298 lines
16 KiB
JSON
298 lines
16 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2023-54198",
|
|
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Linux",
|
|
"dateReserved": "2025-12-30T12:06:44.499Z",
|
|
"datePublished": "2025-12-30T12:09:04.229Z",
|
|
"dateUpdated": "2026-10-15T21:41:41.131Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
|
|
"shortName": "Linux",
|
|
"dateUpdated": "2026-08-05T09:17:57.447Z"
|
|
},
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: fix out-of-bounds access in tty_driver_lookup_tty()\n\nWhen specifying an invalid console= device like console=tty3270,\ntty_driver_lookup_tty() returns the tty struct without checking\nwhether index is a valid number.\n\nTo reproduce:\n\nqemu-system-x86_64 -enable-kvm -nographic -serial mon:stdio \\\n-kernel ../linux-build-x86/arch/x86/boot/bzImage \\\n-append \"console=ttyS0 console=tty3270\"\n\nThis crashes with:\n\n[ 0.770599] BUG: kernel NULL pointer dereference, address: 00000000000000ef\n[ 0.771265] #PF: supervisor read access in kernel mode\n[ 0.771773] #PF: error_code(0x0000) - not-present page\n[ 0.772609] Oops: 0000 [#1] PREEMPT SMP PTI\n[ 0.774878] RIP: 0010:tty_open+0x268/0x6f0\n[ 0.784013] chrdev_open+0xbd/0x230\n[ 0.784444] ? cdev_device_add+0x80/0x80\n[ 0.784920] do_dentry_open+0x1e0/0x410\n[ 0.785389] path_openat+0xca9/0x1050\n[ 0.785813] do_filp_open+0xaa/0x150\n[ 0.786240] file_open_name+0x133/0x1b0\n[ 0.786746] filp_open+0x27/0x50\n[ 0.787244] console_on_rootfs+0x14/0x4d\n[ 0.787800] kernel_init_freeable+0x1e4/0x20d\n[ 0.788383] ? rest_init+0xc0/0xc0\n[ 0.788881] kernel_init+0x11/0x120\n[ 0.789356] ret_from_fork+0x22/0x30"
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
|
|
"baseScore": 7.8,
|
|
"baseSeverity": "HIGH"
|
|
},
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "AV:L - The out-of-bounds access is reached through a local `open()` syscall on the console character device (`tty_open` → `tty_open_by_driver` → `tty_driver_lookup_tty`); no network or physical interaction is part of the trigger itself.\nAC:L - On an affected system the OOB read fires deterministically on every open of the console device — no race, no timing window, and it is freely repeatable, which also lets an unprivileged process groom the adjacent slab objects that the read lands in.\nPR:L - Reaching the code needs only an open() of the console device, which on the plausible worst-case deployments (embedded/appliance and container images that expose /dev/console to non-root, busybox-style rootfs) is available to an ordinary local user; heap grooming to shape the wild pointer likewise needs no privilege.\nUI:N - No victim action is required — the attacker's own open() triggers the access, and on the reported path `console_on_rootfs()` hits it automatically during kernel init.\nS:U - The out-of-bounds read, the wild-pointer dereference and the refcount write all occur inside the kernel's own security authority; no VM, IOMMU or sandbox boundary is crossed.\nC:H - The read is an unbounded out-of-bounds fetch (index up to INT_MAX elements past a 63-entry array), and the value is then treated as a `struct tty_struct *` whose termios/ldisc/driver fields are dereferenced and exposed through the resulting tty file, giving arbitrary kernel-memory disclosure rather than a bounded few-byte leak.\nI:H - The garbage pointer is passed to `tty_kref_get()` → `refcount_inc()`, a read-modify-write at an attacker-influenced kernel address, followed by further writes in `tty_lock_interruptible()` and `tty_reopen()` (`tty->count++`, ldisc state) — a memory-corruption primitive usable for control-flow hijacking.\nA:H - The commit documents a kernel NULL-pointer dereference and Oops in `tty_open+0x268/0x6f0`; the wild-pointer dereference reliably panics the kernel, and on the boot path it prevents the system from coming up at all."
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"product": "Linux",
|
|
"vendor": "Linux",
|
|
"defaultStatus": "unaffected",
|
|
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
|
|
"programFiles": [
|
|
"drivers/tty/tty_io.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
|
|
"lessThan": "3df6f492f500a16c231f07ccc6f6ed1302caddf9",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
|
|
"lessThan": "b79109d6470aaae7062998353e3a19449055829d",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
|
|
"lessThan": "953a4a352a0c185460ae1449e4c6e6658e55fdfc",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
|
|
"lessThan": "84ea44dc3e4ecb2632586238014bf6722aa5843b",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
|
|
"lessThan": "f9d9d25ad1f0d060eaf297a2f7f03b5855a45561",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
|
|
"lessThan": "765566110eb0da3cf60198b0165ecceeaafa6444",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
|
|
"lessThan": "fcfeaa570f7a5c2d5f4f14931909531ff18b7fde",
|
|
"status": "affected",
|
|
"versionType": "git"
|
|
},
|
|
{
|
|
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
|
|
"lessThan": "db4df8e9d79e7d37732c1a1b560958e8dadfefa1",
|
|
"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/tty/tty_io.c"
|
|
],
|
|
"versions": [
|
|
{
|
|
"version": "2.6.28",
|
|
"status": "affected"
|
|
},
|
|
{
|
|
"version": "0",
|
|
"lessThan": "2.6.28",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "4.14.308",
|
|
"lessThanOrEqual": "4.14.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "4.19.276",
|
|
"lessThanOrEqual": "4.19.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.4.235",
|
|
"lessThanOrEqual": "5.4.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.10.173",
|
|
"lessThanOrEqual": "5.10.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "5.15.100",
|
|
"lessThanOrEqual": "5.15.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.1.18",
|
|
"lessThanOrEqual": "6.1.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.2.5",
|
|
"lessThanOrEqual": "6.2.*",
|
|
"status": "unaffected",
|
|
"versionType": "semver"
|
|
},
|
|
{
|
|
"version": "6.3",
|
|
"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": "2.6.28",
|
|
"versionEndExcluding": "4.14.308"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.28",
|
|
"versionEndExcluding": "4.19.276"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.28",
|
|
"versionEndExcluding": "5.4.235"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.28",
|
|
"versionEndExcluding": "5.10.173"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.28",
|
|
"versionEndExcluding": "5.15.100"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.28",
|
|
"versionEndExcluding": "6.1.18"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.28",
|
|
"versionEndExcluding": "6.2.5"
|
|
},
|
|
{
|
|
"vulnerable": true,
|
|
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
|
|
"versionStartIncluding": "2.6.28",
|
|
"versionEndExcluding": "6.3"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/3df6f492f500a16c231f07ccc6f6ed1302caddf9"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/b79109d6470aaae7062998353e3a19449055829d"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/953a4a352a0c185460ae1449e4c6e6658e55fdfc"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/84ea44dc3e4ecb2632586238014bf6722aa5843b"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/f9d9d25ad1f0d060eaf297a2f7f03b5855a45561"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/765566110eb0da3cf60198b0165ecceeaafa6444"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/fcfeaa570f7a5c2d5f4f14931909531ff18b7fde"
|
|
},
|
|
{
|
|
"url": "https://git.kernel.org/stable/c/db4df8e9d79e7d37732c1a1b560958e8dadfefa1"
|
|
}
|
|
],
|
|
"title": "tty: fix out-of-bounds access in tty_driver_lookup_tty()",
|
|
"x_generator": {
|
|
"engine": "bippy-1.2.0"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"id": "CVE-2023-54198",
|
|
"role": "CISA Coordinator",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "total"
|
|
}
|
|
],
|
|
"version": "2.0.3",
|
|
"timestamp": "2026-10-15T21:38:58.741580Z"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-10-15T21:41:41.131Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |