Linux Kernel dpaa2-switch: Incorrect FD free in Rx error path (CVE-2026-98911)
CVE-2026-98911 Published on October 23, 2026
dpaa2-switch: fix the error path in dpaa2_switch_rx()
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.
Products Associated with CVE-2026-98911
stack.watch emails you whenever new vulnerabilities are published in Linux Kernel or Canonical Ubuntu Linux. Just hit a watch button to start following.
Affected Versions
Linux:- Version 613c0a5810b79610db8535c3816b0c149675f8ee and below 791068c962469af0090e1a1ee63657fb9eef40db is affected.
- Version 613c0a5810b79610db8535c3816b0c149675f8ee and below ee54f8d7e642c44cfcc2dcb390b4c50e145d81b8 is affected.
- Version 613c0a5810b79610db8535c3816b0c149675f8ee and below 259ad6093204b999d41e7e6d0ad90ef9a71a44ab is affected.
- Version 613c0a5810b79610db8535c3816b0c149675f8ee and below f4ceb8e3d6d5becb4cda7a7098a8638e18c835a1 is affected.
- Version 613c0a5810b79610db8535c3816b0c149675f8ee and below fa232b4496cb59503ae5108c756cbe10e59b0bc3 is affected.
- Version 613c0a5810b79610db8535c3816b0c149675f8ee and below 74c1c9f5c0c30bbd0c2cf87b6e3507e7ea46c13d is affected.
- Version 5.13 is affected.
- Before 5.13 is unaffected.
- Version 5.15.222, <= 5.15.* is unaffected.
- Version 6.1.189, <= 6.1.* is unaffected.
- Version 6.6.158, <= 6.6.* is unaffected.
- Version 6.12.111, <= 6.12.* is unaffected.
- Version 6.18.53, <= 6.18.* is unaffected.
- Version 7.2, <= * is unaffected.