| 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-2023-52616: crypto: lib/mpi - Fix unexpected pointer access in mpi_ec_init |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| crypto: lib/mpi - Fix unexpected pointer access in mpi_ec_init |
| |
| When the mpi_ec_ctx structure is initialized, some fields are not |
| cleared, causing a crash when referencing the field when the |
| structure was released. Initially, this issue was ignored because |
| memory for mpi_ec_ctx is allocated with the __GFP_ZERO flag. |
| For example, this error will be triggered when calculating the |
| Za value for SM2 separately. |
| |
| The Linux kernel CVE team has assigned CVE-2023-52616 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.10 with commit d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f and fixed in 5.10.210 with commit 0c3687822259a7628c85cd21a3445cbe3c367165 |
| Issue introduced in 5.10 with commit d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f and fixed in 5.15.149 with commit 2bb86817b33c9d704e127f92b838035a72c315b6 |
| Issue introduced in 5.10 with commit d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f and fixed in 6.1.79 with commit bb44477d4506e52785693a39f03cdc6a2c5e8598 |
| Issue introduced in 5.10 with commit d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f and fixed in 6.6.15 with commit 7ebf812b7019fd2d4d5a7ca45ef4bf3a6f4bda0a |
| Issue introduced in 5.10 with commit d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f and fixed in 6.7.3 with commit 7abdfd45a650c714d5ebab564bb1b988f14d9b49 |
| Issue introduced in 5.10 with commit d58bb7e55a8a65894cc02f27c3e2bf9403e7c40f and fixed in 6.8 with commit ba3c5574203034781ac4231acf117da917efcd2a |
| |
| 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-2023-52616 |
| 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: |
| lib/crypto/mpi/ec.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/0c3687822259a7628c85cd21a3445cbe3c367165 |
| https://git.kernel.org/stable/c/2bb86817b33c9d704e127f92b838035a72c315b6 |
| https://git.kernel.org/stable/c/bb44477d4506e52785693a39f03cdc6a2c5e8598 |
| https://git.kernel.org/stable/c/7ebf812b7019fd2d4d5a7ca45ef4bf3a6f4bda0a |
| https://git.kernel.org/stable/c/7abdfd45a650c714d5ebab564bb1b988f14d9b49 |
| https://git.kernel.org/stable/c/ba3c5574203034781ac4231acf117da917efcd2a |
