Description
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.
References6
- git.kernel.org/stable/c/259ad6093204b999d41e7e6d0ad90ef9a71a44ab
- git.kernel.org/stable/c/74c1c9f5c0c30bbd0c2cf87b6e3507e7ea46c13d
- git.kernel.org/stable/c/791068c962469af0090e1a1ee63657fb9eef40db
- git.kernel.org/stable/c/ee54f8d7e642c44cfcc2dcb390b4c50e145d81b8
- git.kernel.org/stable/c/f4ceb8e3d6d5becb4cda7a7098a8638e18c835a1
- git.kernel.org/stable/c/fa232b4496cb59503ae5108c756cbe10e59b0bc3
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 25 · as of 8 November 2026
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