In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix 4-byte stack OOB write If priv->len is a multiple of 4, then dst[len / 4] can write past the destination array which leads to stack corruption. This construct is necessary to clean the remainder of the register in case ->len is NOT a multiple of the register size, so make it conditional just like nft_payload.c does. The bug was added in 4.1 cycle and then copied/inherited when tcp/sctp and ip option support was added. Bug reported by Zero Day Initiative project (ZDI-CAN-21950, ZDI-CAN-21951, ZDI-CAN-21961).
| Product | Vendor | Version |
|---|---|---|
| Linux | Linux | Versions prior to 7.0P1 |
| Linux | Linux | , 9.2 |
| Linux | Linux | APQ8009, APQ8098, IPQ6018, Kamorta, MDM9150, MDM9205, MDM9607, MDM9650, MSM8909, MSM8998, Nicobar, QCS404, QCS405, QCS605, Rennell, SA415M, SA6155P, SC7180, SC8180X, SDA660, SDA845, SDM630, SDM636, SDM660, SDM670, SDM710, SDM845, SDM850, SDX24, SDX55, SM6150, SM7150, SM8150, SM8250, SXR1130, SXR2130 |
| Linux | Linux | From version 1.3.0 before version 1.9.12 and from version 2.0.0 before version 2.0.4. |