CVE-2023-53501
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)
iommu/amd/iommu_v2: Fix pasid_state refcount dec hit 0 warning on pasid unbind
In the Linux kernel, the following vulnerability has been resolved: iommu/amd/iommu_v2: Fix pasid_state refcount dec hit 0 warning on pasid unbind When unbinding pasid - a race condition exists vs outstanding page faults. To prevent this, the pasid_state object contains a refcount. * set to 1 on pasid bind * incremented on each ppr notification start * decremented on each ppr notification done * decremented on pasid unbind Since refcount_dec assumes that refcount will never reach 0: the current implementation causes the following to be invoked on pasid unbind: REFCOUNT_WARN("decrement hit 0; leaking memory") Fix this issue by changing refcount_dec to refcount_dec_and_test to explicitly handle refcount=1.
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) |
|---|---|---|---|---|---|
| 8bc54824da4e8fcf0ed679cf09ac32f23d83254a | affected | git | a50d60b8f2aff46dd7c7edb4a5835cdc4d432c22 | Unavailable | None listed |
| 8bc54824da4e8fcf0ed679cf09ac32f23d83254a | affected | git | 13ed255248dfbbb7f23f9170c7a537fb9ca22c73 | Unavailable | None listed |
| 8bc54824da4e8fcf0ed679cf09ac32f23d83254a | affected | git | 9ccc51be3126b25cfe9351dbffde946c925cc28a | Unavailable | None listed |
| 8bc54824da4e8fcf0ed679cf09ac32f23d83254a | affected | git | 98d86bf32187db27946ca817c2467a5f2f7aa02f | Unavailable | None listed |
| 8bc54824da4e8fcf0ed679cf09ac32f23d83254a | affected | git | 534103bcd52ca9c1fecbc70e717b4a538dc4ded8 | 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) |
|---|---|---|---|---|---|
| 5.15 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.15 | Unavailable | None listed |
| 5.15.132 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.53 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.4.16 | unaffected | semver | Unavailable | 6.4.* | None listed |
| 6.5.3 | unaffected | semver | Unavailable | 6.5.* | None listed |
| 6.6 | unaffected | original_commit_for_fix | Unavailable | * | None listed |