AI Score
Confidence
Low
EPSS
Percentile
13.0%
SSVC
Exploitation
none
Automatable
no
Technical Impact
total
In the Linux kernel, the following vulnerability has been resolved:
kprobes: Fix possible use-after-free issue on kprobe registration
When unloading a module, its state is changing MODULE_STATE_LIVE ->
MODULE_STATE_GOING -> MODULE_STATE_UNFORMED. Each change will take
a time. is_module_text_address()
and __module_text_address()
works with MODULE_STATE_LIVE and MODULE_STATE_GOING.
If we use is_module_text_address()
and __module_text_address()
separately, there is a chance that the first one is succeeded but the
next one is failed because module->state becomes MODULE_STATE_UNFORMED
between those operations.
In check_kprobe_address_safe()
, if the second __module_text_address()
is failed, that is ignored because it expected a kernel_text address.
But it may have failed simply because module->state has been changed
to MODULE_STATE_UNFORMED. In this case, arm_kprobe() will try to modify
non-exist module text address (use-after-free).
To fix this problem, we should not use separated is_module_text_address()
and __module_text_address()
, but use only __module_text_address()
once and do try_module_get(module)
which is only available with
MODULE_STATE_LIVE.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "1c836bad43f3",
"lessThan": "b5808d400934",
"versionType": "git"
},
{
"status": "affected",
"version": "6a119c1a584a",
"lessThan": "93eb31e7c339",
"versionType": "git"
},
{
"status": "affected",
"version": "2a49b025c36a",
"lessThan": "5062d1f4f07f",
"versionType": "git"
},
{
"status": "affected",
"version": "a1edb85e60fd",
"lessThan": "2df2dd27066c",
"versionType": "git"
},
{
"status": "affected",
"version": "28f6c37a2910",
"lessThan": "62029bc9ff2c",
"versionType": "git"
},
{
"status": "affected",
"version": "28f6c37a2910",
"lessThan": "d15023fb4073",
"versionType": "git"
},
{
"status": "affected",
"version": "28f6c37a2910",
"lessThan": "36b57c7d2f8b",
"versionType": "git"
},
{
"status": "affected",
"version": "28f6c37a2910",
"lessThan": "325f3fb551f8",
"versionType": "git"
}
],
"programFiles": [
"kernel/kprobes.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.0",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "4.19.313",
"versionType": "custom",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.275",
"versionType": "custom",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.216",
"versionType": "custom",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.157",
"versionType": "custom",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.87",
"versionType": "custom",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.28",
"versionType": "custom",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.8.7",
"versionType": "custom",
"lessThanOrEqual": "6.8.*"
},
{
"status": "unaffected",
"version": "6.9",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/kprobes.c"
],
"defaultStatus": "affected"
}
]
[
{
"cpes": [
"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*"
],
"vendor": "linux",
"product": "linux_kernel",
"versions": [
{
"status": "affected",
"version": "1c836bad43f3",
"lessThan": "b5808d400934",
"versionType": "git"
},
{
"status": "affected",
"version": "6a119c1a584a",
"lessThan": "93eb31e7c339",
"versionType": "git"
},
{
"status": "affected",
"version": "2a49b025c36a",
"lessThan": "93eb31e7c339",
"versionType": "git"
},
{
"status": "affected",
"version": "a1edb85e60fd",
"lessThan": "2df2dd27066c",
"versionType": "git"
},
{
"status": "affected",
"version": "28f6c37a2910",
"lessThan": "62029bc9ff2c",
"versionType": "git"
},
{
"status": "affected",
"version": "28f6c37a2910",
"lessThan": "d15023fb4073",
"versionType": "git"
},
{
"status": "affected",
"version": "28f6c37a2910",
"lessThan": "36b57c7d2f8b",
"versionType": "git"
},
{
"status": "affected",
"version": "28f6c37a2910",
"lessThan": "325f3fb551f8",
"versionType": "git"
},
{
"status": "affected",
"version": "6.0"
}
],
"defaultStatus": "unknown"
}
]
git.kernel.org/stable/c/2df2dd27066cdba8041e46a64362325626bdfb2e
git.kernel.org/stable/c/325f3fb551f8cd672dbbfc4cf58b14f9ee3fc9e8
git.kernel.org/stable/c/36b57c7d2f8b7de224980f1a284432846ad71ca0
git.kernel.org/stable/c/5062d1f4f07facbdade0f402d9a04a788f52e26d
git.kernel.org/stable/c/62029bc9ff2c17a4e3a2478d83418ec575413808
git.kernel.org/stable/c/93eb31e7c3399e326259f2caa17be1e821f5a412
git.kernel.org/stable/c/b5808d40093403334d939e2c3c417144d12a6f33
git.kernel.org/stable/c/d15023fb407337028a654237d8968fefdcf87c2f
lists.debian.org/debian-lts-announce/2024/06/msg00017.html
lists.debian.org/debian-lts-announce/2024/06/msg00020.html