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Message-ID: <2025122455-CVE-2022-50760-b793@gregkh> Date: Wed, 24 Dec 2025 14:06:11 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...nel.org> Subject: CVE-2022-50760: drm/amdgpu: Fix PCI device refcount leak in amdgpu_atrm_get_bios() From: Greg Kroah-Hartman <gregkh@...nel.org> Description =========== In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix PCI device refcount leak in amdgpu_atrm_get_bios() As comment of pci_get_class() says, it returns a pci_device with its refcount increased and decreased the refcount for the input parameter @from if it is not NULL. If we break the loop in amdgpu_atrm_get_bios() with 'pdev' not NULL, we need to call pci_dev_put() to decrease the refcount. Add the missing pci_dev_put() to avoid refcount leak. The Linux kernel CVE team has assigned CVE-2022-50760 to this issue. Affected and fixed versions =========================== Issue introduced in 4.2 with commit d38ceaf99ed015f2a0b9af3499791bd3a3daae21 and fixed in 4.9.337 with commit 6611feef35c0c8c4d297b28a7fc6ab3a2c47eca7 Issue introduced in 4.2 with commit d38ceaf99ed015f2a0b9af3499791bd3a3daae21 and fixed in 4.14.303 with commit da7c78ea9e62bb65273d3ff19a3866ec205bfe18 Issue introduced in 4.2 with commit d38ceaf99ed015f2a0b9af3499791bd3a3daae21 and fixed in 4.19.270 with commit 3360125d721c91d697c71201f18f042ff743e936 Issue introduced in 4.2 with commit d38ceaf99ed015f2a0b9af3499791bd3a3daae21 and fixed in 5.4.229 with commit 981024abf5fe605c94d4f906f65d1b3408d628be Issue introduced in 4.2 with commit d38ceaf99ed015f2a0b9af3499791bd3a3daae21 and fixed in 5.10.163 with commit 7c1ddf7c664b5bc91f14b1bdeaa45520ef1760e4 Issue introduced in 4.2 with commit d38ceaf99ed015f2a0b9af3499791bd3a3daae21 and fixed in 5.15.86 with commit 8f2d2badf8ca5e7e7c30d88840b695c8af7286f3 Issue introduced in 4.2 with commit d38ceaf99ed015f2a0b9af3499791bd3a3daae21 and fixed in 6.0.16 with commit 9d4057d0452243917e12eb19f1599c96f2f05b14 Issue introduced in 4.2 with commit d38ceaf99ed015f2a0b9af3499791bd3a3daae21 and fixed in 6.1.2 with commit a8b54ad7106c0604c4adc4933138b3557739bce0 Issue introduced in 4.2 with commit d38ceaf99ed015f2a0b9af3499791bd3a3daae21 and fixed in 6.2 with commit ca54639c7752edf1304d92ff4d0c049d4efc9ba0 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-2022-50760 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/amdgpu/amdgpu_bios.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/6611feef35c0c8c4d297b28a7fc6ab3a2c47eca7 https://git.kernel.org/stable/c/da7c78ea9e62bb65273d3ff19a3866ec205bfe18 https://git.kernel.org/stable/c/3360125d721c91d697c71201f18f042ff743e936 https://git.kernel.org/stable/c/981024abf5fe605c94d4f906f65d1b3408d628be https://git.kernel.org/stable/c/7c1ddf7c664b5bc91f14b1bdeaa45520ef1760e4 https://git.kernel.org/stable/c/8f2d2badf8ca5e7e7c30d88840b695c8af7286f3 https://git.kernel.org/stable/c/9d4057d0452243917e12eb19f1599c96f2f05b14 https://git.kernel.org/stable/c/a8b54ad7106c0604c4adc4933138b3557739bce0 https://git.kernel.org/stable/c/ca54639c7752edf1304d92ff4d0c049d4efc9ba0
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