| 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-2024-36020: i40e: fix vf may be used uninitialized in this function warning |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| i40e: fix vf may be used uninitialized in this function warning |
| |
| To fix the regression introduced by commit 52424f974bc5, which causes |
| servers hang in very hard to reproduce conditions with resets races. |
| Using two sources for the information is the root cause. |
| In this function before the fix bumping v didn't mean bumping vf |
| pointer. But the code used this variables interchangeably, so stale vf |
| could point to different/not intended vf. |
| |
| Remove redundant "v" variable and iterate via single VF pointer across |
| whole function instead to guarantee VF pointer validity. |
| |
| The Linux kernel CVE team has assigned CVE-2024-36020 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.19.264 with commit 76ed715836c6994bac29d9638e9314e6e3b08651 and fixed in 4.19.312 with commit cc9cd02dd9e8b7764ea9effb24f4f1dd73d1b23d |
| Issue introduced in 5.4.223 with commit e88c2a1e28c5475065563d66c07ca879a9afbd07 and fixed in 5.4.274 with commit 9dcf0fcb80f6aeb01469e3c957f8d4c97365450a |
| Issue introduced in 5.10.153 with commit 9abae363af5ced6adbf04c14366289540281fb26 and fixed in 5.10.215 with commit b8e82128b44fa40bf99a50b919488ef361e1683c |
| Issue introduced in 5.15.77 with commit c39de3ae5075ea5f78e097cb5720d4e52d5caed9 and fixed in 5.15.154 with commit 951d2748a2a8242853abc3d0c153ce4bf8faad31 |
| Issue introduced in 6.1 with commit 52424f974bc53c26ba3f00300a00e9de9afcd972 and fixed in 6.1.85 with commit 3e89846283f3cf7c7a8e28b342576fd7c561d2ba |
| Issue introduced in 6.1 with commit 52424f974bc53c26ba3f00300a00e9de9afcd972 and fixed in 6.6.26 with commit 0dcf573f997732702917af1563aa2493dc772fc0 |
| Issue introduced in 6.1 with commit 52424f974bc53c26ba3f00300a00e9de9afcd972 and fixed in 6.8.5 with commit 06df7618f591b2dc43c59967e294d7b9fc8675b6 |
| Issue introduced in 6.1 with commit 52424f974bc53c26ba3f00300a00e9de9afcd972 and fixed in 6.9 with commit f37c4eac99c258111d414d31b740437e1925b8e8 |
| Issue introduced in 6.0.7 with commit 02f949747e6fb767b29f7931d4bbf40911684e7a |
| |
| 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-2024-36020 |
| 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/ethernet/intel/i40e/i40e_virtchnl_pf.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/cc9cd02dd9e8b7764ea9effb24f4f1dd73d1b23d |
| https://git.kernel.org/stable/c/9dcf0fcb80f6aeb01469e3c957f8d4c97365450a |
| https://git.kernel.org/stable/c/b8e82128b44fa40bf99a50b919488ef361e1683c |
| https://git.kernel.org/stable/c/951d2748a2a8242853abc3d0c153ce4bf8faad31 |
| https://git.kernel.org/stable/c/3e89846283f3cf7c7a8e28b342576fd7c561d2ba |
| https://git.kernel.org/stable/c/0dcf573f997732702917af1563aa2493dc772fc0 |
| https://git.kernel.org/stable/c/06df7618f591b2dc43c59967e294d7b9fc8675b6 |
| https://git.kernel.org/stable/c/f37c4eac99c258111d414d31b740437e1925b8e8 |
