| 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-2024-56710: ceph: fix memory leak in ceph_direct_read_write() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ceph: fix memory leak in ceph_direct_read_write() |
| |
| The bvecs array which is allocated in iter_get_bvecs_alloc() is leaked |
| and pages remain pinned if ceph_alloc_sparse_ext_map() fails. |
| |
| There is no need to delay the allocation of sparse_ext map until after |
| the bvecs array is set up, so fix this by moving sparse_ext allocation |
| a bit earlier. Also, make a similar adjustment in __ceph_sync_read() |
| for consistency (a leak of the same kind in __ceph_sync_read() has been |
| addressed differently). |
| |
| The Linux kernel CVE team has assigned CVE-2024-56710 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.6 with commit 03bc06c7b0bd8d86b9f17f459acaeb1283ba2700 and fixed in 6.6.69 with commit 44e518abbb498075ae85c7d1d1a503a6bb05ea2d |
| Issue introduced in 6.6 with commit 03bc06c7b0bd8d86b9f17f459acaeb1283ba2700 and fixed in 6.12.7 with commit eb9041837123f31d5897e99bb761f46cb4ce5859 |
| Issue introduced in 6.6 with commit 03bc06c7b0bd8d86b9f17f459acaeb1283ba2700 and fixed in 6.13 with commit 66e0c4f91461d17d48071695271c824620bed4ef |
| |
| 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-2024-56710 |
| 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: |
| fs/ceph/file.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/44e518abbb498075ae85c7d1d1a503a6bb05ea2d |
| https://git.kernel.org/stable/c/eb9041837123f31d5897e99bb761f46cb4ce5859 |
| https://git.kernel.org/stable/c/66e0c4f91461d17d48071695271c824620bed4ef |
