CVE-2026-68468: mtd: virt-concat: free duplicate generated name
Greg Kroah-Hartman <[email protected]>
| Newsgroups | org.kernel.vger.linux-cve-announce |
|---|---|
| Message-ID | <2026081504-CVE-2026-68468-5a81@gregkh> |
From: Greg Kroah-Hartman <[email protected]> Description =========== In the Linux kernel, the following vulnerability has been resolved: mtd: virt-concat: free duplicate generated name Every MTD registration runs mtd_virt_concat_create_join(). Once a virtual concat has already been registered, the function builds the same name again and takes the equal-name branch. That branch skips to the next item without freeing the newly allocated string. Free the temporary name before continuing. The Linux kernel CVE team has assigned CVE-2026-68468 to this issue. Affected and fixed versions =========================== Issue introduced in 7.1 with commit 43db6366fc2de02050e66389f5628d3fdc9af10a and fixed in 7.1.5 with commit 0e65079d28e5c461b6813ea5821be4dfff24ff63 Issue introduced in 7.1 with commit 43db6366fc2de02050e66389f5628d3fdc9af10a and fixed in 7.2-rc4 with commit caa0ecbeff4f7fbf70f22bd8ca598918bffb1b78 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-2026-68468 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/mtd/mtd_virt_concat.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/0e65079d28e5c461b6813ea5821be4dfff24ff63 https://git.kernel.org/stable/c/caa0ecbeff4f7fbf70f22bd8ca598918bffb1b78