| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-37902: dm: fix copying after src array boundaries |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| dm: fix copying after src array boundaries |
| |
| The blammed commit copied to argv the size of the reallocated argv, |
| instead of the size of the old_argv, thus reading and copying from |
| past the old_argv allocated memory. |
| |
| Following BUG_ON was hit: |
| [ 3.038929][ T1] kernel BUG at lib/string_helpers.c:1040! |
| [ 3.039147][ T1] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP |
| ... |
| [ 3.056489][ T1] Call trace: |
| [ 3.056591][ T1] __fortify_panic+0x10/0x18 (P) |
| [ 3.056773][ T1] dm_split_args+0x20c/0x210 |
| [ 3.056942][ T1] dm_table_add_target+0x13c/0x360 |
| [ 3.057132][ T1] table_load+0x110/0x3ac |
| [ 3.057292][ T1] dm_ctl_ioctl+0x424/0x56c |
| [ 3.057457][ T1] __arm64_sys_ioctl+0xa8/0xec |
| [ 3.057634][ T1] invoke_syscall+0x58/0x10c |
| [ 3.057804][ T1] el0_svc_common+0xa8/0xdc |
| [ 3.057970][ T1] do_el0_svc+0x1c/0x28 |
| [ 3.058123][ T1] el0_svc+0x50/0xac |
| [ 3.058266][ T1] el0t_64_sync_handler+0x60/0xc4 |
| [ 3.058452][ T1] el0t_64_sync+0x1b0/0x1b4 |
| [ 3.058620][ T1] Code: f800865e a9bf7bfd 910003fd 941f48aa (d4210000) |
| [ 3.058897][ T1] ---[ end trace 0000000000000000 ]--- |
| [ 3.059083][ T1] Kernel panic - not syncing: Oops - BUG: Fatal exception |
| |
| Fix it by copying the size of src, and not the size of dst, as it was. |
| |
| The Linux kernel CVE team has assigned CVE-2025-37902 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.15-rc5 with commit 5a2a6c428190f945c5cbf5791f72dbea83e97f66 and fixed in 6.15-rc6 with commit f1aff4bc199cb92c055668caed65505e3b4d2656 |
| |
| 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-2025-37902 |
| 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/md/dm-table.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/aaa763ab8cecae6308c5ec7f309e1bc3a7ebd29f |
| https://git.kernel.org/stable/c/4c4f168b46229d527bda801ef15ad793b069f0ae |
| https://git.kernel.org/stable/c/ed3248a403740a623c73afd95f88cc37e0cd3ad2 |
| https://git.kernel.org/stable/c/db62809197658954a67b446c30677bc25baaf9f3 |
| https://git.kernel.org/stable/c/a27cbadb995fa4cca90cefd74332c55c2c26616b |
| https://git.kernel.org/stable/c/f1aff4bc199cb92c055668caed65505e3b4d2656 |
