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Message-ID: <2025022608-CVE-2022-49583-d8d5@gregkh> Date: Wed, 26 Feb 2025 03:22:26 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2022-49583: iavf: Fix handling of dummy receive descriptors Description =========== In the Linux kernel, the following vulnerability has been resolved: iavf: Fix handling of dummy receive descriptors Fix memory leak caused by not handling dummy receive descriptor properly. iavf_get_rx_buffer now sets the rx_buffer return value for dummy receive descriptors. Without this patch, when the hardware writes a dummy descriptor, iavf would not free the page allocated for the previous receive buffer. This is an unlikely event but can still happen. [Jesse: massaged commit message] The Linux kernel CVE team has assigned CVE-2022-49583 to this issue. Affected and fixed versions =========================== Issue introduced in 5.3 with commit efa14c3985828da3163f5372137cb64d992b0f79 and fixed in 5.4.208 with commit d88d59faf4e6f9cc4767664206afdb999b10ec77 Issue introduced in 5.3 with commit efa14c3985828da3163f5372137cb64d992b0f79 and fixed in 5.10.134 with commit c6af94324911ef0846af1a5ce5e049ca736db34b Issue introduced in 5.3 with commit efa14c3985828da3163f5372137cb64d992b0f79 and fixed in 5.15.58 with commit 2918419c06088f6709ceb543feb01752779ade4c Issue introduced in 5.3 with commit efa14c3985828da3163f5372137cb64d992b0f79 and fixed in 5.18.15 with commit 6edb818732fc05fda495f5b3a749bd1cee01398b Issue introduced in 5.3 with commit efa14c3985828da3163f5372137cb64d992b0f79 and fixed in 5.19 with commit a9f49e0060301a9bfebeca76739158d0cf91cdf6 Issue introduced in 5.1.20 with commit 2a51e334a0ade539e5b0fcfdbd8b43acb9c7547d Issue introduced in 5.2.3 with commit 833577ecf3451c7306abb48f221d365c2ee4cc1b 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-2022-49583 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/net/ethernet/intel/iavf/iavf_txrx.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/d88d59faf4e6f9cc4767664206afdb999b10ec77 https://git.kernel.org/stable/c/c6af94324911ef0846af1a5ce5e049ca736db34b https://git.kernel.org/stable/c/2918419c06088f6709ceb543feb01752779ade4c https://git.kernel.org/stable/c/6edb818732fc05fda495f5b3a749bd1cee01398b https://git.kernel.org/stable/c/a9f49e0060301a9bfebeca76739158d0cf91cdf6
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