| 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-2024-49852: scsi: elx: libefc: Fix potential use after free in efc_nport_vport_del() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| scsi: elx: libefc: Fix potential use after free in efc_nport_vport_del() |
| |
| The kref_put() function will call nport->release if the refcount drops to |
| zero. The nport->release release function is _efc_nport_free() which frees |
| "nport". But then we dereference "nport" on the next line which is a use |
| after free. Re-order these lines to avoid the use after free. |
| |
| The Linux kernel CVE team has assigned CVE-2024-49852 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.14 with commit fcd427303eb90aa3cb08e7e0b68e0e67a6d47346 and fixed in 5.15.168 with commit 16a570f07d870a285b0c0b0d1ca4dff79e8aa5ff |
| Issue introduced in 5.14 with commit fcd427303eb90aa3cb08e7e0b68e0e67a6d47346 and fixed in 6.1.113 with commit abc71e89170ed32ecf0a5a29f31aa711e143e941 |
| Issue introduced in 5.14 with commit fcd427303eb90aa3cb08e7e0b68e0e67a6d47346 and fixed in 6.6.54 with commit baeb8628ab7f4577740f00e439d3fdf7c876b0ff |
| Issue introduced in 5.14 with commit fcd427303eb90aa3cb08e7e0b68e0e67a6d47346 and fixed in 6.10.13 with commit 7c2908985e4ae0ea1b526b3916de9e5351650908 |
| Issue introduced in 5.14 with commit fcd427303eb90aa3cb08e7e0b68e0e67a6d47346 and fixed in 6.11.2 with commit 98752fcd076a8cbc978016eae7125b4971be1eec |
| Issue introduced in 5.14 with commit fcd427303eb90aa3cb08e7e0b68e0e67a6d47346 and fixed in 6.12 with commit 2e4b02fad094976763af08fec2c620f4f8edd9ae |
| |
| 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-2024-49852 |
| 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/elx/libefc/efc_nport.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/16a570f07d870a285b0c0b0d1ca4dff79e8aa5ff |
| https://git.kernel.org/stable/c/abc71e89170ed32ecf0a5a29f31aa711e143e941 |
| https://git.kernel.org/stable/c/baeb8628ab7f4577740f00e439d3fdf7c876b0ff |
| https://git.kernel.org/stable/c/7c2908985e4ae0ea1b526b3916de9e5351650908 |
| https://git.kernel.org/stable/c/98752fcd076a8cbc978016eae7125b4971be1eec |
| https://git.kernel.org/stable/c/2e4b02fad094976763af08fec2c620f4f8edd9ae |
