| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-53206: tcp: Fix use-after-free of nreq in reqsk_timer_handler(). |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| tcp: Fix use-after-free of nreq in reqsk_timer_handler(). |
| |
| The cited commit replaced inet_csk_reqsk_queue_drop_and_put() with |
| __inet_csk_reqsk_queue_drop() and reqsk_put() in reqsk_timer_handler(). |
| |
| Then, oreq should be passed to reqsk_put() instead of req; otherwise |
| use-after-free of nreq could happen when reqsk is migrated but the |
| retry attempt failed (e.g. due to timeout). |
| |
| Let's pass oreq to reqsk_put(). |
| |
| The Linux kernel CVE team has assigned CVE-2024-53206 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.15.170 with commit 8459d61fbf24967839a70235165673148c7c7f17 and fixed in 5.15.174 with commit 2dcc86fefe09ac853158afd96b60d544af115dc5 |
| Issue introduced in 6.1.115 with commit 5071beb59ee416e8ab456ac8647a4dabcda823b1 and fixed in 6.1.120 with commit 9a3c1ad93e6fba67b3a637cfa95a57a6685e4908 |
| Issue introduced in 6.6.59 with commit 997ae8da14f1639ce6fb66a063dab54031cd61b3 and fixed in 6.6.64 with commit 65ed89cad1f57034c256b016e89e8c0a4ec7c65b |
| Issue introduced in 6.11.6 with commit 51e34db64f4e43c7b055ccf881b7f3e0c31bb26d and fixed in 6.11.11 with commit d0eb14cb8c08b00c36a3d5dc57a6f428b301f721 |
| Issue introduced in 6.12 with commit e8c526f2bdf1845bedaf6a478816a3d06fa78b8f and fixed in 6.12.2 with commit 6d845028609a4af0ad66f499ee0bd5789122b067 |
| Issue introduced in 6.12 with commit e8c526f2bdf1845bedaf6a478816a3d06fa78b8f and fixed in 6.13 with commit c31e72d021db2714df03df6c42855a1db592716c |
| Issue introduced in 5.4.293 with commit 106e457953315e476b3642ef24be25ed862aaba3 |
| Issue introduced in 5.10.237 with commit c964bf65f80a14288d767023a1b300b30f5b9cd0 |
| |
| 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-2024-53206 |
| 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/inet_connection_sock.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/2dcc86fefe09ac853158afd96b60d544af115dc5 |
| https://git.kernel.org/stable/c/9a3c1ad93e6fba67b3a637cfa95a57a6685e4908 |
| https://git.kernel.org/stable/c/65ed89cad1f57034c256b016e89e8c0a4ec7c65b |
| https://git.kernel.org/stable/c/d0eb14cb8c08b00c36a3d5dc57a6f428b301f721 |
| https://git.kernel.org/stable/c/6d845028609a4af0ad66f499ee0bd5789122b067 |
| https://git.kernel.org/stable/c/c31e72d021db2714df03df6c42855a1db592716c |
