{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-14T23:53:44.335","vulnerabilities":[{"cve":{"id":"CVE-2021-47641","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-02-26T06:37:05.883","lastModified":"2025-10-01T20:15:41.270","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvideo: fbdev: cirrusfb: check pixclock to avoid divide by zero\n\nDo a sanity check on pixclock value to avoid divide by zero.\n\nIf the pixclock value is zero, the cirrusfb driver will round up\npixclock to get the derived frequency as close to maxclock as\npossible.\n\nSyzkaller reported a divide error in cirrusfb_check_pixclock.\n\ndivide error: 0000 [#1] SMP KASAN PTI\nCPU: 0 PID: 14938 Comm: cirrusfb_test Not tainted 5.15.0-rc6 #1\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2\nRIP: 0010:cirrusfb_check_var+0x6f1\/0x1260\n\nCall Trace:\n fb_set_var+0x398\/0xf90\n do_fb_ioctl+0x4b8\/0x6f0\n fb_ioctl+0xeb\/0x130\n __x64_sys_ioctl+0x19d\/0x220\n do_syscall_64+0x3a\/0x80\n entry_SYSCALL_64_after_hwframe+0x44\/0xae"},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: video: fbdev: cirrusfb: comprobar pixclock para evitar la división por cero Realice una comprobación de la depuración del valor de pixclock para evitar la división por cero. Si el valor de pixclock es cero, el controlador cirrusfb redondeará el valor de pixclock para obtener la frecuencia derivada lo más cercana posible a maxclock. Syzkaller informó un error de división en cirrusfb_check_pixclock. Error de división: 0000 [#1] SMP KASAN PTI CPU: 0 PID: 14938 Comm: cirrusfb_test No contaminado 5.15.0-rc6 #1 Nombre del hardware: PC estándar QEMU (i440FX + PIIX, 1996), BIOS 1.11.0-2 RIP: 0010:cirrusfb_check_var+0x6f1\/0x1260 Seguimiento de llamadas: fb_set_var+0x398\/0xf90 do_fb_ioctl+0x4b8\/0x6f0 fb_ioctl+0xeb\/0x130 __x64_sys_ioctl+0x19d\/0x220 do_syscall_64+0x3a\/0x80 entry_SYSCALL_64_after_hwframe+0x44\/0xae"}],"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},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","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"}]},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-369"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.9.311","matchCriteriaId":"C86EFD13-93D4-4385-83E8-C665BE8F570F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"4.14.276","matchCriteriaId":"6D9B028C-6313-47F9-94B7-5F8122345E49"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.238","matchCriteriaId":"FA28527A-11D3-41D2-9C4C-ECAC0D6A4A2D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.189","matchCriteriaId":"8CB6E8F5-C2B1-46F3-A807-0F6104AC340F"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.110","matchCriteriaId":"91D3BFD0-D3F3-4018-957C-96CCBF357D79"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.33","matchCriteriaId":"27C42AE8-B387-43E2-938A-E1C8B40BE6D5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"5.16.19","matchCriteriaId":"20C43679-0439-405A-B97F-685BEE50613B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.17","versionEndExcluding":"5.17.2","matchCriteriaId":"210C679C-CF84-44A3-8939-E629C87E54BF"}]}]}],"references":[{"url":"https:\/\/git.kernel.org\/stable\/c\/1d3fb46439ad4e8f0c5739eb33d1875ac9e0f135","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https:\/\/git.kernel.org\/stable\/c\/40b13e3d85744210db13457785646634e2d056bd","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https:\/\/git.kernel.org\/stable\/c\/45800c42ef000f417270bcfc08630e42486fca99","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https:\/\/git.kernel.org\/stable\/c\/53a2088a396cfa1da92690a1da289634cd73bf0d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https:\/\/git.kernel.org\/stable\/c\/5c6f402bdcf9e7239c6bc7087eda71ac99b31379","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https:\/\/git.kernel.org\/stable\/c\/6fe23ff94e7840097202e85c148688940b37c9b1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https:\/\/git.kernel.org\/stable\/c\/8c7e2141fb89c620ab4e41512e262fbf25b8260d","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https:\/\/git.kernel.org\/stable\/c\/c656d04247a2654ede5cead2ecbf83431dad5261","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https:\/\/git.kernel.org\/stable\/c\/e498b504f8c81b07efab9febf8503448de4dc9cf","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}