| 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-2025-21787: team: better TEAM_OPTION_TYPE_STRING validation |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| team: better TEAM_OPTION_TYPE_STRING validation |
| |
| syzbot reported following splat [1] |
| |
| Make sure user-provided data contains one nul byte. |
| |
| [1] |
| BUG: KMSAN: uninit-value in string_nocheck lib/vsprintf.c:633 [inline] |
| BUG: KMSAN: uninit-value in string+0x3ec/0x5f0 lib/vsprintf.c:714 |
| string_nocheck lib/vsprintf.c:633 [inline] |
| string+0x3ec/0x5f0 lib/vsprintf.c:714 |
| vsnprintf+0xa5d/0x1960 lib/vsprintf.c:2843 |
| __request_module+0x252/0x9f0 kernel/module/kmod.c:149 |
| team_mode_get drivers/net/team/team_core.c:480 [inline] |
| team_change_mode drivers/net/team/team_core.c:607 [inline] |
| team_mode_option_set+0x437/0x970 drivers/net/team/team_core.c:1401 |
| team_option_set drivers/net/team/team_core.c:375 [inline] |
| team_nl_options_set_doit+0x1339/0x1f90 drivers/net/team/team_core.c:2662 |
| genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] |
| genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] |
| genl_rcv_msg+0x1214/0x12c0 net/netlink/genetlink.c:1210 |
| netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2543 |
| genl_rcv+0x40/0x60 net/netlink/genetlink.c:1219 |
| netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline] |
| netlink_unicast+0xf52/0x1260 net/netlink/af_netlink.c:1348 |
| netlink_sendmsg+0x10da/0x11e0 net/netlink/af_netlink.c:1892 |
| sock_sendmsg_nosec net/socket.c:718 [inline] |
| __sock_sendmsg+0x30f/0x380 net/socket.c:733 |
| ____sys_sendmsg+0x877/0xb60 net/socket.c:2573 |
| ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2627 |
| __sys_sendmsg net/socket.c:2659 [inline] |
| __do_sys_sendmsg net/socket.c:2664 [inline] |
| __se_sys_sendmsg net/socket.c:2662 [inline] |
| __x64_sys_sendmsg+0x212/0x3c0 net/socket.c:2662 |
| x64_sys_call+0x2ed6/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:47 |
| do_syscall_x64 arch/x86/entry/common.c:52 [inline] |
| do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83 |
| entry_SYSCALL_64_after_hwframe+0x77/0x7f |
| |
| The Linux kernel CVE team has assigned CVE-2025-21787 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.3 with commit 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 and fixed in 5.4.291 with commit 7c30483d0f6bdb2230e10e3e4be5167927eac7a0 |
| Issue introduced in 3.3 with commit 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 and fixed in 5.10.235 with commit 7f5af50f3aa0af8cbef9fb76fffeed69e8143f59 |
| Issue introduced in 3.3 with commit 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 and fixed in 5.15.179 with commit f443687ad20c70320d1248f35f57bf46cac8df0a |
| Issue introduced in 3.3 with commit 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 and fixed in 6.1.129 with commit 4512482e4805dd30bc77dec511f2a2edba5cb868 |
| Issue introduced in 3.3 with commit 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 and fixed in 6.6.79 with commit d071a91fa614ecdf760c29f61f6a7bfb7df796d6 |
| Issue introduced in 3.3 with commit 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 and fixed in 6.12.16 with commit 4236bf4716589558cc0f3c3612642b2c2141b04e |
| Issue introduced in 3.3 with commit 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 and fixed in 6.13.4 with commit 8401cade1918281177974b32c925afdce750d292 |
| Issue introduced in 3.3 with commit 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 and fixed in 6.14 with commit 5bef3ac184b5626ea62385d6b82a1992b89d7940 |
| |
| 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-2025-21787 |
| 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/net/team/team_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/7c30483d0f6bdb2230e10e3e4be5167927eac7a0 |
| https://git.kernel.org/stable/c/7f5af50f3aa0af8cbef9fb76fffeed69e8143f59 |
| https://git.kernel.org/stable/c/f443687ad20c70320d1248f35f57bf46cac8df0a |
| https://git.kernel.org/stable/c/4512482e4805dd30bc77dec511f2a2edba5cb868 |
| https://git.kernel.org/stable/c/d071a91fa614ecdf760c29f61f6a7bfb7df796d6 |
| https://git.kernel.org/stable/c/4236bf4716589558cc0f3c3612642b2c2141b04e |
| https://git.kernel.org/stable/c/8401cade1918281177974b32c925afdce750d292 |
| https://git.kernel.org/stable/c/5bef3ac184b5626ea62385d6b82a1992b89d7940 |
