CVE-2026-64600
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)
xfs: resample the data fork mapping after cycling ILOCK
In the Linux kernel, the following vulnerability has been resolved: xfs: resample the data fork mapping after cycling ILOCK xfs_reflink_fill_{cow_hole,delalloc} are both presented with an inode, a data fork mapping, and a cow fork mapping. Unfortunately, these two helpers cycle the ILOCK to grab a transaction, which means that the mappings are stale as soon as we reacquire the ILOCK. Currently we refresh the cow fork mapping by re-calling xfs_find_trim_cow_extent, but we don't refresh the data fork mapping beforehand, which means that the xfs_bmap_trim_cow in that function queries the refcount btree about the wrong physical blocks and returns an inaccurate value in *shared. If *shared is now false, the directio write proceeds with a stale data fork mapping. Fix this by querying the data fork mapping if the sequence counter changes across the ILOCK cycle.
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) |
|---|---|---|---|---|---|
| 3c68d44a2b49a0ac9165faa9c191e1e618c8a8d5 | affected | git | dc11be133efca5fe3a2fb02b016dee825cc12f18 | Unavailable | None listed |
| 3c68d44a2b49a0ac9165faa9c191e1e618c8a8d5 | affected | git | b8c9aa832b52680ee40d6cab0efb081f9a69df05 | Unavailable | None listed |
| 3c68d44a2b49a0ac9165faa9c191e1e618c8a8d5 | affected | git | 50f0012da1040f69a4e788cd9aed587c9a04983f | Unavailable | None listed |
| 3c68d44a2b49a0ac9165faa9c191e1e618c8a8d5 | affected | git | e705d81a7193dd19e69b8e2bad4696d78a4ea075 | Unavailable | None listed |
| 3c68d44a2b49a0ac9165faa9c191e1e618c8a8d5 | affected | git | 206c09b04dc5469c7ff14d8aceff2d47c88078d9 | Unavailable | None listed |
| 3c68d44a2b49a0ac9165faa9c191e1e618c8a8d5 | affected | git | 44f891bc088958399eec27f7604928694aa35581 | Unavailable | None listed |
| 3c68d44a2b49a0ac9165faa9c191e1e618c8a8d5 | affected | git | 2f4acd0fcd862e22eab45690ec2c08c80b6ef2e7 | 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 |
| 5.15.212 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.178 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.145 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.96 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.39 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.1.4 | unaffected | semver | Unavailable | 7.1.* | None listed |
| 7.2 | unaffected | original_commit_for_fix | Unavailable | * | None listed |