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Message-ID: <2024102155-CVE-2022-49029-0ffd@gregkh> Date: Mon, 21 Oct 2024 22:07:01 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2022-49029: hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails Description =========== In the Linux kernel, the following vulnerability has been resolved: hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails Smatch report warning as follows: drivers/hwmon/ibmpex.c:509 ibmpex_register_bmc() warn: '&data->list' not removed from list If ibmpex_find_sensors() fails in ibmpex_register_bmc(), data will be freed, but data->list will not be removed from driver_data.bmc_data, then list traversal may cause UAF. Fix by removeing it from driver_data.bmc_data before free(). The Linux kernel CVE team has assigned CVE-2022-49029 to this issue. Affected and fixed versions =========================== Issue introduced in 2.6.24 with commit 57c7c3a0fdea and fixed in 4.9.335 with commit f2a13196ad41 Issue introduced in 2.6.24 with commit 57c7c3a0fdea and fixed in 4.14.301 with commit 798198273bf8 Issue introduced in 2.6.24 with commit 57c7c3a0fdea and fixed in 4.19.268 with commit 24b9633f7db7 Issue introduced in 2.6.24 with commit 57c7c3a0fdea and fixed in 5.4.226 with commit 7b2b67fe1339 Issue introduced in 2.6.24 with commit 57c7c3a0fdea and fixed in 5.10.158 with commit 90907cd4d113 Issue introduced in 2.6.24 with commit 57c7c3a0fdea and fixed in 5.15.82 with commit 45f6e8186374 Issue introduced in 2.6.24 with commit 57c7c3a0fdea and fixed in 6.0.12 with commit e65cfd1f9cd2 Issue introduced in 2.6.24 with commit 57c7c3a0fdea and fixed in 6.1 with commit e2a87785aab0 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-2022-49029 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/hwmon/ibmpex.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/f2a13196ad41c6c2ab058279dffe6c97292e753a https://git.kernel.org/stable/c/798198273bf86673b970b51acdb35e57f42b3fcb https://git.kernel.org/stable/c/24b9633f7db7f4809be7053df1d2e117e7c2de10 https://git.kernel.org/stable/c/7b2b67fe1339389e0bf3c37c7a677a004ac0e4e3 https://git.kernel.org/stable/c/90907cd4d11351ff76c9a447bcb5db0e264c47cd https://git.kernel.org/stable/c/45f6e81863747c0d7bc6a95ec51129900e71467a https://git.kernel.org/stable/c/e65cfd1f9cd27d9c27ee5cb88128a9f79f25d863 https://git.kernel.org/stable/c/e2a87785aab0dac190ac89be6a9ba955e2c634f2
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