227 lines
12 KiB
JSON
227 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-68335",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2025-12-16T14:48:05.297Z",
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"datePublished": "2025-12-22T16:14:12.614Z",
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"dateUpdated": "2026-05-11T21:51:12.073Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-11T21:51:12.073Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: pcl818: fix null-ptr-deref in pcl818_ai_cancel()\n\nSyzbot identified an issue [1] in pcl818_ai_cancel(), which stems from\nthe fact that in case of early device detach via pcl818_detach(),\nsubdevice dev->read_subdev may not have initialized its pointer to\n&struct comedi_async as intended. Thus, any such dereferencing of\n&s->async->cmd will lead to general protection fault and kernel crash.\n\nMitigate this problem by removing a call to pcl818_ai_cancel() from\npcl818_detach() altogether. This way, if the subdevice setups its\nsupport for async commands, everything async-related will be\nhandled via subdevice's own ->cancel() function in\ncomedi_device_detach_locked() even before pcl818_detach(). If no\nsupport for asynchronous commands is provided, there is no need\nto cancel anything either.\n\n[1] Syzbot crash:\nOops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN PTI\nKASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]\nCPU: 1 UID: 0 PID: 6050 Comm: syz.0.18 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025\nRIP: 0010:pcl818_ai_cancel+0x69/0x3f0 drivers/comedi/drivers/pcl818.c:762\n...\nCall Trace:\n <TASK>\n pcl818_detach+0x66/0xd0 drivers/comedi/drivers/pcl818.c:1115\n comedi_device_detach_locked+0x178/0x750 drivers/comedi/drivers.c:207\n do_devconfig_ioctl drivers/comedi/comedi_fops.c:848 [inline]\n comedi_unlocked_ioctl+0xcde/0x1020 drivers/comedi/comedi_fops.c:2178\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:597 [inline]\n..."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/comedi/drivers/pcl818.c"
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],
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"versions": [
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{
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"version": "00aba6e7b5653a6607238ecdab7172318059d984",
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"lessThan": "b2a5b172dc05be6c4f2c5542c1bbc6b14d60ff16",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "00aba6e7b5653a6607238ecdab7172318059d984",
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"lessThan": "935ad4b3c325c24fff2c702da403283025ffc722",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "00aba6e7b5653a6607238ecdab7172318059d984",
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"lessThan": "88d99ca5adbd01ff088f5fb2ddeba5755e085e52",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "00aba6e7b5653a6607238ecdab7172318059d984",
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"lessThan": "5caa40e7c6a43e08e3574f990865127705c22861",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "00aba6e7b5653a6607238ecdab7172318059d984",
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"lessThan": "d948c53dec36dafe182631457597c49c1f1df5ea",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "00aba6e7b5653a6607238ecdab7172318059d984",
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"lessThan": "877adccfacb32687b90714a27cfb09f444fdfa16",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "00aba6e7b5653a6607238ecdab7172318059d984",
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"lessThan": "a51f025b5038abd3d22eed2ede4cd46793d89565",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/comedi/drivers/pcl818.c"
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],
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"versions": [
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{
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"version": "3.15",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "3.15",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.198",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.160",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.120",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.62",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.17.12",
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"lessThanOrEqual": "6.17.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.1",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.19",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.15",
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"versionEndExcluding": "5.15.198"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.15",
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"versionEndExcluding": "6.1.160"
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.15",
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"versionEndExcluding": "6.17.12"
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.15",
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"versionEndExcluding": "6.18.1"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "3.15",
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"versionEndExcluding": "6.19"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/b2a5b172dc05be6c4f2c5542c1bbc6b14d60ff16"
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},
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{
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"url": "https://git.kernel.org/stable/c/935ad4b3c325c24fff2c702da403283025ffc722"
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},
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{
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"url": "https://git.kernel.org/stable/c/88d99ca5adbd01ff088f5fb2ddeba5755e085e52"
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},
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{
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"url": "https://git.kernel.org/stable/c/5caa40e7c6a43e08e3574f990865127705c22861"
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},
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{
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"url": "https://git.kernel.org/stable/c/d948c53dec36dafe182631457597c49c1f1df5ea"
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},
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{
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"url": "https://git.kernel.org/stable/c/877adccfacb32687b90714a27cfb09f444fdfa16"
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},
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{
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"url": "https://git.kernel.org/stable/c/a51f025b5038abd3d22eed2ede4cd46793d89565"
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}
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],
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"title": "comedi: pcl818: fix null-ptr-deref in pcl818_ai_cancel()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |