Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: net: stmmac: fix TSO DMA API usage causing oops Commit 66600fac7a98 ("net: stmmac: TSO: Fix unbalanced DMA map/unmap for non-paged SKB data") moved the assignment of tx_skbuff_dma[]'s members to be later in stmmac_tso_xmit(). The buf (dma cookie) and len stored in this structure are passed to dma_unmap_single() by stmmac_tx_clean(). The DMA API requires that the dma cookie passed to dma_unmap_single() is the same as the value returned from dma_map_single(). However, by moving the assignment later, this is not the case when priv->dma_cap.addr64 > 32 as "des" is offset by proto_hdr_len. This causes problems such as: dwc-eth-dwmac 2490000.ethernet eth0: Tx DMA map failed and with DMA_API_DEBUG enabled: DMA-API: dwc-eth-dwmac 2490000.ethernet: device driver tries to +free DMA memory it has not allocated [device address=0x000000ffffcf65c0] [size=66 bytes] Fix this by maintaining "des" as the original DMA cookie, and use tso_des to pass the offset DMA cookie to stmmac_tso_allocator(). Full details of the crashes can be found at: https://lore.kernel.org/all/d8112193-0386-4e14-b516-37c2d838171a@nvidia.com/ https://lore.kernel.org/all/klkzp5yn5kq5efgtrow6wbvnc46bcqfxs65nz3qy77ujr5turc@bwwhelz2l4dw/
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected ece593fc9c00741b682869d3f3dc584d37b7c9df before 05968b6dd0ffc65d7386608b11a11fb4fdfc9f36; affected a3ff23f7c3f0e13f718900803e090fd3997d6bc9 before 6abcdc9a73274052a9e96a1926994ecf9aedad82; affected 07c9c26e37542486e34d767505e842f48f29c3f6 before db3667c9bbfbbf5de98e6c9542f7e03fb5243286; affected 66600fac7a984dea4ae095411f644770b2561ede before 9d5dd7ccea1b46a9a7c6b3c2b9e5ed8864e185e2; affected 66600fac7a984dea4ae095411f644770b2561ede before 4c49f38e20a57f8abaebdf95b369295b153d1f8e; affected 58d23d835eb498336716cca55b5714191a309286; affected 5.15.171 before 5.15.209; affected 6.1.116 before 6.1.167; affected 6.6.60 before 6.6.68; affected 6.11.7 before 6.12 |
| Linux / Linux | affected 6.12; unaffected 0 before 6.12; unaffected 5.15.209 through 5.15.*; unaffected 6.1.167 through 6.1.*; unaffected 6.6.68 through 6.6.*; unaffected 6.12.7 through 6.12.*; unaffected 6.13 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/05968b6dd0ffc65d7386608b11a11fb4fdfc9f36
- https://git.kernel.org/stable/c/6abcdc9a73274052a9e96a1926994ecf9aedad82
- https://git.kernel.org/stable/c/db3667c9bbfbbf5de98e6c9542f7e03fb5243286
- https://git.kernel.org/stable/c/9d5dd7ccea1b46a9a7c6b3c2b9e5ed8864e185e2
- https://git.kernel.org/stable/c/4c49f38e20a57f8abaebdf95b369295b153d1f8e
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.