sctp: add mutual exclusion in proc_sctp_do_udp_port()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-22062
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-04-16 15:15:59 UTC
Updated2026-07-30 06:22:10 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: sctp: add mutual exclusion in proc_sctp_do_udp_port() We must serialize calls to sctp_udp_sock_stop() and sctp_udp_sock_start() or risk a crash as syzbot reported: Oops: general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] CPU: 1 UID: 0 PID: 6551 Comm: syz.1.44 Not tainted 6.14.0-syzkaller-g7f2ff7b62617 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:kernel_sock_shutdown+0x47/0x70 net/socket.c:3653 Call Trace: <TASK> udp_tunnel_sock_release+0x68/0x80 net/ipv4/udp_tunnel_core.c:181 sctp_udp_sock_stop+0x71/0x160 net/sctp/protocol.c:930 proc_sctp_do_udp_port+0x264/0x450 net/sctp/sysctl.c:553 proc_sys_call_handler+0x3d0/0x5b0 fs/proc/proc_sysctl.c:601 iter_file_splice_write+0x91c/0x1150 fs/splice.c:738 do_splice_from fs/splice.c:935 [inline] direct_splice_actor+0x18f/0x6c0 fs/splice.c:1158 splice_direct_to_actor+0x342/0xa30 fs/splice.c:1102 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0x174/0x240 fs/splice.c:1227 do_sendfile+0xafd/0xe50 fs/read_write.c:1368 __do_sys_sendfile64 fs/read_write.c:1429 [inline] __se_sys_sendfile64 fs/read_write.c:1415 [inline] __x64_sys_sendfile64+0x1d8/0x220 fs/read_write.c:1415 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]

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-476

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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 046c052b475e7119b6a30e3483e2888fc606a2f8 65ccb2793da7401772a3ffe85355c831b313c59f git Not specified
CNA Linux Linux affected 046c052b475e7119b6a30e3483e2888fc606a2f8 386507cb6fb7cdef598ddcb3f0fa37e6ca9e789d git Not specified
CNA Linux Linux affected 046c052b475e7119b6a30e3483e2888fc606a2f8 b3598f53211ba1025485306de2733bdd241311a3 git Not specified
CNA Linux Linux affected 046c052b475e7119b6a30e3483e2888fc606a2f8 e5178bfc55b3a78000f0f8298e7ade88783ce581 git Not specified
CNA Linux Linux affected 046c052b475e7119b6a30e3483e2888fc606a2f8 efb8cb487be8f4ba6aaef616011d702d6a083ed1 git Not specified
CNA Linux Linux affected 046c052b475e7119b6a30e3483e2888fc606a2f8 d3d7675d77622f6ca1aae14c51f80027b36283f8 git Not specified
CNA Linux Linux affected 046c052b475e7119b6a30e3483e2888fc606a2f8 10206302af856791fbcc27a33ed3c3eb09b2793d git Not specified
CNA Linux Linux affected 5.11 Not specified
CNA Linux Linux unaffected 5.11 semver Not specified
CNA Linux Linux unaffected 5.15.184 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.140 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.92 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.23 6.12.* semver Not specified
CNA Linux Linux unaffected 6.13.11 6.13.* semver Not specified
CNA Linux Linux unaffected 6.14.2 6.14.* semver Not specified
CNA Linux Linux unaffected 6.15 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d3d7675d77622f6ca1aae14c51f80027b36283f8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/386507cb6fb7cdef598ddcb3f0fa37e6ca9e789d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
lists.debian.org/debian-lts-announce/2025/08/msg00010.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/e5178bfc55b3a78000f0f8298e7ade88783ce581 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b3598f53211ba1025485306de2733bdd241311a3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/10206302af856791fbcc27a33ed3c3eb09b2793d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/65ccb2793da7401772a3ffe85355c831b313c59f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/efb8cb487be8f4ba6aaef616011d702d6a083ed1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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