| 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-2024-38568: drivers/perf: hisi: hns3: Fix out-of-bound access when valid event group |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drivers/perf: hisi: hns3: Fix out-of-bound access when valid event group |
| |
| The perf tool allows users to create event groups through following |
| cmd [1], but the driver does not check whether the array index is out |
| of bounds when writing data to the event_group array. If the number of |
| events in an event_group is greater than HNS3_PMU_MAX_HW_EVENTS, the |
| memory write overflow of event_group array occurs. |
| |
| Add array index check to fix the possible array out of bounds violation, |
| and return directly when write new events are written to array bounds. |
| |
| There are 9 different events in an event_group. |
| [1] perf stat -e '{pmu/event1/, ... ,pmu/event9/} |
| |
| The Linux kernel CVE team has assigned CVE-2024-38568 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.0 with commit 66637ab137b44914356a9dc7a9b3f8ebcf0b0695 and fixed in 6.1.93 with commit 3669baf308308385a2ab391324abdde5682af5aa |
| Issue introduced in 6.0 with commit 66637ab137b44914356a9dc7a9b3f8ebcf0b0695 and fixed in 6.6.33 with commit be1fa711e59c874d049f592aef1d4685bdd22bdf |
| Issue introduced in 6.0 with commit 66637ab137b44914356a9dc7a9b3f8ebcf0b0695 and fixed in 6.8.12 with commit b5120d322763c15c978bc47beb3b6dff45624304 |
| Issue introduced in 6.0 with commit 66637ab137b44914356a9dc7a9b3f8ebcf0b0695 and fixed in 6.9.3 with commit aa2d3d678895c8eedd003f1473f87d3f06fe6ec7 |
| Issue introduced in 6.0 with commit 66637ab137b44914356a9dc7a9b3f8ebcf0b0695 and fixed in 6.10 with commit 81bdd60a3d1d3b05e6cc6674845afb1694dd3a0e |
| |
| 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-2024-38568 |
| 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/perf/hisilicon/hns3_pmu.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/3669baf308308385a2ab391324abdde5682af5aa |
| https://git.kernel.org/stable/c/be1fa711e59c874d049f592aef1d4685bdd22bdf |
| https://git.kernel.org/stable/c/b5120d322763c15c978bc47beb3b6dff45624304 |
| https://git.kernel.org/stable/c/aa2d3d678895c8eedd003f1473f87d3f06fe6ec7 |
| https://git.kernel.org/stable/c/81bdd60a3d1d3b05e6cc6674845afb1694dd3a0e |
