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Message-ID: <2024102118-CVE-2024-49894-08a0@gregkh> Date: Mon, 21 Oct 2024 20:01:42 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2024-49894: drm/amd/display: Fix index out of bounds in degamma hardware format translation Description =========== In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix index out of bounds in degamma hardware format translation Fixes index out of bounds issue in `cm_helper_translate_curve_to_degamma_hw_format` function. The issue could occur when the index 'i' exceeds the number of transfer function points (TRANSFER_FUNC_POINTS). The fix adds a check to ensure 'i' is within bounds before accessing the transfer function points. If 'i' is out of bounds the function returns false to indicate an error. Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_cm_common.c:594 cm_helper_translate_curve_to_degamma_hw_format() error: buffer overflow 'output_tf->tf_pts.red' 1025 <= s32max drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_cm_common.c:595 cm_helper_translate_curve_to_degamma_hw_format() error: buffer overflow 'output_tf->tf_pts.green' 1025 <= s32max drivers/gpu/drm/amd/amdgpu/../display/dc/dcn10/dcn10_cm_common.c:596 cm_helper_translate_curve_to_degamma_hw_format() error: buffer overflow 'output_tf->tf_pts.blue' 1025 <= s32max The Linux kernel CVE team has assigned CVE-2024-49894 to this issue. Affected and fixed versions =========================== Fixed in 5.10.227 with commit c130a3c09e37 Fixed in 5.15.168 with commit c6979719012a Fixed in 6.1.113 with commit 2495c8e272d8 Fixed in 6.6.55 with commit 122e3a7a8c7b Fixed in 6.10.14 with commit 2f5da549535b Fixed in 6.11.3 with commit 07078fa5d589 Fixed in 6.12-rc1 with commit b7e99058eb2e 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-2024-49894 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/amd/display/dc/dcn10/dcn10_cm_common.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/c130a3c09e3746c1a09ce26c20d21d449d039b1d https://git.kernel.org/stable/c/c6979719012a90e5b8e3bc31725fbfdd0b9b2b79 https://git.kernel.org/stable/c/2495c8e272d84685403506833a664fad932e453a https://git.kernel.org/stable/c/122e3a7a8c7bcbe3aacddd6103f67f9f36bed473 https://git.kernel.org/stable/c/2f5da549535be8ccd2ab7c9abac8562ad370b181 https://git.kernel.org/stable/c/07078fa5d589a7fbce8f81ea8acf7aa0021ab38e https://git.kernel.org/stable/c/b7e99058eb2e86aabd7a10761e76cae33d22b49f
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