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Message-ID: <2025041619-CVE-2025-22097-d4f5@gregkh> Date: Wed, 16 Apr 2025 16:13:08 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2025-22097: drm/vkms: Fix use after free and double free on init error Description =========== In the Linux kernel, the following vulnerability has been resolved: drm/vkms: Fix use after free and double free on init error If the driver initialization fails, the vkms_exit() function might access an uninitialized or freed default_config pointer and it might double free it. Fix both possible errors by initializing default_config only when the driver initialization succeeded. The Linux kernel CVE team has assigned CVE-2025-22097 to this issue. Affected and fixed versions =========================== Issue introduced in 5.12 with commit 2df7af93fdadb9ba8226fe443fae15ecdefda2a6 and fixed in 5.15.180 with commit 49a69f67f53518bdd9b7eeebf019a2da6cc0e954 Issue introduced in 5.12 with commit 2df7af93fdadb9ba8226fe443fae15ecdefda2a6 and fixed in 6.1.134 with commit 79d138d137b80eeb0a83244d1cff29e64cf91067 Issue introduced in 5.12 with commit 2df7af93fdadb9ba8226fe443fae15ecdefda2a6 and fixed in 6.6.87 with commit 561fc0c5cf41f646f3e9e61784cbc0fc832fb936 Issue introduced in 5.12 with commit 2df7af93fdadb9ba8226fe443fae15ecdefda2a6 and fixed in 6.12.23 with commit d5eb8e347905ab17788a7903fa1d3d06747355f5 Issue introduced in 5.12 with commit 2df7af93fdadb9ba8226fe443fae15ecdefda2a6 and fixed in 6.13.11 with commit b8a18bb53e06d6d3c1fd03d12533d6e333ba8853 Issue introduced in 5.12 with commit 2df7af93fdadb9ba8226fe443fae15ecdefda2a6 and fixed in 6.14.2 with commit 1f68f1cf09d06061eb549726ff8339e064eddebd Issue introduced in 5.12 with commit 2df7af93fdadb9ba8226fe443fae15ecdefda2a6 and fixed in 6.15-rc1 with commit ed15511a773df86205bda66c37193569575ae828 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-2025-22097 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/vkms/vkms_drv.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/49a69f67f53518bdd9b7eeebf019a2da6cc0e954 https://git.kernel.org/stable/c/79d138d137b80eeb0a83244d1cff29e64cf91067 https://git.kernel.org/stable/c/561fc0c5cf41f646f3e9e61784cbc0fc832fb936 https://git.kernel.org/stable/c/d5eb8e347905ab17788a7903fa1d3d06747355f5 https://git.kernel.org/stable/c/b8a18bb53e06d6d3c1fd03d12533d6e333ba8853 https://git.kernel.org/stable/c/1f68f1cf09d06061eb549726ff8339e064eddebd https://git.kernel.org/stable/c/ed15511a773df86205bda66c37193569575ae828
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