Yüksek CVSS 7.8 PoC var
CVE-2026-64600: Linux Kernel: yarış durumu
Açıklama (NVD)
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.
Özet bilgiler
- Ürün
- Linux Linux Kernel
- CVSS v3.1
- 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- %0,47 (yüzdelik 41)
- CWE
- CWE-362
- Yama
- Mevcut
Etkilenen sürümler
| Ürün | Başlangıç | Bitiş | Düzeltildi |
|---|---|---|---|
| linux-linux-kernel | 4.11 | — | 5.15.212 |
| linux-linux-kernel | 5.16 | — | 6.1.178 |
| linux-linux-kernel | 6.2 | — | 6.6.145 |
| linux-linux-kernel | 6.7 | — | 6.12.96 |
| linux-linux-kernel | 6.13 | — | 6.18.39 |
| linux-linux-kernel | 6.19 | — | 7.1.4 |
| linux-linux-kernel | 7.2 | 7.2 | — |
| linux-linux-kernel | 7.2 | 7.2 | — |
| linux-linux-kernel | 7.2 | 7.2 | — |