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TI-2017-14449 Aliases CVE-2017-1000112GHSA-r7cm-47vv-77vj

Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch.

Priority MEDIUM 50CWE-362Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 27 fixed, 1 without a fix

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

Summary

Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSG_MORE __ip_append_data() calls ip_ufo_append_data() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb->len becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skb_prev->len - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skb_copy_and_csum_bits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 ("[IPv4/IPv6]: UFO Scatter-gather approach") on Oct 18 2005.

Why it matters now

EPSS 0.20797 97th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Partial Red Hat: 7 advisoriesRed Hat: 27 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*2.6.15 to before 3.10.108; 3.11 to before 3.16.47; 3.17 to before 3.18.65; 3.19 to before 4.4.82; 4.5 to before 4.9.43; 4.10 to before 4.12.7VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 2.6.15 to before 3.10.108; 3.11 to before 3.16.47; 3.17 to before 3.18.65; 3.19 to before 4.4.82; 4.5 to before 4.9.43; 4.10 to before 4.12.7 Vulnerable ·Linux

Remediation

Red Hat 7 advisories

  • RHSA-2019:4159 Released 2019-12-10 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server AUS (v. 7.3) kernel-3.10.0-514.71.1.el7, kernel-abi-whitelists-3.10.0-514.71.1.el7, kernel-debug-3.10.0-514.71.1.el7 +8
    • Red Hat Enterprise Linux Server E4S (v. 7.3) kernel-3.10.0-514.71.1.el7, kernel-abi-whitelists-3.10.0-514.71.1.el7, kernel-bootwrapper-3.10.0-514.71.1.el7 +9
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.3) kernel-tools-libs-devel-3.10.0-514.71.1.el7
    • Red Hat Enterprise Linux Server Optional E4S (v. 7.3) kernel-debug-devel-3.10.0-514.71.1.el7, kernel-tools-libs-devel-3.10.0-514.71.1.el7
    • Red Hat Enterprise Linux Server Optional TUS (v. 7.3) kernel-tools-libs-devel-3.10.0-514.71.1.el7
    • Red Hat Enterprise Linux Server TUS (v. 7.3) kernel-3.10.0-514.71.1.el7, kernel-abi-whitelists-3.10.0-514.71.1.el7, kernel-debug-3.10.0-514.71.1.el7 +8
  • RHSA-2019:1931 Released 2019-07-29 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Server (v. 5 ELS) kernel-2.6.18-438.el5, kernel-PAE-2.6.18-438.el5, kernel-PAE-devel-2.6.18-438.el5 +10
  • RHSA-2019:1932 Released 2019-07-29 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux Long Life (v. 5.9 server) kernel-2.6.18-348.44.1.el5, kernel-PAE-2.6.18-348.44.1.el5, kernel-PAE-devel-2.6.18-348.44.1.el5 +8
Show 4 more Red Hat advisories
  • RHSA-2017:3200 Released 2017-11-14 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-696.16.1.el6, kernel-abi-whitelists-2.6.32-696.16.1.el6, kernel-debug-2.6.32-696.16.1.el6 +6
    • Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf-2.6.32-696.16.1.el6
    • Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-696.16.1.el6, kernel-abi-whitelists-2.6.32-696.16.1.el6, kernel-debug-2.6.32-696.16.1.el6 +6
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf-2.6.32-696.16.1.el6
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-696.16.1.el6, kernel-abi-whitelists-2.6.32-696.16.1.el6, kernel-bootwrapper-2.6.32-696.16.1.el6 +9
    • Red Hat Enterprise Linux Server Optional (v. 6) python-perf-2.6.32-696.16.1.el6
    • Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-696.16.1.el6, kernel-abi-whitelists-2.6.32-696.16.1.el6, kernel-debug-2.6.32-696.16.1.el6 +6
    • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf-2.6.32-696.16.1.el6
  • RHSA-2017:2931 Released 2017-10-19 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-693.5.2.rt56.626.el7, kernel-rt-debug-3.10.0-693.5.2.rt56.626.el7, kernel-rt-debug-devel-3.10.0-693.5.2.rt56.626.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-693.5.2.rt56.626.el7, kernel-rt-debug-3.10.0-693.5.2.rt56.626.el7, kernel-rt-debug-devel-3.10.0-693.5.2.rt56.626.el7 +7
  • RHSA-2017:2930 Released 2017-10-19 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-693.5.2.el7, kernel-abi-whitelists-3.10.0-693.5.2.el7, kernel-debug-3.10.0-693.5.2.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.5.2.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-693.5.2.el7, kernel-abi-whitelists-3.10.0-693.5.2.el7, kernel-debug-3.10.0-693.5.2.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.5.2.el7
    • Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-693.5.2.el7, kernel-abi-whitelists-3.10.0-693.5.2.el7, kernel-bootwrapper-3.10.0-693.5.2.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-693.5.2.el7, kernel-tools-libs-devel-3.10.0-693.5.2.el7
    • Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-693.5.2.el7, kernel-abi-whitelists-3.10.0-693.5.2.el7, kernel-debug-3.10.0-693.5.2.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.5.2.el7
  • RHSA-2017:2918 Released 2017-10-19 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-693.5.2.rt56.592.el6rt, kernel-rt-debug-1:3.10.0-693.5.2.rt56.592.el6rt, kernel-rt-debug-devel-1:3.10.0-693.5.2.rt56.592.el6rt +7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2017:3200
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2017:3200
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2017:3200
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2017:3200
Red Hat Enterprise Linux Long Life (v. 5.9 server)Fixed RHSA-2019:1932
Red Hat Enterprise Linux Realtime (v. 7)Fixed RHSA-2017:2931
Red Hat Enterprise Linux Server (v. 5 ELS)Fixed RHSA-2019:1931
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2017:3200
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux Server AUS (v. 7.3)Fixed RHSA-2019:4159
Red Hat Enterprise Linux Server E4S (v. 7.3)Fixed RHSA-2019:4159
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2017:3200
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux Server Optional AUS (v. 7.3)Fixed RHSA-2019:4159
Red Hat Enterprise Linux Server Optional E4S (v. 7.3)Fixed RHSA-2019:4159
Red Hat Enterprise Linux Server Optional TUS (v. 7.3)Fixed RHSA-2019:4159
Red Hat Enterprise Linux Server TUS (v. 7.3)Fixed RHSA-2019:4159
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2017:3200
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2017:3200
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2017:2930
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2017:2931
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2017:2918

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-1000112
  2. 2026-10-03 Alias added: GHSA-r7cm-47vv-77vj

References

Exploit 1

Patch 1

Advisory 9

  • 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