cve-2024-43893
Vulnerability from cvelistv5
Published
2024-08-26 10:10
Modified
2024-12-19 09:17
Severity ?
EPSS score ?
Summary
serial: core: check uartclk for zero to avoid divide by zero
References
{
"containers": {
"adp": [
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"metrics": [
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"other": {
"content": {
"id": "CVE-2024-43893",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-09-10T15:29:15.877067Z",
"version": "2.0.3"
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"type": "ssvc"
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"providerMetadata": {
"dateUpdated": "2024-09-12T17:32:57.839Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/tty/serial/serial_core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "3bbd90fca824e6fd61fb20f6dd2b0fa5f8b14bba",
"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
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"lessThan": "55b2a5d331a6ceb1c4372945fdb77181265ba24f",
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"versionType": "git"
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"lessThan": "52b138f1021113e593ee6ad258ce08fe90693a9e",
"status": "affected",
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"versionType": "git"
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"status": "affected",
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"versionType": "git"
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{
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"status": "affected",
"version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
"versionType": "git"
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]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/tty/serial/serial_core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.320",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.282",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.224",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.165",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.105",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.46",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.10.*",
"status": "unaffected",
"version": "6.10.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.11",
"versionType": "original_commit_for_fix"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: core: check uartclk for zero to avoid divide by zero\n\nCalling ioctl TIOCSSERIAL with an invalid baud_base can\nresult in uartclk being zero, which will result in a\ndivide by zero error in uart_get_divisor(). The check for\nuartclk being zero in uart_set_info() needs to be done\nbefore other settings are made as subsequent calls to\nioctl TIOCSSERIAL for the same port would be impacted if\nthe uartclk check was done where uartclk gets set.\n\nOops: divide error: 0000 PREEMPT SMP KASAN PTI\nRIP: 0010:uart_get_divisor (drivers/tty/serial/serial_core.c:580)\nCall Trace:\n \u003cTASK\u003e\nserial8250_get_divisor (drivers/tty/serial/8250/8250_port.c:2576\n drivers/tty/serial/8250/8250_port.c:2589)\nserial8250_do_set_termios (drivers/tty/serial/8250/8250_port.c:502\n drivers/tty/serial/8250/8250_port.c:2741)\nserial8250_set_termios (drivers/tty/serial/8250/8250_port.c:2862)\nuart_change_line_settings (./include/linux/spinlock.h:376\n ./include/linux/serial_core.h:608 drivers/tty/serial/serial_core.c:222)\nuart_port_startup (drivers/tty/serial/serial_core.c:342)\nuart_startup (drivers/tty/serial/serial_core.c:368)\nuart_set_info (drivers/tty/serial/serial_core.c:1034)\nuart_set_info_user (drivers/tty/serial/serial_core.c:1059)\ntty_set_serial (drivers/tty/tty_io.c:2637)\ntty_ioctl (drivers/tty/tty_io.c:2647 drivers/tty/tty_io.c:2791)\n__x64_sys_ioctl (fs/ioctl.c:52 fs/ioctl.c:907\n fs/ioctl.c:893 fs/ioctl.c:893)\ndo_syscall_64 (arch/x86/entry/common.c:52\n (discriminator 1) arch/x86/entry/common.c:83 (discriminator 1))\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\nRule: add"
}
],
"providerMetadata": {
"dateUpdated": "2024-12-19T09:17:57.891Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/3bbd90fca824e6fd61fb20f6dd2b0fa5f8b14bba"
},
{
"url": "https://git.kernel.org/stable/c/55b2a5d331a6ceb1c4372945fdb77181265ba24f"
},
{
"url": "https://git.kernel.org/stable/c/52b138f1021113e593ee6ad258ce08fe90693a9e"
},
{
"url": "https://git.kernel.org/stable/c/9196e42a3b8eeff1707e6ef769112b4b6096be49"
},
{
"url": "https://git.kernel.org/stable/c/e13ba3fe5ee070f8a9dab60029d52b1f61da5051"
},
{
"url": "https://git.kernel.org/stable/c/e3ad503876283ac3fcca922a1bf243ef9eb0b0e2"
},
{
"url": "https://git.kernel.org/stable/c/68dc02f319b9ee54dc23caba742a5c754d1cccc8"
},
{
"url": "https://git.kernel.org/stable/c/6eabce6608d6f3440f4c03aa3d3ef50a47a3d193"
}
],
"title": "serial: core: check uartclk for zero to avoid divide by zero",
"x_generator": {
"engine": "bippy-5f407fcff5a0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-43893",
"datePublished": "2024-08-26T10:10:48.046Z",
"dateReserved": "2024-08-17T09:11:59.290Z",
"dateUpdated": "2024-12-19T09:17:57.891Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2024-43893\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-08-26T11:15:04.213\",\"lastModified\":\"2024-09-10T18:13:21.920\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nserial: core: check uartclk for zero to avoid divide by zero\\n\\nCalling ioctl TIOCSSERIAL with an invalid baud_base can\\nresult in uartclk being zero, which will result in a\\ndivide by zero error in uart_get_divisor(). The check for\\nuartclk being zero in uart_set_info() needs to be done\\nbefore other settings are made as subsequent calls to\\nioctl TIOCSSERIAL for the same port would be impacted if\\nthe uartclk check was done where uartclk gets set.\\n\\nOops: divide error: 0000 PREEMPT SMP KASAN PTI\\nRIP: 0010:uart_get_divisor (drivers/tty/serial/serial_core.c:580)\\nCall Trace:\\n \u003cTASK\u003e\\nserial8250_get_divisor (drivers/tty/serial/8250/8250_port.c:2576\\n drivers/tty/serial/8250/8250_port.c:2589)\\nserial8250_do_set_termios (drivers/tty/serial/8250/8250_port.c:502\\n drivers/tty/serial/8250/8250_port.c:2741)\\nserial8250_set_termios (drivers/tty/serial/8250/8250_port.c:2862)\\nuart_change_line_settings (./include/linux/spinlock.h:376\\n ./include/linux/serial_core.h:608 drivers/tty/serial/serial_core.c:222)\\nuart_port_startup (drivers/tty/serial/serial_core.c:342)\\nuart_startup (drivers/tty/serial/serial_core.c:368)\\nuart_set_info (drivers/tty/serial/serial_core.c:1034)\\nuart_set_info_user (drivers/tty/serial/serial_core.c:1059)\\ntty_set_serial (drivers/tty/tty_io.c:2637)\\ntty_ioctl (drivers/tty/tty_io.c:2647 drivers/tty/tty_io.c:2791)\\n__x64_sys_ioctl (fs/ioctl.c:52 fs/ioctl.c:907\\n fs/ioctl.c:893 fs/ioctl.c:893)\\ndo_syscall_64 (arch/x86/entry/common.c:52\\n (discriminator 1) arch/x86/entry/common.c:83 (discriminator 1))\\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\\n\\nRule: add\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: serial: core: verifique uartclk en busca de cero para evitar la divisi\u00f3n por cero. Llamar a ioctl TIOCSSERIAL con un baud_base no v\u00e1lido puede resultar en que uartclk sea cero, lo que resultar\u00e1 en un error de divisi\u00f3n por cero en uart_get_divisor (). La verificaci\u00f3n de que uartclk sea cero en uart_set_info() debe realizarse antes de realizar otras configuraciones, ya que las llamadas posteriores a ioctl TIOCSSERIAL para el mismo puerto se ver\u00edan afectadas si la verificaci\u00f3n de uartclk se realiz\u00f3 donde se establece uartclk. Vaya: error de divisi\u00f3n: 0000 PREEMPT SMP KASAN PTI RIP: 0010:uart_get_divisor (drivers/tty/serial/serial_core.c:580) Seguimiento de llamadas: serial8250_get_divisor (drivers/tty/serial/8250/8250_port.c:2576 drivers /tty/serial/8250/8250_port.c:2589) serial8250_do_set_termios (drivers/tty/serial/8250/8250_port.c:502 drivers/tty/serial/8250/8250_port.c:2741) serial8250_set_termios (drivers/tty/serial/ 8250/8250_port.c:2862) uart_change_line_settings (./include/linux/spinlock.h:376 ./include/linux/serial_core.h:608 drivers/tty/serial/serial_core.c:222) uart_port_startup (drivers/tty/ serial/serial_core.c:342) uart_startup (drivers/tty/serial/serial_core.c:368) uart_set_info (drivers/tty/serial/serial_core.c:1034) uart_set_info_user (drivers/tty/serial/serial_core.c:1059) tty_set_serial (drivers/tty/tty_io.c:2637) tty_ioctl (drivers/tty/tty_io.c:2647 drivers/tty/tty_io.c:2791) __x64_sys_ioctl (fs/ioctl.c:52 fs/ioctl.c:907 fs /ioctl.c:893 fs/ioctl.c:893) do_syscall_64 (arch/x86/entry/common.c:52 (discriminador 1) arch/x86/entry/common.c:83 (discriminador 1)) Entry_SYSCALL_64_after_hwframe (arch /x86/entry/entry_64.S:130) Regla: agregar\"}],\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\"},\"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:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.19.320\",\"matchCriteriaId\":\"0B4EF915-550B-45E5-B2CA-648FEACD60FC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.282\",\"matchCriteriaId\":\"A8961D98-9ACF-4188-BA88-44038B14BC28\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.224\",\"matchCriteriaId\":\"5CCEDF13-293D-4E64-B501-4409D0365AFE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.165\",\"matchCriteriaId\":\"B4E2B568-3171-41DE-B519-F2B1A3600D94\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.105\",\"matchCriteriaId\":\"89BEB24B-0F37-4C92-A397-564DA7CD8EE9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.46\",\"matchCriteriaId\":\"FA11941E-81FB-484C-B583-881EEB488340\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.5\",\"matchCriteriaId\":\"D074AE50-4A5E-499C-A2FD-75FD60DEA560\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3bbd90fca824e6fd61fb20f6dd2b0fa5f8b14bba\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/52b138f1021113e593ee6ad258ce08fe90693a9e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/55b2a5d331a6ceb1c4372945fdb77181265ba24f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/68dc02f319b9ee54dc23caba742a5c754d1cccc8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6eabce6608d6f3440f4c03aa3d3ef50a47a3d193\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9196e42a3b8eeff1707e6ef769112b4b6096be49\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e13ba3fe5ee070f8a9dab60029d52b1f61da5051\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e3ad503876283ac3fcca922a1bf243ef9eb0b0e2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
}
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.