CVE-2026-92521
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
ACPI: PCI: Clear driver_data on all paths that free the acpi_pci_root
In the Linux kernel, the following vulnerability has been resolved: ACPI: PCI: Clear driver_data on all paths that free the acpi_pci_root acpi_pci_root_add() assigns the freshly allocated root to device->driver_data before dmar_device_add() and pci_acpi_scan_root(). Both failure paths reach the end: label where root is kfree()'d, but only the pci_acpi_scan_root() path clears driver_data first. When dmar_device_add() fails during a hot-add, root is freed while device->driver_data still points at it. The ACPI core does not clear driver_data on attach failure, so a later acpi_pci_find_root() call may dereference this dangling pointer. acpi_pci_root_remove() has the same problem: it frees root without clearing device->driver_data, leaving a dangling pointer behind after the root bridge is removed. Move the NULL assignment to the shared end: label so every error path in acpi_pci_root_add() clears driver_data before freeing root, and clear it in acpi_pci_root_remove() as well, so the object is never left reachable through driver_data after being freed.
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) |
|---|---|---|---|---|---|
| db89b4f0dbab837d0f3de2c3e9427a8d5393afa3 | affected | git | 321bb0eb1486a0d575f02e24e3f4170e408c2f51 | Unavailable | None listed |
| db89b4f0dbab837d0f3de2c3e9427a8d5393afa3 | affected | git | 3c1e8a14f9d06c1ed6f3e4bd2d283a62079109e2 | Unavailable | None listed |
| db89b4f0dbab837d0f3de2c3e9427a8d5393afa3 | affected | git | a285fa3780c768dcc51c76768707d099a2cc611d | Unavailable | None listed |
| db89b4f0dbab837d0f3de2c3e9427a8d5393afa3 | affected | git | 6aaf6dbf54fdfae096f3f90a79e9614e46579280 | Unavailable | None listed |
| db89b4f0dbab837d0f3de2c3e9427a8d5393afa3 | affected | git | 70cf773cca30a10b4964c24520a71279c974b899 | Unavailable | None listed |
| db89b4f0dbab837d0f3de2c3e9427a8d5393afa3 | affected | git | 3eee4c21931dc048ce63b86809f04e4e6f0dcad5 | Unavailable | None listed |
| db89b4f0dbab837d0f3de2c3e9427a8d5393afa3 | affected | git | 6e11ac626f9f9fc3a2ed27dfa44ccbe5fb762217 | Unavailable | None listed |
| db89b4f0dbab837d0f3de2c3e9427a8d5393afa3 | affected | git | 8a742141f7ab84975aa758b775567ef4740ef0cf | 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) |
|---|---|---|---|---|---|
| 2.6.28 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.28 | Unavailable | None listed |
| 5.10.270 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.221 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.188 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.157 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.110 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.52 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.2.6 | unaffected | semver | Unavailable | 7.2.* | None listed |
| 7.3 | unaffected | original_commit_for_fix | Unavailable | * | None listed |