| 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-2024-35908: tls: get psock ref after taking rxlock to avoid leak |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| tls: get psock ref after taking rxlock to avoid leak |
| |
| At the start of tls_sw_recvmsg, we take a reference on the psock, and |
| then call tls_rx_reader_lock. If that fails, we return directly |
| without releasing the reference. |
| |
| Instead of adding a new label, just take the reference after locking |
| has succeeded, since we don't need it before. |
| |
| The Linux kernel CVE team has assigned CVE-2024-35908 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.0 with commit 4cbc325ed6b4dce4910be06d9d6940a8b919c59b and fixed in 6.1.85 with commit 30fabe50a7ace3e9d57cf7f9288f33ea408491c8 |
| Issue introduced in 6.0 with commit 4cbc325ed6b4dce4910be06d9d6940a8b919c59b and fixed in 6.6.26 with commit f1b7f14130d782433bc98c1e1e41ce6b4d4c3096 |
| Issue introduced in 6.0 with commit 4cbc325ed6b4dce4910be06d9d6940a8b919c59b and fixed in 6.8.5 with commit b565d294e3d5aa809566a4d819835da11997d8b3 |
| Issue introduced in 6.0 with commit 4cbc325ed6b4dce4910be06d9d6940a8b919c59b and fixed in 6.9 with commit 417e91e856099e9b8a42a2520e2255e6afe024be |
| |
| 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-2024-35908 |
| 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/tls/tls_sw.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/30fabe50a7ace3e9d57cf7f9288f33ea408491c8 |
| https://git.kernel.org/stable/c/f1b7f14130d782433bc98c1e1e41ce6b4d4c3096 |
| https://git.kernel.org/stable/c/b565d294e3d5aa809566a4d819835da11997d8b3 |
| https://git.kernel.org/stable/c/417e91e856099e9b8a42a2520e2255e6afe024be |
