Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: fix the error path in dpaa2_switch_rx() In case of an error in dpaa2_switch_rx(), the dpaa2_switch_free_fd() function is called in order to free the FD. This is incorrect since the dpaa2_switch_free_fd() is intended to be used on Tx frame descriptors, meaning that it expects in the software annotation area of the FD data to find a valid skb pointer on which to call dev_kfree_skb(). Fix this by extracting the dma_unmap_page() from dpaa2_switch_build_linear_skb() directly into the dpaa2_switch_rx() function. This allows us to directly use free_pages() in case of an error before an SKB was created and kfree_skb() afterwards.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 791068c962469af0090e1a1ee63657fb9eef40db; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before ee54f8d7e642c44cfcc2dcb390b4c50e145d81b8; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 259ad6093204b999d41e7e6d0ad90ef9a71a44ab; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before f4ceb8e3d6d5becb4cda7a7098a8638e18c835a1; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before fa232b4496cb59503ae5108c756cbe10e59b0bc3; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 74c1c9f5c0c30bbd0c2cf87b6e3507e7ea46c13d; affected 0 before 5.15.222; affected 0 before 6.1.189; affected 0 before 6.6.158; affected 0 before 6.12.111; affected 0 before 6.18.53 |
| Linux / Linux | unaffected 5.15.222 through 5.15.*; unaffected 6.1.189 through 6.1.*; unaffected 6.6.158 through 6.6.*; unaffected 6.12.111 through 6.12.*; unaffected 6.18.53 through 6.18.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/791068c962469af0090e1a1ee63657fb9eef40db
- https://git.kernel.org/stable/c/ee54f8d7e642c44cfcc2dcb390b4c50e145d81b8
- https://git.kernel.org/stable/c/259ad6093204b999d41e7e6d0ad90ef9a71a44ab
- https://git.kernel.org/stable/c/f4ceb8e3d6d5becb4cda7a7098a8638e18c835a1
- https://git.kernel.org/stable/c/fa232b4496cb59503ae5108c756cbe10e59b0bc3
- https://git.kernel.org/stable/c/74c1c9f5c0c30bbd0c2cf87b6e3507e7ea46c13d