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Message-ID: <2024052454-CVE-2021-47571-05b5@gregkh> Date: Fri, 24 May 2024 17:13:03 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2021-47571: staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect() Description =========== In the Linux kernel, the following vulnerability has been resolved: staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect() The free_rtllib() function frees the "dev" pointer so there is use after free on the next line. Re-arrange things to avoid that. The Linux kernel CVE team has assigned CVE-2021-47571 to this issue. Affected and fixed versions =========================== Issue introduced in 3.2 with commit 66898177e7e5 and fixed in 4.4.294 with commit d43aecb694b1 Issue introduced in 3.2 with commit 66898177e7e5 and fixed in 4.9.292 with commit 918668038293 Issue introduced in 3.2 with commit 66898177e7e5 and fixed in 4.14.257 with commit c0ef0e75a858 Issue introduced in 3.2 with commit 66898177e7e5 and fixed in 4.19.219 with commit bca19bb2dc2d Issue introduced in 3.2 with commit 66898177e7e5 and fixed in 5.4.163 with commit 2e1ec01af2c7 Issue introduced in 3.2 with commit 66898177e7e5 and fixed in 5.10.83 with commit 8d0163cec7de Issue introduced in 3.2 with commit 66898177e7e5 and fixed in 5.15.6 with commit e27ee2f607fe Issue introduced in 3.2 with commit 66898177e7e5 and fixed in 5.16 with commit b535917c51ac 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-2021-47571 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/staging/rtl8192e/rtl8192e/rtl_core.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/d43aecb694b10db9a4228ce2d38b5ae8de374443 https://git.kernel.org/stable/c/9186680382934b0e7529d3d70dcc0a21d087683b https://git.kernel.org/stable/c/c0ef0e75a858cbd8618b473f22fbca36106dcf82 https://git.kernel.org/stable/c/bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13ef https://git.kernel.org/stable/c/2e1ec01af2c7139c6a600bbfaea1a018b35094b6 https://git.kernel.org/stable/c/8d0163cec7de995f9eb9c3128c83fb84f0cb1c64 https://git.kernel.org/stable/c/e27ee2f607fe6a9b923ef1fc65461c0613c97594 https://git.kernel.org/stable/c/b535917c51acc97fb0761b1edec85f1f3d02bda4
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