CVE-2023-52473
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-52473
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52473.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2023-52473
- Downstream
- Related
- Published
- 2024-02-25T08:16:35Z
- Modified
- 2025-10-08T15:19:03.577972Z
- Summary
- thermal: core: Fix NULL pointer dereference in zone registration error path
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
thermal: core: Fix NULL pointer dereference in zone registration error path
If deviceregister() in thermalzonedeviceregisterwithtrips() returns an error, the tz variable is set to NULL and subsequently dereferenced in kfree(tz->tzp).
Commit adc8749b150c ("thermal/drivers/core: Use putdevice() if deviceregister() fails") added the tz = NULL assignment in question to avoid a possible double-free after dropping the reference to the zone device. However, after commit 4649620d9404 ("thermal: core: Make thermalzonedevice_unregister() return after freeing the zone"), that assignment has become redundant, because dropping the reference to the zone device does not cause the zone object to be freed any more.
Drop it to address the NULL pointer dereference.
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced3d439b1a2ad36c8b4ea151c8de25309d60d17407Fixed335176dd8ebaca6493807dceea33c478305667fa
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced3d439b1a2ad36c8b4ea151c8de25309d60d17407Fixed02871710b93058eb1249d5847c0b2d1c2c3c98ae
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced3d439b1a2ad36c8b4ea151c8de25309d60d17407Fixed04e6ccfc93c5a1aa1d75a537cf27e418895e20ea
Affected versions
v6.*
v6.3
v6.3-rc5
v6.3-rc6
v6.3-rc7
v6.4
v6.4-rc1
v6.4-rc2
v6.4-rc3
v6.4-rc4
v6.4-rc5
v6.4-rc6
v6.4-rc7
v6.5
v6.5-rc1
v6.5-rc2
v6.5-rc3
v6.5-rc4
v6.5-rc5
v6.5-rc6
v6.5-rc7
v6.6
v6.6-rc1
v6.6-rc2
v6.6-rc3
v6.6-rc4
v6.6-rc5
v6.6-rc6
v6.6-rc7
v6.6.1
v6.6.10
v6.6.11
v6.6.12
v6.6.13
v6.6.2
v6.6.3
v6.6.4
v6.6.5
v6.6.6
v6.6.7
v6.6.8
v6.6.9
v6.7
v6.7-rc1
v6.7-rc2
v6.7-rc3
v6.7-rc4
v6.7-rc5
v6.7-rc6
v6.7-rc7
v6.7-rc8
v6.7.1
Database specific
{
"vanir_signatures": [
{
"target": {
"file": "drivers/thermal/thermal_core.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@02871710b93058eb1249d5847c0b2d1c2c3c98ae",
"digest": {
"threshold": 0.9,
"line_hashes": [
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]
},
"deprecated": false,
"id": "CVE-2023-52473-21233b60",
"signature_type": "Line",
"signature_version": "v1"
},
{
"target": {
"file": "drivers/thermal/thermal_core.c",
"function": "thermal_zone_device_register_with_trips"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@02871710b93058eb1249d5847c0b2d1c2c3c98ae",
"digest": {
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"function_hash": "118570074636334074315157782127661228749"
},
"deprecated": false,
"id": "CVE-2023-52473-83afa891",
"signature_type": "Function",
"signature_version": "v1"
},
{
"target": {
"file": "drivers/thermal/thermal_core.c",
"function": "thermal_zone_device_register_with_trips"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@335176dd8ebaca6493807dceea33c478305667fa",
"digest": {
"length": 3236.0,
"function_hash": "38843366469495217603008824682753486984"
},
"deprecated": false,
"id": "CVE-2023-52473-d9d0effb",
"signature_type": "Function",
"signature_version": "v1"
},
{
"target": {
"file": "drivers/thermal/thermal_core.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@04e6ccfc93c5a1aa1d75a537cf27e418895e20ea",
"digest": {
"threshold": 0.9,
"line_hashes": [
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]
},
"deprecated": false,
"id": "CVE-2023-52473-e68e1b58",
"signature_type": "Line",
"signature_version": "v1"
},
{
"target": {
"file": "drivers/thermal/thermal_core.c"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@335176dd8ebaca6493807dceea33c478305667fa",
"digest": {
"threshold": 0.9,
"line_hashes": [
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},
"deprecated": false,
"id": "CVE-2023-52473-ee29621b",
"signature_type": "Line",
"signature_version": "v1"
},
{
"target": {
"file": "drivers/thermal/thermal_core.c",
"function": "thermal_zone_device_register_with_trips"
},
"source": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git@04e6ccfc93c5a1aa1d75a537cf27e418895e20ea",
"digest": {
"length": 3193.0,
"function_hash": "33921530792289975887018755695736448261"
},
"deprecated": false,
"id": "CVE-2023-52473-f2f6d838",
"signature_type": "Function",
"signature_version": "v1"
}
]
}