CVE-2026-68473: powerpc/uaccess: correct check for CONFIG_PPC_E500 in mask_user_address()
Greg Kroah-Hartman <[email protected]>
| Newsgroups | org.kernel.vger.linux-cve-announce |
|---|---|
| Message-ID | <2026081505-CVE-2026-68473-9c59@gregkh> |
From: Greg Kroah-Hartman <[email protected]> Description =========== In the Linux kernel, the following vulnerability has been resolved: powerpc/uaccess: correct check for CONFIG_PPC_E500 in mask_user_address() mask_user_address() incorrectly checks for CONFIG_E500 instead of CONFIG_PPC_E500, causing mask_user_address_isel() to not be used on E500 hardware. Fix the check to use the correct name. The Linux kernel CVE team has assigned CVE-2026-68473 to this issue. Affected and fixed versions =========================== Issue introduced in 7.0 with commit 861574d51bbd7a06dbf07f658a9a8def012c2f74 and fixed in 7.1.5 with commit d5c234774a82f27b594f70c15fc45ce3648e4295 Issue introduced in 7.0 with commit 861574d51bbd7a06dbf07f658a9a8def012c2f74 and fixed in 7.2-rc4 with commit d610d3ab18197d87618da11ec5fe8b3cebf32208 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-2026-68473 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: arch/powerpc/include/asm/uaccess.h 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/d5c234774a82f27b594f70c15fc45ce3648e4295 https://git.kernel.org/stable/c/d610d3ab18197d87618da11ec5fe8b3cebf32208