| 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-2023-52764: media: gspca: cpia1: shift-out-of-bounds in set_flicker |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: gspca: cpia1: shift-out-of-bounds in set_flicker |
| |
| Syzkaller reported the following issue: |
| UBSAN: shift-out-of-bounds in drivers/media/usb/gspca/cpia1.c:1031:27 |
| shift exponent 245 is too large for 32-bit type 'int' |
| |
| When the value of the variable "sd->params.exposure.gain" exceeds the |
| number of bits in an integer, a shift-out-of-bounds error is reported. It |
| is triggered because the variable "currentexp" cannot be left-shifted by |
| more than the number of bits in an integer. In order to avoid invalid |
| range during left-shift, the conditional expression is added. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52764 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.14.331 with commit 69bba62600bd91d6b7c1e8ca181faf8ac64f7060 |
| Fixed in 4.19.300 with commit 2eee8edfff90e22980a6b22079d238c3c9d323bb |
| Fixed in 5.4.262 with commit 8f83c85ee88225319c52680792320c02158c2a9b |
| Fixed in 5.10.202 with commit c6b6b8692218da73b33b310d7c1df90f115bdd9a |
| Fixed in 5.15.140 with commit 09cd8b561aa9796903710a1046957f2b112c8f26 |
| Fixed in 6.1.64 with commit a647f27a7426d2fe1b40da7c8fa2b81354a51177 |
| Fixed in 6.5.13 with commit 93bddd6529f187f510eec759f37d0569243c9809 |
| Fixed in 6.6.3 with commit e2d7149b913d14352c82624e723ce1c211ca06d3 |
| Fixed in 6.7 with commit 099be1822d1f095433f4b08af9cc9d6308ec1953 |
| |
| 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-2023-52764 |
| 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/media/usb/gspca/cpia1.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/69bba62600bd91d6b7c1e8ca181faf8ac64f7060 |
| https://git.kernel.org/stable/c/2eee8edfff90e22980a6b22079d238c3c9d323bb |
| https://git.kernel.org/stable/c/8f83c85ee88225319c52680792320c02158c2a9b |
| https://git.kernel.org/stable/c/c6b6b8692218da73b33b310d7c1df90f115bdd9a |
| https://git.kernel.org/stable/c/09cd8b561aa9796903710a1046957f2b112c8f26 |
| https://git.kernel.org/stable/c/a647f27a7426d2fe1b40da7c8fa2b81354a51177 |
| https://git.kernel.org/stable/c/93bddd6529f187f510eec759f37d0569243c9809 |
| https://git.kernel.org/stable/c/e2d7149b913d14352c82624e723ce1c211ca06d3 |
| https://git.kernel.org/stable/c/099be1822d1f095433f4b08af9cc9d6308ec1953 |
