| 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-2022-49748: perf/x86/amd: fix potential integer overflow on shift of a int |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| perf/x86/amd: fix potential integer overflow on shift of a int |
| |
| The left shift of int 32 bit integer constant 1 is evaluated using 32 bit |
| arithmetic and then passed as a 64 bit function argument. In the case where |
| i is 32 or more this can lead to an overflow. Avoid this by shifting |
| using the BIT_ULL macro instead. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49748 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.4.22 with commit d8a6a443ff0aea5893f0a7f2726973b496b76420 and fixed in 5.4.231 with commit fbf7b0e4cef3b5470b610f14fb9faa5ee7f63954 |
| Issue introduced in 5.6 with commit 471af006a747f1c535c8a8c6c0973c320fe01b22 and fixed in 5.10.166 with commit f84c9b72fb200633774704d8020f769c88a4b249 |
| Issue introduced in 5.6 with commit 471af006a747f1c535c8a8c6c0973c320fe01b22 and fixed in 5.15.91 with commit 14cc13e433e1067557435b1adbf05608d7d47a93 |
| Issue introduced in 5.6 with commit 471af006a747f1c535c8a8c6c0973c320fe01b22 and fixed in 6.1.9 with commit a4d01fb87ece45d4164fd725890211ccf9a307a9 |
| Issue introduced in 5.6 with commit 471af006a747f1c535c8a8c6c0973c320fe01b22 and fixed in 6.2 with commit 08245672cdc6505550d1a5020603b0a8d4a6dcc7 |
| Issue introduced in 5.5.6 with commit 3512462036dbe44d88e93e75ee8a993781183ddb |
| |
| 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-2022-49748 |
| 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: |
| arch/x86/events/amd/core.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/fbf7b0e4cef3b5470b610f14fb9faa5ee7f63954 |
| https://git.kernel.org/stable/c/f84c9b72fb200633774704d8020f769c88a4b249 |
| https://git.kernel.org/stable/c/14cc13e433e1067557435b1adbf05608d7d47a93 |
| https://git.kernel.org/stable/c/a4d01fb87ece45d4164fd725890211ccf9a307a9 |
| https://git.kernel.org/stable/c/08245672cdc6505550d1a5020603b0a8d4a6dcc7 |
