Tracker / CVE-2026-52958
CVE-2026-52958
Critical 9.1
In the Linux kernel, the following vulnerability has been resolved: libceph: Fix potential out-of-bounds access in osdmap_decode() When decoding osd_state and osd_weight from an incoming osdmap in osdmap_decode(), both are decoded for each osd, i.e., map->max_osd times. The ceph_decode_need() check only accounts for sizeof(*map->osd_weight) once. This can potentially result in an out-of-bounds memory access if the incoming message is corrupted such that the max_osd value exceeds the actual content of the osdmap message. This patch fixes the issue by changing the corresponding part in the ceph_decode_need() check to account for map->max_osd*sizeof(*map->osd_weight).
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 5.11 → 5.15.209 |
| linux | linux_kernel · 5.16 → 6.1.175 |
| linux | linux_kernel · 5.3 → 5.10.258 |
| linux | linux_kernel · 6.13 → 6.18.33 |
| linux | linux_kernel · 6.19 → 7.0.10 |
| linux | linux_kernel · 6.2 → 6.6.141 |
| linux | linux_kernel · 6.7 → 6.12.91 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.