| 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-2023-52567: serial: 8250_port: Check IRQ data before use |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| serial: 8250_port: Check IRQ data before use |
| |
| In case the leaf driver wants to use IRQ polling (irq = 0) and |
| IIR register shows that an interrupt happened in the 8250 hardware |
| the IRQ data can be NULL. In such a case we need to skip the wake |
| event as we came to this path from the timer interrupt and quite |
| likely system is already awake. |
| |
| Without this fix we have got an Oops: |
| |
| serial8250: ttyS0 at I/O 0x3f8 (irq = 0, base_baud = 115200) is a 16550A |
| ... |
| BUG: kernel NULL pointer dereference, address: 0000000000000010 |
| RIP: 0010:serial8250_handle_irq+0x7c/0x240 |
| Call Trace: |
| ? serial8250_handle_irq+0x7c/0x240 |
| ? __pfx_serial8250_timeout+0x10/0x10 |
| |
| The Linux kernel CVE team has assigned CVE-2023-52567 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.14.315 with commit edfe57aedff4ecf3606533aabf8ecf7676c3c5d9 and fixed in 4.14.327 with commit ee5732caaffba3a37e753fdb89b4958db9a61847 |
| Issue introduced in 4.19.283 with commit 0bd49a043c7984c93c2a0af41222fb71c3986a4e and fixed in 4.19.296 with commit c334650150c29234b0923476f51573ae1b2f252a |
| Issue introduced in 5.4.243 with commit 572d48361aa0a6e6f16c1470e5407de183493d0c and fixed in 5.4.258 with commit bf3c728e3692cc6d998874f0f27d433117348742 |
| Issue introduced in 5.10.180 with commit d5d628fea5f6181809a9d61b04de6ade53277684 and fixed in 5.10.198 with commit e14afa4450cb7e4cf93e993a765801203d41d014 |
| Issue introduced in 5.15.111 with commit 424cf29296354d7b9c6c038aaa7bb71782100851 and fixed in 5.15.134 with commit 2b837f13a818f96304736453ac53b66a70aaa4f2 |
| Issue introduced in 6.1.28 with commit 727e92fe13e81c6088a88d83e466b2b1b553c4e3 and fixed in 6.1.56 with commit e14f68a48fd445a083ac0750fafcb064df5f18f7 |
| Issue introduced in 6.4 with commit 0ba9e3a13c6adfa99e32b2576d20820ab10ad48a and fixed in 6.5.6 with commit 3345cc5f02f1fb4c4dcb114706f2210d879ab933 |
| Issue introduced in 6.4 with commit 0ba9e3a13c6adfa99e32b2576d20820ab10ad48a and fixed in 6.6 with commit cce7fc8b29961b64fadb1ce398dc5ff32a79643b |
| Issue introduced in 6.2.15 with commit d7c6aa39eb041e2a6a53106104200d11e2acc87f |
| Issue introduced in 6.3.2 with commit f5fd2fd999b364801e9790c6f69f3fe3f40ed60f |
| |
| 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-2023-52567 |
| 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/serial/8250/8250_port.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/ee5732caaffba3a37e753fdb89b4958db9a61847 |
| https://git.kernel.org/stable/c/c334650150c29234b0923476f51573ae1b2f252a |
| https://git.kernel.org/stable/c/bf3c728e3692cc6d998874f0f27d433117348742 |
| https://git.kernel.org/stable/c/e14afa4450cb7e4cf93e993a765801203d41d014 |
| https://git.kernel.org/stable/c/2b837f13a818f96304736453ac53b66a70aaa4f2 |
| https://git.kernel.org/stable/c/e14f68a48fd445a083ac0750fafcb064df5f18f7 |
| https://git.kernel.org/stable/c/3345cc5f02f1fb4c4dcb114706f2210d879ab933 |
| https://git.kernel.org/stable/c/cce7fc8b29961b64fadb1ce398dc5ff32a79643b |
