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TI-2025-26053 Aliases CVE-2025-38718GHSA-p9gg-wgfj-48p7

sctp: linearize cloned gso packets in sctp_rcv

Priority LOW 35CWE-908Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 38 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: sctp: linearize cloned gso packets in sctp_rcv A cloned head skb still shares these frag skbs in fraglist with the original head skb. It's not safe to access these frag skbs. syzbot reported two use-of-uninitialized-memory bugs caused by this: BUG: KMSAN: uninit-value in sctp_inq_pop+0x15b7/0x1920 net/sctp/inqueue.c:211 sctp_inq_pop+0x15b7/0x1920 net/sctp/inqueue.c:211 sctp_assoc_bh_rcv+0x1a7/0xc50 net/sctp/associola.c:998 sctp_inq_push+0x2ef/0x380 net/sctp/inqueue.c:88 sctp_backlog_rcv+0x397/0xdb0 net/sctp/input.c:331 sk_backlog_rcv+0x13b/0x420 include/net/sock.h:1122 __release_sock+0x1da/0x330 net/core/sock.c:3106 release_sock+0x6b/0x250 net/core/sock.c:3660 sctp_wait_for_connect+0x487/0x820 net/sctp/socket.c:9360 sctp_sendmsg_to_asoc+0x1ec1/0x1f00 net/sctp/socket.c:1885 sctp_sendmsg+0x32b9/0x4a80 net/sctp/socket.c:2031 inet_sendmsg+0x25a/0x280 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:718 [inline] and BUG: KMSAN: uninit-value in sctp_assoc_bh_rcv+0x34e/0xbc0 net/sctp/associola.c:987 sctp_assoc_bh_rcv+0x34e/0xbc0 net/sctp/associola.c:987 sctp_inq_push+0x2a3/0x350 net/sctp/inqueue.c:88 sctp_backlog_rcv+0x3c7/0xda0 net/sctp/input.c:331 sk_backlog_rcv+0x142/0x420 include/net/sock.h:1148 __release_sock+0x1d3/0x330 net/core/sock.c:3213 release_sock+0x6b/0x270 net/core/sock.c:3767 sctp_wait_for_connect+0x458/0x820 net/sctp/socket.c:9367 sctp_sendmsg_to_asoc+0x223a/0x2260 net/sctp/socket.c:1886 sctp_sendmsg+0x3910/0x49f0 net/sctp/socket.c:2032 inet_sendmsg+0x269/0x2a0 net/ipv4/af_inet.c:851 sock_sendmsg_nosec net/socket.c:712 [inline] This patch fixes it by linearizing cloned gso packets in sctp_rcv().

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00171 6th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.4.297, 5.10.241, 5.15.190 +6Red Hat: 15 advisoriesRed Hat: 38 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux4.8 and later5.4.297, 5.10.241, 5.15.190, 6.1.162, 6.6.103, 6.12.43, 6.15.11, 6.16.2, 6.17Patch availableCNA
  • Linux VendorLinux Affected 4.8 and later Fixed in 5.4.297, 5.10.241, 5.15.190, 6.1.162, 6.6.103, 6.12.43, 6.15.11, 6.16.2, 6.17 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.8 to before 5.4.297; 5.5 to before 5.10.241; 5.11 to before 5.15.190; 5.16 to before 6.6.103; 6.7 to before 6.12.43; 6.13 to before 6.15.11; 6.16 to before 6.16.2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*6.17 rc1VulnerableLinux
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.8 to before 5.4.297; 5.5 to before 5.10.241; 5.11 to before 5.15.190; 5.16 to before 6.6.103; 6.7 to before 6.12.43; 6.13 to before 6.15.11; 6.16 to before 6.16.2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* Versions 6.17 rc1 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.4.297, 5.10.241, 5.15.190, 6.1.162, 6.6.103, 6.12.43, 6.15.11, 6.16.2, 6.17

Red Hat 15 advisories

  • RHSA-2025:23463 Released 2025-12-17 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.182.1.el8_4, kernel-4.18.0-305.182.1.el8_4, kernel-abi-stablelists-4.18.0-305.182.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) bpftool-4.18.0-305.182.1.el8_4, kernel-4.18.0-305.182.1.el8_4, kernel-abi-stablelists-4.18.0-305.182.1.el8_4 +14
  • RHSA-2025:23445 Released 2025-12-17 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) bpftool-4.18.0-193.178.1.el8_2, kernel-4.18.0-193.178.1.el8_2, kernel-abi-whitelists-4.18.0-193.178.1.el8_2 +14
  • RHSA-2025:22914 Released 2025-12-09 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux for Real Time (v. 7 ELS) kernel-rt-3.10.0-1160.143.1.rt56.1295.el7, kernel-rt-debug-3.10.0-1160.143.1.rt56.1295.el7, kernel-rt-debug-devel-3.10.0-1160.143.1.rt56.1295.el7 +4
Show 12 more Red Hat advisories
  • RHSA-2025:22910 Released 2025-12-09 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) bpftool-3.10.0-1160.143.1.el7, kernel-3.10.0-1160.143.1.el7, kernel-abi-whitelists-3.10.0-1160.143.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) kernel-debug-devel-3.10.0-1160.143.1.el7, kernel-tools-libs-devel-3.10.0-1160.143.1.el7
  • RHSA-2025:22072 Released 2025-11-25 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.120.1.el8_8, kernel-4.18.0-477.120.1.el8_8, kernel-abi-stablelists-4.18.0-477.120.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.120.1.el8_8, kernel-4.18.0-477.120.1.el8_8, kernel-abi-stablelists-4.18.0-477.120.1.el8_8 +14
  • RHSA-2025:22006 Released 2025-11-25 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.170.1.el8_6, kernel-4.18.0-372.170.1.el8_6, kernel-abi-stablelists-4.18.0-372.170.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.170.1.el8_6, kernel-4.18.0-372.170.1.el8_6, kernel-abi-stablelists-4.18.0-372.170.1.el8_6 +19
    • Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.170.1.el8_6, kernel-4.18.0-372.170.1.el8_6, kernel-abi-stablelists-4.18.0-372.170.1.el8_6 +14
  • RHSA-2025:21760 Released 2025-11-19 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.100.1.el9_4, libperf-5.14.0-427.100.1.el9_4
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.100.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.100.1.el9_4, kernel-64k-devel-5.14.0-427.100.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.100.1.el9_4, kernel-5.14.0-427.100.1.el9_4, kernel-64k-5.14.0-427.100.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.100.1.el9_4, kernel-rt-core-5.14.0-427.100.1.el9_4, kernel-rt-debug-5.14.0-427.100.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.100.1.el9_4, kernel-rt-core-5.14.0-427.100.1.el9_4, kernel-rt-debug-5.14.0-427.100.1.el9_4 +11
  • RHSA-2025:21136 Released 2025-11-12 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt-5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-core-5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-debug-5.14.0-70.153.1.rt21.225.el9_0 +9
    • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt-5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-core-5.14.0-70.153.1.rt21.225.el9_0, kernel-rt-debug-5.14.0-70.153.1.rt21.225.el9_0 +7
  • RHSA-2025:21091 Released 2025-11-12 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) kernel-debug-devel-5.14.0-70.153.1.el9_0, kernel-debug-devel-matched-5.14.0-70.153.1.el9_0, kernel-devel-5.14.0-70.153.1.el9_0 +5
    • Red Hat Enterprise Linux BaseOS E4S (v.9.0) bpftool-5.14.0-70.153.1.el9_0, kernel-5.14.0-70.153.1.el9_0, kernel-abi-stablelists-5.14.0-70.153.1.el9_0 +14
  • RHSA-2025:19224 Released 2025-10-29 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.144.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.144.1.el9_2, kernel-64k-devel-5.14.0-284.144.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.144.1.el9_2, kernel-5.14.0-284.144.1.el9_2, kernel-64k-5.14.0-284.144.1.el9_2 +29
  • RHSA-2025:19223 Released 2025-10-29 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.144.1.rt14.429.el9_2, kernel-rt-core-5.14.0-284.144.1.rt14.429.el9_2, kernel-rt-debug-5.14.0-284.144.1.rt14.429.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.144.1.rt14.429.el9_2, kernel-rt-core-5.14.0-284.144.1.rt14.429.el9_2, kernel-rt-debug-5.14.0-284.144.1.rt14.429.el9_2 +11
  • RHSA-2025:17396 Released 2025-10-07 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-55.38.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.38.1.el10_0, kernel-64k-devel-6.12.0-55.38.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-55.38.1.el10_0, kernel-64k-6.12.0-55.38.1.el10_0, kernel-64k-core-6.12.0-55.38.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-55.38.1.el10_0, libperf-6.12.0-55.38.1.el10_0
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-55.38.1.el10_0, kernel-rt-64k-6.12.0-55.38.1.el10_0, kernel-rt-64k-core-6.12.0-55.38.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-55.38.1.el10_0, kernel-rt-core-6.12.0-55.38.1.el10_0, kernel-rt-debug-6.12.0-55.38.1.el10_0 +11
  • RHSA-2025:16919 Released 2025-09-29 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.77.1.el8_10, kernel-4.18.0-553.77.1.el8_10, kernel-abi-stablelists-4.18.0-553.77.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.77.1.el8_10
  • RHSA-2025:16920 Released 2025-09-29 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.77.1.rt7.418.el8_10, kernel-rt-core-4.18.0-553.77.1.rt7.418.el8_10, kernel-rt-debug-4.18.0-553.77.1.rt7.418.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.77.1.rt7.418.el8_10, kernel-rt-core-4.18.0-553.77.1.rt7.418.el8_10, kernel-rt-debug-4.18.0-553.77.1.rt7.418.el8_10 +7
  • RHSA-2025:16880 Released 2025-09-29 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-570.49.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.49.1.el9_6, kernel-64k-devel-5.14.0-570.49.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-570.49.1.el9_6, kernel-64k-5.14.0-570.49.1.el9_6, kernel-64k-core-5.14.0-570.49.1.el9_6 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-570.49.1.el9_6, libperf-5.14.0-570.49.1.el9_6
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-570.49.1.el9_6, kernel-rt-64k-5.14.0-570.49.1.el9_6, kernel-rt-64k-core-5.14.0-570.49.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-570.49.1.el9_6, kernel-rt-core-5.14.0-570.49.1.el9_6, kernel-rt-debug-5.14.0-570.49.1.el9_6 +11

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.9.4)Fixed RHSA-2025:21760
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2025:17396
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:16880
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2025:21091
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2025:19224
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2025:21760
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2025:17396
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2025:16919
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2025:16880
Red Hat Enterprise Linux BaseOS AUS (v. 8.2)Fixed RHSA-2025:23445
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2025:23463
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2025:22006
Red Hat Enterprise Linux BaseOS E4S (v.8.6)Fixed RHSA-2025:22006
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2025:22072
Red Hat Enterprise Linux BaseOS E4S (v.9.0)Fixed RHSA-2025:21091
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2025:19224
Red Hat Enterprise Linux BaseOS EUS (v.9.4)Fixed RHSA-2025:21760
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2025:23463
Red Hat Enterprise Linux BaseOS TUS (v.8.6)Fixed RHSA-2025:22006
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2025:22072
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2025:16919
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2025:17396
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2025:16880
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2025:16920
Red Hat Enterprise Linux NFV E4S (v.9.0)Fixed RHSA-2025:21136
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2025:16920
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2025:17396
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2025:16880
Red Hat Enterprise Linux Real Time E4S (v.9.0)Fixed RHSA-2025:21136
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2025:19223
Red Hat Enterprise Linux Real Time EUS (v.9.4)Fixed RHSA-2025:21760
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2025:17396
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2025:16880
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2025:19223
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4)Fixed RHSA-2025:21760
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2025:22910
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2025:22910
Red Hat Enterprise Linux for Real Time (v. 7 ELS)Fixed RHSA-2025:22914

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-38718
  2. 2026-10-03 Alias added: GHSA-p9gg-wgfj-48p7

References

Patch 9

Advisory 1

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences