Description
In the Linux kernel, the following vulnerability has been resolved: net: mana: validate rx_req_idx to prevent out-of-bounds array access In mana_hwc_rx_event_handler(), rx_req_idx is derived from sge->address in DMA-coherent memory. In Confidential VMs (SEV-SNP/TDX), this memory is shared unencrypted and HW can modify WQE contents at any time. No bounds check exists on rx_req_idx, which can lead to an out-of-bounds access into reqs[]. Add bounds check on rx_req_idx in mana_hwc_rx_event_handler() before using it to index the reqs[] array.
Affected products
linux: linux kernel
References7
- git.kernel.org/stable/c/01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01 Patch
- git.kernel.org/stable/c/355e9f2b2a7887ca38100127989af3e422ba71d0 Patch
- git.kernel.org/stable/c/5ddc715324badd7f2641bc177db1d027b402adae Patch
- git.kernel.org/stable/c/763a372d344fb12fae566d36ddb46e92454ad58c Patch
- git.kernel.org/stable/c/b809d0409991b75a6cff846a5ac27c3062953f84 Patch
- git.kernel.org/stable/c/fa627a5eaa83fc0261f44ef3769693b886ca6e27 Patch
- git.kernel.org/stable/c/ff1d5af207bcea857d45fe81505f1bc4b29eaef0 Patch
Metrics
- CVSS 3.1
-
9.3
CRITICAL
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 4 · as of 14 November 2026
- CWE
- CWE-129CWE-125
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.