| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-46697: nfsd: ensure that nfsd4_fattr_args.context is zeroed out |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| nfsd: ensure that nfsd4_fattr_args.context is zeroed out |
| |
| If nfsd4_encode_fattr4 ends up doing a "goto out" before we get to |
| checking for the security label, then args.context will be set to |
| uninitialized junk on the stack, which we'll then try to free. |
| Initialize it early. |
| |
| The Linux kernel CVE team has assigned CVE-2024-46697 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.7 with commit f59388a579c6a395de8f7372b267d3abecd8d6bf and fixed in 6.10.8 with commit dd65b324174a64558a16ebbf4c3266e5701185d0 |
| Issue introduced in 6.7 with commit f59388a579c6a395de8f7372b267d3abecd8d6bf and fixed in 6.11 with commit f58bab6fd4063913bd8321e99874b8239e9ba726 |
| |
| 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-2024-46697 |
| 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: |
| fs/nfsd/nfs4xdr.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/dd65b324174a64558a16ebbf4c3266e5701185d0 |
| https://git.kernel.org/stable/c/f58bab6fd4063913bd8321e99874b8239e9ba726 |
