206 lines
10 KiB
JSON
206 lines
10 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-93050",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2026-09-17T15:57:05.658Z",
|
|
"datePublished": "2026-09-17T16:10:40.360Z",
|
|
"dateUpdated": "2026-10-19T09:04:45.286Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-10-19T09:04:45.286Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nipack: ipoctal: fix UAF, null-ptr-deref, and use-after-free in cleanup on remove\n\nThree issues arise when the device is removed while a tty session is\nstill active:\n\n1. UAF of struct ipoctal: the remove callback frees ipoctal via\n kfree() while tty ops may still access it. Fix by introducing\n kref-based lifetime management — kref is taken in install() when\n a tty is opened and released in cleanup() when the tty is finally\n destroyed; remove() uses kref_put() instead of kfree().\n\n2. NULL dereference in ipoctal_write_tty(): __ipoctal_remove()\n frees xmit_buf via tty_port_free_xmit_buf() while a userspace\n process may still hold the tty fd and call write(). Fix by\n checking for NULL xmit_buf in ipoctal_write_tty().\n\n3. UAF in ipoctal_cleanup(): ipack_put_carrier(ipoctal->dev)\n dereferences ipoctal->dev after the ipack_device has been freed\n by ipack_device_del(). Fix by caching ipoctal->carrier_owner\n during probe() and calling module_put() on the cached pointer\n directly in cleanup(), avoiding any access to ipoctal->dev.\n\nAlso introduce a \"removed\" flag in struct ipoctal, set at the start\nof __ipoctal_remove(), and checked in every tty op that accesses\nhardware resources (port_activate, write_tty, set_termios, hangup,\nshutdown). This prevents page faults when devm_ioremap() regions\nare unmapped after remove() returns."
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/ipack/devices/ipoctal.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "05e5027efc9c0bb6d1d04cde279afbafca0a7929",
|
|
"lessThan": "ab5f5b27a340004b92252c6a5f23bf1c6cf3b02a",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "05e5027efc9c0bb6d1d04cde279afbafca0a7929",
|
|
"lessThan": "c92ef8fd834521f0b788e0511976c689fe57c63c",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "05e5027efc9c0bb6d1d04cde279afbafca0a7929",
|
|
"lessThan": "a4613140f01bd0fb9980e2746ed9aaa65a29b5d6",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "05e5027efc9c0bb6d1d04cde279afbafca0a7929",
|
|
"lessThan": "1a3258e105f711538201bdd2ac2a05b11554eabc",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "05e5027efc9c0bb6d1d04cde279afbafca0a7929",
|
|
"lessThan": "4a6518be316029650301f2a5e8f0def229b895d9",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "05e5027efc9c0bb6d1d04cde279afbafca0a7929",
|
|
"lessThan": "b6b5d64cb161a28347d64dc3168a636c4abb68d5",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "affected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/ipack/devices/ipoctal.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "3.8",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "3.8",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.188",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.6.157",
|
|
"lessThanOrEqual": "6.6.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.12.110",
|
|
"lessThanOrEqual": "6.12.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.18.52",
|
|
"lessThanOrEqual": "6.18.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.2.6",
|
|
"lessThanOrEqual": "7.2.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "7.3",
|
|
"lessThanOrEqual": "*",
|
|
"status": "unaffected",
|
|
"versionType": "original_commit_for_fix"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"cpeApplicability": [
|
|
{
|
|
"nodes": [
|
|
{
|
|
"operator": "OR",
|
|
"negate": false,
|
|
"cpeMatch": [
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "6.1.188"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "6.6.157"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "6.12.110"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "6.18.52"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "7.2.6"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "3.8",
|
|
"versionEndExcluding": "7.3"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/ab5f5b27a340004b92252c6a5f23bf1c6cf3b02a"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/c92ef8fd834521f0b788e0511976c689fe57c63c"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/a4613140f01bd0fb9980e2746ed9aaa65a29b5d6"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/1a3258e105f711538201bdd2ac2a05b11554eabc"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/4a6518be316029650301f2a5e8f0def229b895d9"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/b6b5d64cb161a28347d64dc3168a636c4abb68d5"
|
|
}
|
|
],
|
|
"title": "ipack: ipoctal: fix UAF, null-ptr-deref, and use-after-free in cleanup on remove",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
}
|
|
}
|
|
} |