| 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-2024-27396: net: gtp: Fix Use-After-Free in gtp_dellink |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: gtp: Fix Use-After-Free in gtp_dellink |
| |
| Since call_rcu, which is called in the hlist_for_each_entry_rcu traversal |
| of gtp_dellink, is not part of the RCU read critical section, it |
| is possible that the RCU grace period will pass during the traversal and |
| the key will be free. |
| |
| To prevent this, it should be changed to hlist_for_each_entry_safe. |
| |
| The Linux kernel CVE team has assigned CVE-2024-27396 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.19.93 with commit 043a283d24f40fea4c8a8d06b0e2694c8e372200 and fixed in 4.19.313 with commit 07b20d0a3dc13fb1adff10b60021a4924498da58 |
| Issue introduced in 5.4.8 with commit c185e1d6e2752a4b656c3ca878c525fa11f55757 and fixed in 5.4.275 with commit 718df1bc226c383dd803397d7f5d95557eb81ac7 |
| Issue introduced in 5.5 with commit 94dc550a5062030569d4aa76e10e50c8fc001930 and fixed in 5.10.216 with commit 0caff3e6390f840666b8dc1ecebf985c2ef3f1dd |
| Issue introduced in 5.5 with commit 94dc550a5062030569d4aa76e10e50c8fc001930 and fixed in 5.15.158 with commit 2e74b3fd6bf542349758f283676dff3660327c07 |
| Issue introduced in 5.5 with commit 94dc550a5062030569d4aa76e10e50c8fc001930 and fixed in 6.1.90 with commit 25a1c2d4b1fcf938356a9688a96a6456abd44b29 |
| Issue introduced in 5.5 with commit 94dc550a5062030569d4aa76e10e50c8fc001930 and fixed in 6.6.30 with commit 2aacd4de45477582993f8a8abb9505a06426bfb6 |
| Issue introduced in 5.5 with commit 94dc550a5062030569d4aa76e10e50c8fc001930 and fixed in 6.8.9 with commit cd957d1716ec979d8f5bf38fc659aeb9fdaa2474 |
| Issue introduced in 5.5 with commit 94dc550a5062030569d4aa76e10e50c8fc001930 and fixed in 6.9 with commit f2a904107ee2b647bb7794a1a82b67740d7c8a64 |
| Issue introduced in 4.14.162 with commit a29c4303930bc0c25ae6a4f365dcdef71447b4ea |
| |
| 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-2024-27396 |
| 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/net/gtp.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/07b20d0a3dc13fb1adff10b60021a4924498da58 |
| https://git.kernel.org/stable/c/718df1bc226c383dd803397d7f5d95557eb81ac7 |
| https://git.kernel.org/stable/c/0caff3e6390f840666b8dc1ecebf985c2ef3f1dd |
| https://git.kernel.org/stable/c/2e74b3fd6bf542349758f283676dff3660327c07 |
| https://git.kernel.org/stable/c/25a1c2d4b1fcf938356a9688a96a6456abd44b29 |
| https://git.kernel.org/stable/c/2aacd4de45477582993f8a8abb9505a06426bfb6 |
| https://git.kernel.org/stable/c/cd957d1716ec979d8f5bf38fc659aeb9fdaa2474 |
| https://git.kernel.org/stable/c/f2a904107ee2b647bb7794a1a82b67740d7c8a64 |
