| 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-2022-48908: net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe() |
| |
| During driver initialization, the pointer of card info, i.e. the |
| variable 'ci' is required. However, the definition of |
| 'com20020pci_id_table' reveals that this field is empty for some |
| devices, which will cause null pointer dereference when initializing |
| these devices. |
| |
| The following log reveals it: |
| |
| [ 3.973806] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] |
| [ 3.973819] RIP: 0010:com20020pci_probe+0x18d/0x13e0 [com20020_pci] |
| [ 3.975181] Call Trace: |
| [ 3.976208] local_pci_probe+0x13f/0x210 |
| [ 3.977248] pci_device_probe+0x34c/0x6d0 |
| [ 3.977255] ? pci_uevent+0x470/0x470 |
| [ 3.978265] really_probe+0x24c/0x8d0 |
| [ 3.978273] __driver_probe_device+0x1b3/0x280 |
| [ 3.979288] driver_probe_device+0x50/0x370 |
| |
| Fix this by checking whether the 'ci' is a null pointer first. |
| |
| The Linux kernel CVE team has assigned CVE-2022-48908 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.18 with commit 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f and fixed in 4.9.305 with commit 8e3bc7c5bbf87e86e9cd652ca2a9166942d86206 |
| Issue introduced in 3.18 with commit 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f and fixed in 4.14.270 with commit b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049 |
| Issue introduced in 3.18 with commit 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f and fixed in 4.19.233 with commit b838add93e1dd98210482dc433768daaf752bdef |
| Issue introduced in 3.18 with commit 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f and fixed in 5.4.183 with commit e50c589678e50f8d574612e473ca60ef45190896 |
| Issue introduced in 3.18 with commit 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f and fixed in 5.10.104 with commit 5f394102ee27dbf051a4e283390cd8d1759dacea |
| Issue introduced in 3.18 with commit 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f and fixed in 5.15.27 with commit ea372aab54903310756217d81610901a8e66cb7d |
| Issue introduced in 3.18 with commit 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f and fixed in 5.16.13 with commit ca0bdff4249a644f2ca7a49d410d95b8dacf1f72 |
| Issue introduced in 3.18 with commit 8c14f9c70327a6fb75534c4c61d7ea9c82ccf78f and fixed in 5.17 with commit bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d |
| |
| 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-2022-48908 |
| 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/arcnet/com20020-pci.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/8e3bc7c5bbf87e86e9cd652ca2a9166942d86206 |
| https://git.kernel.org/stable/c/b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049 |
| https://git.kernel.org/stable/c/b838add93e1dd98210482dc433768daaf752bdef |
| https://git.kernel.org/stable/c/e50c589678e50f8d574612e473ca60ef45190896 |
| https://git.kernel.org/stable/c/5f394102ee27dbf051a4e283390cd8d1759dacea |
| https://git.kernel.org/stable/c/ea372aab54903310756217d81610901a8e66cb7d |
| https://git.kernel.org/stable/c/ca0bdff4249a644f2ca7a49d410d95b8dacf1f72 |
| https://git.kernel.org/stable/c/bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d |
