| 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-2023-52880: tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc |
| |
| Any unprivileged user can attach N_GSM0710 ldisc, but it requires |
| CAP_NET_ADMIN to create a GSM network anyway. |
| |
| Require initial namespace CAP_NET_ADMIN to do that. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52880 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.19.312 with commit 7d303dee473ba3529d75b63491e9963342107bed |
| Fixed in 5.4.274 with commit 7a529c9023a197ab3bf09bb95df32a3813f7ba58 |
| Fixed in 5.10.215 with commit ada28eb4b9561aab93942f3224a2e41d76fe57fa |
| Fixed in 5.15.155 with commit 2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a |
| Fixed in 6.1.86 with commit 2b85977977cbd120591b23c2450e90a5806a7167 |
| Fixed in 6.6 with commit 67c37756898a5a6b2941a13ae7260c89b54e0d88 |
| |
| 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-2023-52880 |
| 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/tty/n_gsm.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/7d303dee473ba3529d75b63491e9963342107bed |
| https://git.kernel.org/stable/c/7a529c9023a197ab3bf09bb95df32a3813f7ba58 |
| https://git.kernel.org/stable/c/ada28eb4b9561aab93942f3224a2e41d76fe57fa |
| https://git.kernel.org/stable/c/2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a |
| https://git.kernel.org/stable/c/2b85977977cbd120591b23c2450e90a5806a7167 |
| https://git.kernel.org/stable/c/67c37756898a5a6b2941a13ae7260c89b54e0d88 |
