team: better TEAM_OPTION_TYPE_STRING validation

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Summary

CVECVE-2025-21787
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-02-27 03:15:19 UTC
Updated2026-05-12 13:16:36 UTC
DescriptionIn 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

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-908

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 7c30483d0f6bdb2230e10e3e4be5167927eac7a0 git Not specified
CNA Linux Linux affected 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 7f5af50f3aa0af8cbef9fb76fffeed69e8143f59 git Not specified
CNA Linux Linux affected 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 f443687ad20c70320d1248f35f57bf46cac8df0a git Not specified
CNA Linux Linux affected 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 4512482e4805dd30bc77dec511f2a2edba5cb868 git Not specified
CNA Linux Linux affected 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 d071a91fa614ecdf760c29f61f6a7bfb7df796d6 git Not specified
CNA Linux Linux affected 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 4236bf4716589558cc0f3c3612642b2c2141b04e git Not specified
CNA Linux Linux affected 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 8401cade1918281177974b32c925afdce750d292 git Not specified
CNA Linux Linux affected 3d249d4ca7d0ed6629a135ea1ea21c72286c0d80 5bef3ac184b5626ea62385d6b82a1992b89d7940 git Not specified
CNA Linux Linux affected 3.3 Not specified
CNA Linux Linux unaffected 3.3 semver Not specified
CNA Linux Linux unaffected 5.4.291 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.235 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.179 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.129 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.79 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.16 6.12.* semver Not specified
CNA Linux Linux unaffected 6.13.4 6.13.* semver Not specified
CNA Linux Linux unaffected 6.14 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 TM MFP - GNU/Linux Subsystem affected * custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2025/05/msg00030.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/7f5af50f3aa0af8cbef9fb76fffeed69e8143f59 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7c30483d0f6bdb2230e10e3e4be5167927eac7a0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f443687ad20c70320d1248f35f57bf46cac8df0a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
cert-portal.siemens.com/productcert/html/ssa-265688.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/4236bf4716589558cc0f3c3612642b2c2141b04e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/d071a91fa614ecdf760c29f61f6a7bfb7df796d6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/8401cade1918281177974b32c925afdce750d292 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Mailing List, Patch
git.kernel.org/stable/c/5bef3ac184b5626ea62385d6b82a1992b89d7940 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Mailing List, Patch
lists.debian.org/debian-lts-announce/2025/03/msg00028.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/4512482e4805dd30bc77dec511f2a2edba5cb868 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Mailing List, Patch
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