Description
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix mempool alloc size Convert the max size to bytes to match the units of the divisor that calculates the worst-case number of PRP entries. The result is used to determine how many PRP Lists are required. The code was previously rounding this to 1 list, but we can require 2 in the worst case. In that scenario, the driver would corrupt memory beyond the size provided by the mempool. While unlikely to occur (you'd need a 4MB in exactly 127 phys segments on a queue that doesn't support SGLs), this memory corruption has been observed by kfence.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
943e942e6266f22babee5efeb00f8f672fbff5bd to < dfb6d54893d544151e7f480bc44cfe7823f5ad23affected943e942e6266f22babee5efeb00f8f672fbff5bd to < 9141144b37f30e3e7fa024bcfa0a13011e546ba9affected943e942e6266f22babee5efeb00f8f672fbff5bd to < e1777b4286e526c58b4ee699344b0ad85aaf83a0affected943e942e6266f22babee5efeb00f8f672fbff5bd to < b1814724e0d7162bdf4799f2d565381bc2251c63affected943e942e6266f22babee5efeb00f8f672fbff5bd to < c89a529e823d51dd23c7ec0c047c7a454a428541affected
Linux Linux
Default version status: affected
4.18affected0 to < 4.18unaffected5.10.163 to ≤ 5.10.*unaffected5.15.87 to ≤ 5.15.*unaffected6.0.17 to ≤ 6.0.*unaffected6.1.3 to ≤ 6.1.*unaffected6.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/dfb6d54893d544151e7f480bc44cfe7823f5ad23 ↗
- https://git.kernel.org/stable/c/9141144b37f30e3e7fa024bcfa0a13011e546ba9 ↗
- https://git.kernel.org/stable/c/e1777b4286e526c58b4ee699344b0ad85aaf83a0 ↗
- https://git.kernel.org/stable/c/b1814724e0d7162bdf4799f2d565381bc2251c63 ↗
- https://git.kernel.org/stable/c/c89a529e823d51dd23c7ec0c047c7a454a428541 ↗