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vuln-cve/data/2021/47xxx/CVE-2021-47457.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2021-47457",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2024-05-21T14:58:30.833Z",
"datePublished": "2024-05-22T06:19:46.021Z",
"dateUpdated": "2026-05-11T13:55:05.637Z"
},
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"cna": {
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"shortName": "Linux",
"dateUpdated": "2026-05-11T13:55:05.637Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: isotp: isotp_sendmsg(): add result check for wait_event_interruptible()\n\nUsing wait_event_interruptible() to wait for complete transmission,\nbut do not check the result of wait_event_interruptible() which can be\ninterrupted. It will result in TX buffer has multiple accessors and\nthe later process interferes with the previous process.\n\nFollowing is one of the problems reported by syzbot.\n\n=============================================================\nWARNING: CPU: 0 PID: 0 at net/can/isotp.c:840 isotp_tx_timer_handler+0x2e0/0x4c0\nCPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.13.0-rc7+ #68\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1 04/01/2014\nRIP: 0010:isotp_tx_timer_handler+0x2e0/0x4c0\nCall Trace:\n <IRQ>\n ? isotp_setsockopt+0x390/0x390\n __hrtimer_run_queues+0xb8/0x610\n hrtimer_run_softirq+0x91/0xd0\n ? rcu_read_lock_sched_held+0x4d/0x80\n __do_softirq+0xe8/0x553\n irq_exit_rcu+0xf8/0x100\n sysvec_apic_timer_interrupt+0x9e/0xc0\n </IRQ>\n asm_sysvec_apic_timer_interrupt+0x12/0x20\n\nAdd result check for wait_event_interruptible() in isotp_sendmsg()\nto avoid multiple accessers for tx buffer."
}
],
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"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/can/isotp.c"
],
"versions": [
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"version": "e057dd3fc20ffb3d7f150af46542a51b59b90127",
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"status": "affected",
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"lessThan": "a76abedd2be3926d6deba236a935c7f98abf9110",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
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"versions": [
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"version": "5.10",
"status": "affected"
},
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"version": "0",
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"status": "unaffected",
"versionType": "semver"
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{
"version": "5.14.15",
"lessThanOrEqual": "5.14.*",
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},
{
"version": "5.15",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
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"cpeApplicability": [
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"operator": "OR",
"negate": false,
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"versionEndExcluding": "5.10.76"
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{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"references": [
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"url": "https://git.kernel.org/stable/c/053bc12df0d6097c1126d0e14fa778a0a8faeb64"
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"url": "https://git.kernel.org/stable/c/a76abedd2be3926d6deba236a935c7f98abf9110"
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{
"url": "https://git.kernel.org/stable/c/9acf636215a6ce9362fe618e7da4913b8bfe84c8"
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"title": "can: isotp: isotp_sendmsg(): add result check for wait_event_interruptible()",
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"version": "2.0.3",
"timestamp": "2024-05-22T15:53:56.304705Z"
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