serial: core: do fallible allocations before the console can be registered
In the Linux kernel, the following vulnerability has been resolved: serial: core: do fallible allocations before the console can be registered serial_core_add_one_port() allocates uport->tty_groups after uart_configure_port(), which may register the console. If the allocation fails, the driver unwinds the port while its console remains registered. The earlier uport->name allocation has a related failure path that leaves state->uart_port linked to a port being freed. Failslab reproduced a NULL dereference in PL011 console output and a KASAN use-after-free in i.MX console output after failed binds. Allocate the name and tty_groups before linking the port and configuring it. Reserve space for the optional driver attribute group because config_port() may populate uport->attr_group during configuration.
CVE-2026-90337
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-2026-90337
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": "266dcff03eed0050b6af11aaf2a61ab837d7ba3f",
"lessThan": "e2ddbfd826836cba1b7a25ee4eb512f7d752b703",
"versionType": "git"
},
{
"status": "affected",
"version": "266dcff03eed0050b6af11aaf2a61ab837d7ba3f",
"lessThan": "8c7c75bfa7b84d6999de2100ce9c09e3779249a0",
"versionType": "git"
},
{
"status": "affected",
"version": "266dcff03eed0050b6af11aaf2a61ab837d7ba3f",
"lessThan": "9260a92ce90e6a95ce2ffdf1441c5216bf3f9552",
"versionType": "git"
},
{
"status": "affected",
"version": "266dcff03eed0050b6af11aaf2a61ab837d7ba3f",
"lessThan": "c2aec15f78b2e6ccd9b94216a901248511355982",
"versionType": "git"
},
{
"status": "affected",
"version": "266dcff03eed0050b6af11aaf2a61ab837d7ba3f",
"lessThan": "1a0e4fbce5d9c1bc179a35a2fd9ed142664299e3",
"versionType": "git"
}
],
"programFiles": [
"drivers/tty/serial/serial_core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.17"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.17",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/tty/serial/serial_core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90337
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48669 · Revision 1
- Added to Heist Feed
- Publisher date