| 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-2021-47609: firmware: arm_scpi: Fix string overflow in SCPI genpd driver |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| firmware: arm_scpi: Fix string overflow in SCPI genpd driver |
| |
| Without the bound checks for scpi_pd->name, it could result in the buffer |
| overflow when copying the SCPI device name from the corresponding device |
| tree node as the name string is set at maximum size of 30. |
| |
| Let us fix it by using devm_kasprintf so that the string buffer is |
| allocated dynamically. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47609 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.8 with commit 8bec4337ad4023b26de35d3b0c3a3b2735ffc5c7 and fixed in 4.9.294 with commit 639901b9429a3195e0fead981ed74b51f5f31538 |
| Issue introduced in 4.8 with commit 8bec4337ad4023b26de35d3b0c3a3b2735ffc5c7 and fixed in 4.14.259 with commit 4694b1ec425a2d20d6f8ca3db594829fdf5f2672 |
| Issue introduced in 4.8 with commit 8bec4337ad4023b26de35d3b0c3a3b2735ffc5c7 and fixed in 4.19.222 with commit 7e8645ca2c0046f7cd2f0f7d569fc036c8abaedb |
| Issue introduced in 4.8 with commit 8bec4337ad4023b26de35d3b0c3a3b2735ffc5c7 and fixed in 5.4.168 with commit 802a1a8501563714a5fe8824f4ed27fec04a0719 |
| Issue introduced in 4.8 with commit 8bec4337ad4023b26de35d3b0c3a3b2735ffc5c7 and fixed in 5.10.88 with commit f0f484714f35d24ffa0ecb4afe3df1c5b225411d |
| Issue introduced in 4.8 with commit 8bec4337ad4023b26de35d3b0c3a3b2735ffc5c7 and fixed in 5.15.11 with commit 976389cbb16cee46847e5d06250a3a0b5506781e |
| Issue introduced in 4.8 with commit 8bec4337ad4023b26de35d3b0c3a3b2735ffc5c7 and fixed in 5.16 with commit 865ed67ab955428b9aa771d8b4f1e4fb7fd08945 |
| |
| 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-2021-47609 |
| 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/firmware/scpi_pm_domain.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/639901b9429a3195e0fead981ed74b51f5f31538 |
| https://git.kernel.org/stable/c/4694b1ec425a2d20d6f8ca3db594829fdf5f2672 |
| https://git.kernel.org/stable/c/7e8645ca2c0046f7cd2f0f7d569fc036c8abaedb |
| https://git.kernel.org/stable/c/802a1a8501563714a5fe8824f4ed27fec04a0719 |
| https://git.kernel.org/stable/c/f0f484714f35d24ffa0ecb4afe3df1c5b225411d |
| https://git.kernel.org/stable/c/976389cbb16cee46847e5d06250a3a0b5506781e |
| https://git.kernel.org/stable/c/865ed67ab955428b9aa771d8b4f1e4fb7fd08945 |
