tty: fix out-of-bounds access in tty_driver_lookup_tty()
In the Linux kernel, the following vulnerability has been resolved: tty: fix out-of-bounds access in tty_driver_lookup_tty() When specifying an invalid console= device like console=tty3270, tty_driver_lookup_tty() returns the tty struct without checking whether index is a valid number. To reproduce: qemu-system-x86_64 -enable-kvm -nographic -serial mon:stdio \ -kernel ../linux-build-x86/arch/x86/boot/bzImage \ -append "console=ttyS0 console=tty3270" This crashes with: [ 0.770599] BUG: kernel NULL pointer dereference, address: 00000000000000ef [ 0.771265] #PF: supervisor read access in kernel mode [ 0.771773] #PF: error_code(0x0000) - not-present page [ 0.772609] Oops: 0000 [#1] PREEMPT SMP PTI [ 0.774878] RIP: 0010:tty_open+0x268/0x6f0 [ 0.784013] chrdev_open+0xbd/0x230 [ 0.784444] ? cdev_device_add+0x80/0x80 [ 0.784920] do_dentry_open+0x1e0/0x410 [ 0.785389] path_openat+0xca9/0x1050 [ 0.785813] do_filp_open+0xaa/0x150 [ 0.786240] file_open_name+0x133/0x1b0 [ 0.786746] filp_open+0x27/0x50 [ 0.787244] console_on_rootfs+0x14/0x4d [ 0.787800] kernel_init_freeable+0x1e4/0x20d [ 0.788383] ? rest_init+0xc0/0xc0 [ 0.788881] kernel_init+0x11/0x120 [ 0.789356] ret_from_fork+0x22/0x30
CVE-2023-54198
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2023-54198
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
"lessThan": "3df6f492f500a16c231f07ccc6f6ed1302caddf9",
"versionType": "git"
},
{
"status": "affected",
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
"lessThan": "b79109d6470aaae7062998353e3a19449055829d",
"versionType": "git"
},
{
"status": "affected",
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
"lessThan": "953a4a352a0c185460ae1449e4c6e6658e55fdfc",
"versionType": "git"
},
{
"status": "affected",
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
"lessThan": "84ea44dc3e4ecb2632586238014bf6722aa5843b",
"versionType": "git"
},
{
"status": "affected",
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
"lessThan": "f9d9d25ad1f0d060eaf297a2f7f03b5855a45561",
"versionType": "git"
},
{
"status": "affected",
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
"lessThan": "765566110eb0da3cf60198b0165ecceeaafa6444",
"versionType": "git"
},
{
"status": "affected",
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
"lessThan": "fcfeaa570f7a5c2d5f4f14931909531ff18b7fde",
"versionType": "git"
},
{
"status": "affected",
"version": "99f1fe189daf8e99a847e420567e49dd7ee2aae7",
"lessThan": "db4df8e9d79e7d37732c1a1b560958e8dadfefa1",
"versionType": "git"
}
],
"programFiles": [
"drivers/tty/tty_io.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.28"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.28",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.14.308",
"versionType": "semver",
"lessThanOrEqual": "4.14.*"
},
{
"status": "unaffected",
"version": "4.19.276",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.235",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.173",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.100",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.18",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.2.5",
"versionType": "semver",
"lessThanOrEqual": "6.2.*"
},
{
"status": "unaffected",
"version": "6.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/tty/tty_io.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2023-54198
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30356 · Revision 1
- Added to Heist Feed
- Publisher date