corrige error de divisi\u00f3n en nv3_arb()\\n\\nUn programa de espacio de usuario puede activar el c\u00f3digo de arbitraje RIVA NV3 llamando al ioctl FBIOPUT_VSCREENINFO en /dev/fb*. Al hacerlo, el controlador recalcula los par\u00e1metros de arbitraje FIFO en nv3_arb(), usando state-\u0026gt;mclk_khz (derivado del PRAMDAC MCLK PLL) como divisor sin validarlo primero.\\n\\nEn una configuraci\u00f3n normal, state-\u0026gt;mclk_khz es proporcionado por el hardware real y no es cero. Sin embargo, un atacante puede construir un dispositivo malicioso o mal configurado (p. ej., un dispositivo PCI manipulado/emulado) que expone una configuraci\u00f3n PLL falsa, haciendo que state-\u0026gt;mclk_khz se vuelva cero. Una vez que nv3_get_param() llama a nv3_arb(), la divisi\u00f3n por state-\u0026gt;mclk_khz en el c\u00e1lculo de gns causa un error de divisi\u00f3n y bloquea el kernel.\\n\\nSolucione esto verificando si state-\u0026gt;mclk_khz es cero y saliendo antes de realizar la divisi\u00f3n.\\n\\nEl siguiente registro lo revela:\\n\\nrivafb: estableciendo la resoluci\u00f3n Y virtual a 2184\\nerror de divisi\u00f3n: 0000 [#1] PREEMPT SMP KASAN PTI\\nCPU: 0 PID: 2187 Comm: syz-executor.0 No contaminado 5.18.0-rc1+ #1\\nNombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014\\nRIP: 0010:nv3_arb drivers/video/fbdev/riva/riva_hw.c:439 [inline]\\nRIP: 0010:nv3_get_param+0x3ab/0x13b0 drivers/video/fbdev/riva/riva_hw.c:546\\nTraza de llamada:\\n  nv3CalcArbitration.constprop.0+0x255/0x460 drivers/video/fbdev/riva/riva_hw.c:603\\n  nv3UpdateArbitrationSettings drivers/video/fbdev/riva/riva_hw.c:637 [inline]\\n  CalcStateExt+0x447/0x1b90 drivers/video/fbdev/riva/riva_hw.c:1246\\n  riva_load_video_mode+0x8a9/0xea0 drivers/video/fbdev/riva/fbdev.c:779\\n  rivafb_set_par+0xc0/0x5f0 drivers/video/fbdev/riva/fbdev.c:1196\\n  fb_set_var+0x604/0xeb0 drivers/video/fbdev/core/fbmem.c:1033\\n  do_fb_ioctl+0x234/0x670 drivers/video/fbdev/core/fbmem.c:1109\\n  fb_ioctl+0xdd/0x130 drivers/video/fbdev/core/fbmem.c:1188\\n  __x64_sys_ioctl+0x122/0x190 fs/ioctl.c:856\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/video/fbdev/riva/riva_hw.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"ec5a58f4fd581875593ea92a65485e1906a53c0f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"52916878db2b8e3769743a94484729f0844352df\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"526460a96c5443e2fc0fd231edd1f9c49d2de26b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"78daf5984d96edec3b920c72a93bd6821b8710b7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"9efa0dc46270a8723c158c64afbcf1dead72b28c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"3e4cbd1d46c246dfa684c8e9d8c20ae0b960c50a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"73f0391e92d404da68f7484e57c106c5e673dc7e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2\",\"lessThan\":\"0209e21e3c372fa2da04c39214bec0b64e4eb5f4\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/video/fbdev/riva/riva_hw.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.251\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.201\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.164\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.127\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.74\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.13\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.3\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-369\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.12.1\",\"versionEndExcluding\":\"5.10.251\",\"matchCriteriaId\":\"CABFF5E9-C52A-4642-9228-1D6E483DA497\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.201\",\"matchCriteriaId\":\"600A89ED-86F2-48D8-BB7C-5EE7A8832FC5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.164\",\"matchCriteriaId\":\"6892F74B-3F14-4500-9652-24A2ECB04144\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.127\",\"matchCriteriaId\":\"4A9F36A3-A685-48A0-84B4-6217052BD058\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.74\",\"matchCriteriaId\":\"C2968F55-D03F-42BE-A694-F0A37BC8CBE3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.13\",\"matchCriteriaId\":\"6BDEF9FB-423E-49F6-991B-9277CC3AF400\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_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    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-28T07:19:49+00:00",
      "cve": "CVE-2026-23266",
      "id": "CVE-2026-23266",
      "initial_release_date": "2026-03-18T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: fbdev: rivafb: fix divide error in nv3_arb()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23266.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-15T05:30:44Z",
      "cve": "CVE-2026-23266",
      "id": "CVE-2026-23266",
      "initial_release_date": "2026-03-19T00:26:48Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "61",
      "product_status:known_not_affected": "204",
      "product_status:recommended": "268",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-23266",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-23266.json",
      "version": "10"
    }
  }
}



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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.