| 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-2023-52997: ipv4: prevent potential spectre v1 gadget in ip_metrics_convert() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ipv4: prevent potential spectre v1 gadget in ip_metrics_convert() |
| |
| if (!type) |
| continue; |
| if (type > RTAX_MAX) |
| return -EINVAL; |
| ... |
| metrics[type - 1] = val; |
| |
| @type being used as an array index, we need to prevent |
| cpu speculation or risk leaking kernel memory content. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52997 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.3 with commit 6cf9dfd3bd62edfff69f11c0f111bc261166e4c7 and fixed in 4.19.272 with commit ef050cf5fb70d995a0d03244e25179b7c66a924a |
| Issue introduced in 4.3 with commit 6cf9dfd3bd62edfff69f11c0f111bc261166e4c7 and fixed in 5.4.231 with commit 746db9ec1e672eee13965625ddac0d97e16fa20c |
| Issue introduced in 4.3 with commit 6cf9dfd3bd62edfff69f11c0f111bc261166e4c7 and fixed in 5.10.166 with commit 34c6142f0df9cd75cba5a7aa9df0960d2854b415 |
| Issue introduced in 4.3 with commit 6cf9dfd3bd62edfff69f11c0f111bc261166e4c7 and fixed in 5.15.91 with commit d50e7348b44f1e046121ff5be01b7fb6978a1149 |
| Issue introduced in 4.3 with commit 6cf9dfd3bd62edfff69f11c0f111bc261166e4c7 and fixed in 6.1.9 with commit 6850fe301d015a7d2012d1de8caf43dafb7cc2f6 |
| Issue introduced in 4.3 with commit 6cf9dfd3bd62edfff69f11c0f111bc261166e4c7 and fixed in 6.2 with commit 1d1d63b612801b3f0a39b7d4467cad0abd60e5c8 |
| |
| 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-2023-52997 |
| 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: |
| net/ipv4/metrics.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/ef050cf5fb70d995a0d03244e25179b7c66a924a |
| https://git.kernel.org/stable/c/746db9ec1e672eee13965625ddac0d97e16fa20c |
| https://git.kernel.org/stable/c/34c6142f0df9cd75cba5a7aa9df0960d2854b415 |
| https://git.kernel.org/stable/c/d50e7348b44f1e046121ff5be01b7fb6978a1149 |
| https://git.kernel.org/stable/c/6850fe301d015a7d2012d1de8caf43dafb7cc2f6 |
| https://git.kernel.org/stable/c/1d1d63b612801b3f0a39b7d4467cad0abd60e5c8 |
