| From bippy-1.2.0 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-2022-49114: scsi: libfc: Fix use after free in fc_exch_abts_resp() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| scsi: libfc: Fix use after free in fc_exch_abts_resp() |
| |
| fc_exch_release(ep) will decrease the ep's reference count. When the |
| reference count reaches zero, it is freed. But ep is still used in the |
| following code, which will lead to a use after free. |
| |
| Return after the fc_exch_release() call to avoid use after free. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49114 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.29 with commit 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and fixed in 4.9.311 with commit 4a131d4ea8b581ac9b01d3a72754db4848be3232 |
| Issue introduced in 2.6.29 with commit 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and fixed in 4.14.276 with commit 499d198494e77b6533251b9b909baf5c101129cb |
| Issue introduced in 2.6.29 with commit 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and fixed in 4.19.238 with commit 6044ad64f41c87382cfeeca281573d1886d80cbe |
| Issue introduced in 2.6.29 with commit 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and fixed in 5.4.189 with commit 5cf2ce8967b0d98c8cfa4dc42ef4fcf080f5c836 |
| Issue introduced in 2.6.29 with commit 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and fixed in 5.10.111 with commit 1d7effe5fff9d28e45e18ac3a564067c7ddfe898 |
| Issue introduced in 2.6.29 with commit 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and fixed in 5.15.34 with commit f581df412bc45c95176e3c808ee2839c05b2ab0c |
| Issue introduced in 2.6.29 with commit 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and fixed in 5.16.20 with commit 87909291762d08fdb60d19069d7a89b5b308d0ef |
| Issue introduced in 2.6.29 with commit 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and fixed in 5.17.3 with commit 412dd8299b02e4410fe77b8396953c1a8dde183a |
| Issue introduced in 2.6.29 with commit 42e9a92fe6a9095bd68a379aaec7ad2be0337f7a and fixed in 5.18 with commit 271add11994ba1a334859069367e04d2be2ebdd4 |
| |
| 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-2022-49114 |
| 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/scsi/libfc/fc_exch.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/4a131d4ea8b581ac9b01d3a72754db4848be3232 |
| https://git.kernel.org/stable/c/499d198494e77b6533251b9b909baf5c101129cb |
| https://git.kernel.org/stable/c/6044ad64f41c87382cfeeca281573d1886d80cbe |
| https://git.kernel.org/stable/c/5cf2ce8967b0d98c8cfa4dc42ef4fcf080f5c836 |
| https://git.kernel.org/stable/c/1d7effe5fff9d28e45e18ac3a564067c7ddfe898 |
| https://git.kernel.org/stable/c/f581df412bc45c95176e3c808ee2839c05b2ab0c |
| https://git.kernel.org/stable/c/87909291762d08fdb60d19069d7a89b5b308d0ef |
| https://git.kernel.org/stable/c/412dd8299b02e4410fe77b8396953c1a8dde183a |
| https://git.kernel.org/stable/c/271add11994ba1a334859069367e04d2be2ebdd4 |
