serial: protect uart_port_dtr_rts() in uart_shutdown() too
In the Linux kernel, the following vulnerability has been resolved: serial: protect uart_port_dtr_rts() in uart_shutdown() too Commit af224ca2df29 (serial: core: Prevent unsafe uart port access, part 3) added few uport == NULL checks. It added one to uart_shutdown(), so the commit assumes, uport can be NULL in there. But right after that protection, there is an unprotected "uart_port_dtr_rts(uport, false);" call. That is invoked only if HUPCL is set, so I assume that is the reason why we do not see lots of these reports. Or it cannot be NULL at this point at all for some reason :P. Until the above is investigated, stay on the safe side and move this dereference to the if too. I got this inconsistency from Coverity under CID 1585130. Thanks.
CVE-2024-50058
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-2024-50058
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": "af224ca2df297440448b9d407d21b50982c6d532",
"lessThan": "2fe399bb8efd0d325ab1138cf8e3ecf23a39e96d",
"versionType": "git"
},
{
"status": "affected",
"version": "af224ca2df297440448b9d407d21b50982c6d532",
"lessThan": "399927f0f875b93f3d5a0336d382ba48b8671eb2",
"versionType": "git"
},
{
"status": "affected",
"version": "af224ca2df297440448b9d407d21b50982c6d532",
"lessThan": "d7b5876a6e74cdf8468a478be6b23f2f5464ac7a",
"versionType": "git"
},
{
"status": "affected",
"version": "af224ca2df297440448b9d407d21b50982c6d532",
"lessThan": "e418d91195d29d5f9c9685ff309b92b04b41dc40",
"versionType": "git"
},
{
"status": "affected",
"version": "af224ca2df297440448b9d407d21b50982c6d532",
"lessThan": "76ed24a34223bb2c6b6162e1d8389ec4e602a290",
"versionType": "git"
},
{
"status": "affected",
"version": "af224ca2df297440448b9d407d21b50982c6d532",
"lessThan": "602babaa84d627923713acaf5f7e9a4369e77473",
"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": "4.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.229",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.170",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.115",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.57",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.11.4",
"versionType": "semver",
"lessThanOrEqual": "6.11.*"
},
{
"status": "unaffected",
"version": "6.12",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/tty/serial/serial_core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2024-50058
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #26781 · Revision 1
- Added to Heist Feed
- Publisher date