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Description

In the Linux kernel, the following vulnerability has been resolved: tracing: ring-buffer: Fix to check event length before using Check the event length before adding it for accessing next index in rb_read_data_buffer(). Since this function is used for validating possibly broken ring buffers, the length of the event could be broken. In that case, the new event (e + len) can point a wrong address. To avoid invalid memory access at boot, check whether the length of each event is in the possible range before using it.

PUBLISHED Reserved 2026-05-01 | Published 2026-05-06 | Updated 2026-05-06 | Assigner Linux

Product status

Default status
unaffected

5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55 (git) before b4700c089a10f89de3a5149d57f8a58306458982
affected

5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55 (git) before 5026010110a5ad2268d8c23e1e286ab7c736f7ac
affected

5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55 (git) before 9eb80e54494ef1efef8a64bec4ffa672c9cf411e
affected

5f3b6e839f3ceb8d6ef02231ba9b5aca71b8bf55 (git) before 912b0ee248c529a4f45d1e7f568dc1adddbf2a4a
affected

Default status
affected

6.12
affected

Any version before 6.12
unaffected

6.12.75 (semver)
unaffected

6.18.16 (semver)
unaffected

6.19.6 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/b4700c089a10f89de3a5149d57f8a58306458982

git.kernel.org/...c/5026010110a5ad2268d8c23e1e286ab7c736f7ac

git.kernel.org/...c/9eb80e54494ef1efef8a64bec4ffa672c9cf411e

git.kernel.org/...c/912b0ee248c529a4f45d1e7f568dc1adddbf2a4a

cve.org (CVE-2026-43210)

nvd.nist.gov (CVE-2026-43210)

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