| 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-2024-44969: s390/sclp: Prevent release of buffer in I/O |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| s390/sclp: Prevent release of buffer in I/O |
| |
| When a task waiting for completion of a Store Data operation is |
| interrupted, an attempt is made to halt this operation. If this attempt |
| fails due to a hardware or firmware problem, there is a chance that the |
| SCLP facility might store data into buffers referenced by the original |
| operation at a later time. |
| |
| Handle this situation by not releasing the referenced data buffers if |
| the halt attempt fails. For current use cases, this might result in a |
| leak of few pages of memory in case of a rare hardware/firmware |
| malfunction. |
| |
| The Linux kernel CVE team has assigned CVE-2024-44969 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.19.320 with commit 7a7e60ed23d471a07dbbe72565d2992ee8244bbe |
| Fixed in 5.4.282 with commit 1ec5ea9e25f582fd6999393e2f2c3bf56f234e05 |
| Fixed in 5.10.224 with commit a3e52a4c22c846858a6875e1c280030a3849e148 |
| Fixed in 5.15.165 with commit a88a49473c94ccfd8dce1e766aacf3c627278463 |
| Fixed in 6.1.105 with commit 46f67233b011385d53cf14d272431755de3a7c79 |
| Fixed in 6.6.46 with commit 1e8b7fb427af6b2ddd54eff66a6b428a81c96633 |
| Fixed in 6.10.5 with commit 2429ea3b4330e3653b72b210a0d5f2a717359506 |
| Fixed in 6.11 with commit bf365071ea92b9579d5a272679b74052a5643e35 |
| |
| 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-2024-44969 |
| 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/s390/char/sclp_sd.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/7a7e60ed23d471a07dbbe72565d2992ee8244bbe |
| https://git.kernel.org/stable/c/1ec5ea9e25f582fd6999393e2f2c3bf56f234e05 |
| https://git.kernel.org/stable/c/a3e52a4c22c846858a6875e1c280030a3849e148 |
| https://git.kernel.org/stable/c/a88a49473c94ccfd8dce1e766aacf3c627278463 |
| https://git.kernel.org/stable/c/46f67233b011385d53cf14d272431755de3a7c79 |
| https://git.kernel.org/stable/c/1e8b7fb427af6b2ddd54eff66a6b428a81c96633 |
| https://git.kernel.org/stable/c/2429ea3b4330e3653b72b210a0d5f2a717359506 |
| https://git.kernel.org/stable/c/bf365071ea92b9579d5a272679b74052a5643e35 |
