CVE-2023-54081
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)
xen: speed up grant-table reclaim
In the Linux kernel, the following vulnerability has been resolved: xen: speed up grant-table reclaim When a grant entry is still in use by the remote domain, Linux must put it on a deferred list. Normally, this list is very short, because the PV network and block protocols expect the backend to unmap the grant first. However, Qubes OS's GUI protocol is subject to the constraints of the X Window System, and as such winds up with the frontend unmapping the window first. As a result, the list can grow very large, resulting in a massive memory leak and eventual VM freeze. To partially solve this problem, make the number of entries that the VM will attempt to free at each iteration tunable. The default is still 10, but it can be overridden via a module parameter. This is Cc: stable because (when combined with appropriate userspace changes) it fixes a severe performance and stability problem for Qubes OS users.
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) |
|---|---|---|---|---|---|
| 569ca5b3f94cd0b3295ec5943aa457cf4a4f6a3a | affected | git | cd1a8952ff529adc210e62306849fd6f256608c0 | Unavailable | None listed |
| 569ca5b3f94cd0b3295ec5943aa457cf4a4f6a3a | affected | git | c76d96c555895ac602c1587b001e5cf656abc371 | Unavailable | None listed |
| 569ca5b3f94cd0b3295ec5943aa457cf4a4f6a3a | affected | git | c04e9894846c663f3278a414f34416e6e45bbe68 | 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) |
|---|---|---|---|---|---|
| 3.5 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 3.5 | Unavailable | None listed |
| 6.1.43 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.4.8 | unaffected | semver | Unavailable | 6.4.* | None listed |
| 6.5 | unaffected | original_commit_for_fix | Unavailable | * | None listed |