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Message-ID: <2025070330-CVE-2025-38130-3371@gregkh> Date: Thu, 3 Jul 2025 10:35:47 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2025-38130: drm/connector: only call HDMI audio helper plugged cb if non-null From: Greg Kroah-Hartman <gregkh@...nel.org> Description =========== In the Linux kernel, the following vulnerability has been resolved: drm/connector: only call HDMI audio helper plugged cb if non-null On driver remove, sound/soc/codecs/hdmi-codec.c calls the plugged_cb with NULL as the callback function and codec_dev, as seen in its hdmi_remove function. The HDMI audio helper then happily tries calling said null function pointer, and produces an Oops as a result. Fix this by only executing the callback if fn is non-null. This means the .plugged_cb and .plugged_cb_dev members still get appropriately cleared. The Linux kernel CVE team has assigned CVE-2025-38130 to this issue. Affected and fixed versions =========================== Issue introduced in 6.14 with commit baf616647fe6f857a0cf2187197de31e9bb17a71 and fixed in 6.15.3 with commit 933f3eab1d489af8d734bff855b10d29dd5968a4 Issue introduced in 6.14 with commit baf616647fe6f857a0cf2187197de31e9bb17a71 and fixed in 6.16-rc1 with commit be9b3f9a54101c19226c25ba7163d291183777a0 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2025-38130 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/gpu/drm/display/drm_hdmi_audio_helper.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/933f3eab1d489af8d734bff855b10d29dd5968a4 https://git.kernel.org/stable/c/be9b3f9a54101c19226c25ba7163d291183777a0
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