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Message-ID: <2024051738-CVE-2024-35848-fc2b@gregkh> Date: Fri, 17 May 2024 16:47:41 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2024-35848: eeprom: at24: fix memory corruption race condition Description =========== In the Linux kernel, the following vulnerability has been resolved: eeprom: at24: fix memory corruption race condition If the eeprom is not accessible, an nvmem device will be registered, the read will fail, and the device will be torn down. If another driver accesses the nvmem device after the teardown, it will reference invalid memory. Move the failure point before registering the nvmem device. The Linux kernel CVE team has assigned CVE-2024-35848 to this issue. Affected and fixed versions =========================== Issue introduced in 5.3 with commit b20eb4c1f026 and fixed in 5.10.217 with commit c850f71fca09 Issue introduced in 5.3 with commit b20eb4c1f026 and fixed in 5.15.159 with commit 26d32bec4c6d Issue introduced in 5.3 with commit b20eb4c1f026 and fixed in 6.1.91 with commit c43e5028f5a3 Issue introduced in 5.3 with commit b20eb4c1f026 and fixed in 6.6.31 with commit 2af84c46b9b8 Issue introduced in 5.3 with commit b20eb4c1f026 and fixed in 6.8.9 with commit 6d8b56ec0c8f Issue introduced in 5.3 with commit b20eb4c1f026 and fixed in 6.9 with commit f42c97027fb7 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-2024-35848 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/misc/eeprom/at24.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/c850f71fca09ea41800ed55905980063d17e01da https://git.kernel.org/stable/c/26d32bec4c6d255a03762f33c637bfa3718be15a https://git.kernel.org/stable/c/c43e5028f5a35331eb25017f5ff6cc21735005c6 https://git.kernel.org/stable/c/2af84c46b9b8f2d6c0f88d09ee5c849ae1734676 https://git.kernel.org/stable/c/6d8b56ec0c8f30d5657382f47344a32569f7a9bc https://git.kernel.org/stable/c/f42c97027fb75776e2e9358d16bf4a99aeb04cf2
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