In the Linux kernel, the following vulnerability has been resolved:
serial: max3100: Lock port->lock when calling uart_handle_cts_change()
uart_handle_cts_change() has to be called with port lock taken,
Since we run it in a separate work, the lock may not be taken at
the time of running. Make sure that it’s taken by explicitly doing
that. Without it we got a splat:
WARNING: CPU: 0 PID: 10 at drivers/tty/serial/serial_core.c:3491 uart_handle_cts_change+0xa6/0xb0
…
Workqueue: max3100-0 max3100_work [max3100]
RIP: 0010:uart_handle_cts_change+0xa6/0xb0
…
max3100_handlerx+0xc5/0x110 [max3100]
max3100_work+0x12a/0x340 [max3100]
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/tty/serial/max3100.c"
],
"versions": [
{
"version": "7831d56b0a35",
"lessThan": "44b38924135d",
"status": "affected",
"versionType": "git"
},
{
"version": "7831d56b0a35",
"lessThan": "ea9b35372b58",
"status": "affected",
"versionType": "git"
},
{
"version": "7831d56b0a35",
"lessThan": "cc121e3722a0",
"status": "affected",
"versionType": "git"
},
{
"version": "7831d56b0a35",
"lessThan": "78dbda51bb42",
"status": "affected",
"versionType": "git"
},
{
"version": "7831d56b0a35",
"lessThan": "8296bb9e5925",
"status": "affected",
"versionType": "git"
},
{
"version": "7831d56b0a35",
"lessThan": "93df2fba6c7d",
"status": "affected",
"versionType": "git"
},
{
"version": "7831d56b0a35",
"lessThan": "865b30c86619",
"status": "affected",
"versionType": "git"
},
{
"version": "7831d56b0a35",
"lessThan": "77ab53371a20",
"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/serial/max3100.c"
],
"versions": [
{
"version": "2.6.30",
"status": "affected"
},
{
"version": "0",
"lessThan": "2.6.30",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.19.316",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.4.278",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.10.219",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.15.161",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.1.93",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.6.33",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.9.4",
"lessThanOrEqual": "6.9.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.10",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]
git.kernel.org/stable/c/44b38924135d2093e2ec1812969464845dd66dc9
git.kernel.org/stable/c/77ab53371a2066fdf9b895246505f5ef5a4b5d47
git.kernel.org/stable/c/78dbda51bb4241b88a52d71620f06231a341f9ba
git.kernel.org/stable/c/8296bb9e5925b6634259c5d4daee88f0cc0884ec
git.kernel.org/stable/c/865b30c8661924ee9145f442bf32cea549faa869
git.kernel.org/stable/c/93df2fba6c7dfa9a2f08546ea9a5ca4728758458
git.kernel.org/stable/c/cc121e3722a0a2c8f716ef991e5425b180a5fb94
git.kernel.org/stable/c/ea9b35372b58ac2931bfc1d5bc25e839d1221e30