CVE-2023-53446
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free
In the Linux kernel, the following vulnerability has been resolved: PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free Struct pcie_link_state->downstream is a pointer to the pci_dev of function 0. Previously we retained that pointer when removing function 0, and subsequent ASPM policy changes dereferenced it, resulting in a use-after-free warning from KASAN, e.g.: # echo 1 > /sys/bus/pci/devices/0000:03:00.0/remove # echo powersave > /sys/module/pcie_aspm/parameters/policy BUG: KASAN: slab-use-after-free in pcie_config_aspm_link+0x42d/0x500 Call Trace: kasan_report+0xae/0xe0 pcie_config_aspm_link+0x42d/0x500 pcie_aspm_set_policy+0x8e/0x1a0 param_attr_store+0x162/0x2c0 module_attr_store+0x3e/0x80 PCIe spec r6.0, sec 7.5.3.7, recommends that software program the same ASPM Control value in all functions of multi-function devices. Disable ASPM and free the pcie_link_state when any child function is removed so we can discard the dangling pcie_link_state->downstream pointer and maintain the same ASPM Control configuration for all functions. [bhelgaas: commit log and comment]
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 | affected | git | 666e7f9d60cee23077ea3e6331f6f8a19f7ea03f | Unavailable | None listed |
| b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 | affected | git | 7badf4d6f49a358a01ab072bbff88d3ee886c33b | Unavailable | None listed |
| b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 | affected | git | 9856c0de49052174ab474113f4ba40c02aaee086 | Unavailable | None listed |
| b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 | affected | git | 7aecdd47910c51707696e8b0e045b9f88bd4230f | Unavailable | None listed |
| b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 | affected | git | d51d2eeae4ce54d542909c4d9d07bf371a78592c | Unavailable | None listed |
| b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 | affected | git | 4203722d51afe3d239e03f15cc73efdf023a7103 | Unavailable | None listed |
| b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 | affected | git | 456d8aa37d0f56fc9e985e812496e861dcd6f2f2 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.11 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.11 | Unavailable | None listed |
| 5.4.251 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.188 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.121 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.39 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.3.13 | unaffected | semver | Unavailable | 6.3.* | None listed |
| 6.4.4 | unaffected | semver | Unavailable | 6.4.* | None listed |
| 6.5 | unaffected | original_commit_for_fix | Unavailable | * | None listed |