Description
In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset() bnxt_rx_ring_reset() frees the ring buffers and then reallocates them, ignoring the result. bnxt_alloc_one_rx_ring() can fail in bnxt_alloc_one_tpa_info_data(), which returns -ENOMEM on the first failed allocation and leaves the remaining rxr->rx_tpa[] entries zeroed. The error isn't propagated up, so the loop in bnxt_rx_ring_reset continues and at the end the code re-enables TPA with partially unallocated rx_tpa array. This means that when the agg_id from hardware is mapped to a SW index in rxr->rx_tpa[], an uninitialized slot can be chosen which would hand a zero DMA address to the device. Fix this by falling back to a global reset, which is what the existing code already does when other functions fail, but unlike the other failure cases this particular failure has to return because TPA can't be re-enabled since the allocation failed.
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
8fbf58e17dce8f250dda9ad6b0a49b3041f0af14 to < 52fc97cbc3ba118aad84e7c001bf02ebe8496f70affected8fbf58e17dce8f250dda9ad6b0a49b3041f0af14 to < 40b4a7bb6b0b872b45f017dbf211268de098b75caffected8fbf58e17dce8f250dda9ad6b0a49b3041f0af14 to < af9a2bdaba0b4ceb0fc5e5122ef3fc6b7e5a366aaffected8fbf58e17dce8f250dda9ad6b0a49b3041f0af14 to < cfec9e7f15a56cb0104bac13d01e5d11e1ba84fbaffected8fbf58e17dce8f250dda9ad6b0a49b3041f0af14 to < 1a3670b6a6b5679fe56c5890157b344f091e64f8affected8fbf58e17dce8f250dda9ad6b0a49b3041f0af14 to < 4a17c73c83798c2fa9c7920ad5a98803adce3e01affected8fbf58e17dce8f250dda9ad6b0a49b3041f0af14 to < 8b2fd5c0aeda935294159206af9d6179282d425aaffected8fbf58e17dce8f250dda9ad6b0a49b3041f0af14 to < 961e2a17c5e3559b3f8654d2daabdd25a42e770aaffected
Linux Linux
Default version status: affected
5.10affected0 to < 5.10unaffected5.10.271 to ≤ 5.10.*unaffected5.15.222 to ≤ 5.15.*unaffected6.1.189 to ≤ 6.1.*unaffected6.6.158 to ≤ 6.6.*unaffected6.12.111 to ≤ 6.12.*unaffected6.18.53 to ≤ 6.18.*unaffected7.2.7 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/52fc97cbc3ba118aad84e7c001bf02ebe8496f70 ↗
- https://git.kernel.org/stable/c/40b4a7bb6b0b872b45f017dbf211268de098b75c ↗
- https://git.kernel.org/stable/c/af9a2bdaba0b4ceb0fc5e5122ef3fc6b7e5a366a ↗
- https://git.kernel.org/stable/c/cfec9e7f15a56cb0104bac13d01e5d11e1ba84fb ↗
- https://git.kernel.org/stable/c/1a3670b6a6b5679fe56c5890157b344f091e64f8 ↗
- https://git.kernel.org/stable/c/4a17c73c83798c2fa9c7920ad5a98803adce3e01 ↗
- https://git.kernel.org/stable/c/8b2fd5c0aeda935294159206af9d6179282d425a ↗
- https://git.kernel.org/stable/c/961e2a17c5e3559b3f8654d2daabdd25a42e770a ↗