CVE-2026-80959
N/A
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
dm-pcache: bound the persisted tail-position offset
cache_pos_decode() takes the persisted key_tail and dirty_tail seg_off from the cache device and addresses within the segment with it. A seg_off at or past the segment data_size, controllable by whoever supplies the device (CAP_SYS_ADMIN), reads past the segment data.
Reject a decoded seg_off that is not below the segment data_size.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 < ffd9a214a94f9928e54856f42b1cc3e33fb10e36 | affected |
| Linux | Linux | 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 < 8bf7a06ca3c1611809725f58cfd573f2ffbda75f | affected |
| Linux | Linux | 1d57628ff95b32d5cfa8d8f50e07690c161e9cf0 < d1898576090a10d2ac2715218a652e78fb65a6b0 | affected |
| Linux | Linux | 6.18 | affected |
| Linux | Linux | 0 < 6.18 | unaffected |
| Linux | Linux | 6.18.50 <= 6.18.* | unaffected |
| Linux | Linux | 7.2.4 <= 7.2.* | unaffected |
| Linux | Linux | 7.3-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/ffd9a214a94f9928e54856f42b1cc3e33fb10e36
- https://git.kernel.org/stable/c/8bf7a06ca3c1611809725f58cfd573f2ffbda75f
- https://git.kernel.org/stable/c/d1898576090a10d2ac2715218a652e78fb65a6b0
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