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TI-2024-17520 Aliases CVE-2024-26640GHSA-6q28-45j9-263v

tcp: add sanity checks to rx zerocopy

Priority LOW 34Published · 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: 19 fixed, 3 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: tcp: add sanity checks to rx zerocopy TCP rx zerocopy intent is to map pages initially allocated from NIC drivers, not pages owned by a fs. This patch adds to can_map_frag() these additional checks: - Page must not be a compound one. - page->mapping must be NULL. This fixes the panic reported by ZhangPeng. syzbot was able to loopback packets built with sendfile(), mapping pages owned by an ext4 file to TCP rx zerocopy. r3 = socket$inet_tcp(0x2, 0x1, 0x0) mmap(&(0x7f0000ff9000/0x4000)=nil, 0x4000, 0x0, 0x12, r3, 0x0) r4 = socket$inet_tcp(0x2, 0x1, 0x0) bind$inet(r4, &(0x7f0000000000)={0x2, 0x4e24, @multicast1}, 0x10) connect$inet(r4, &(0x7f00000006c0)={0x2, 0x4e24, @empty}, 0x10) r5 = openat$dir(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x181e42, 0x0) fallocate(r5, 0x0, 0x0, 0x85b8) sendfile(r4, r5, 0x0, 0x8ba0) getsockopt$inet_tcp_TCP_ZEROCOPY_RECEIVE(r4, 0x6, 0x23, &(0x7f00000001c0)={&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, &(0x7f0000000440)=0x40) r6 = openat$dir(0xffffffffffffff9c, &(0x7f00000000c0)='./file0\x00', 0x181e42, 0x0)

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00242 15th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.10.210, 5.15.149, 6.1.77 +3Red Hat: 7 advisoriesRed Hat: 19 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux4.18 and later5.10.210, 5.15.149, 6.1.77, 6.6.16, 6.7.4, 6.8Patch availableCNA
  • Linux VendorLinux Affected 4.18 and later Fixed in 5.10.210, 5.15.149, 6.1.77, 6.6.16, 6.7.4, 6.8 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.18 to before 5.10.210; 5.11 to before 5.15.149; 5.16 to before 6.1.77; 6.2 to before 6.6.16; 6.7 to before 6.7.4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:*6.8 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:*6.8 rc2VulnerableLinux
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.18 to before 5.10.210; 5.11 to before 5.15.149; 5.16 to before 6.1.77; 6.2 to before 6.6.16; 6.7 to before 6.7.4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* Versions 6.8 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* Versions 6.8 rc2 Vulnerable ·Linux
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.10.210, 5.15.149, 6.1.77, 6.6.16, 6.7.4, 6.8

Red Hat 7 advisories

  • RHSA-2024:9497 Released 2024-11-13 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.92.1.el9_2
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.92.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.92.1.el9_2, kernel-64k-devel-5.14.0-284.92.1.el9_2 +9
    • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.92.1.el9_2, kernel-5.14.0-284.92.1.el9_2, kernel-64k-5.14.0-284.92.1.el9_2 +29
  • RHSA-2024:9498 Released 2024-11-13 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.92.1.rt14.377.el9_2, kernel-rt-core-5.14.0-284.92.1.rt14.377.el9_2, kernel-rt-debug-5.14.0-284.92.1.rt14.377.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.92.1.rt14.377.el9_2, kernel-rt-core-5.14.0-284.92.1.rt14.377.el9_2, kernel-rt-debug-5.14.0-284.92.1.rt14.377.el9_2 +11
  • RHSA-2024:8617 Released 2024-10-30 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-427.42.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.42.1.el9_4, kernel-64k-devel-5.14.0-427.42.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.3.0-427.42.1.el9_4, kernel-5.14.0-427.42.1.el9_4, kernel-64k-5.14.0-427.42.1.el9_4 +29
    • Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-427.42.1.el9_4, libperf-5.14.0-427.42.1.el9_4
    • Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-427.42.1.el9_4, kernel-rt-core-5.14.0-427.42.1.el9_4, kernel-rt-debug-5.14.0-427.42.1.el9_4 +11
    • Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-427.42.1.el9_4, kernel-rt-core-5.14.0-427.42.1.el9_4, kernel-rt-debug-5.14.0-427.42.1.el9_4 +9
Show 4 more Red Hat advisories
  • RHSA-2024:5255 Released 2024-08-13 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.8.8) kernel-tools-libs-devel-4.18.0-477.67.1.el8_8
    • Red Hat Enterprise Linux BaseOS EUS (v.8.8) bpftool-4.18.0-477.67.1.el8_8, kernel-4.18.0-477.67.1.el8_8, kernel-abi-stablelists-4.18.0-477.67.1.el8_8 +19
  • RHSA-2024:5101 Released 2024-08-08 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.16.1.el8_10, kernel-4.18.0-553.16.1.el8_10, kernel-abi-stablelists-4.18.0-553.16.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.16.1.el8_10
  • RHSA-2024:5102 Released 2024-08-08 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-core-4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-debug-4.18.0-553.16.1.rt7.357.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-core-4.18.0-553.16.1.rt7.357.el8_10, kernel-rt-debug-4.18.0-553.16.1.rt7.357.el8_10 +7
  • RHSA-2024:5065 Released 2024-08-07 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.115.1.el8_6, kernel-4.18.0-372.115.1.el8_6, kernel-abi-stablelists-4.18.0-372.115.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.115.1.el8_6, kernel-4.18.0-372.115.1.el8_6, kernel-abi-stablelists-4.18.0-372.115.1.el8_6 +19
    • Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.115.1.el8_6, kernel-4.18.0-372.115.1.el8_6, kernel-abi-stablelists-4.18.0-372.115.1.el8_6 +14

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 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.8.8)Fixed RHSA-2024:5255
Red Hat CodeReady Linux Builder EUS (v.9.2)Fixed RHSA-2024:9497
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:8617
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:9497
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2024:5101
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2024:8617
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2024:5065
Red Hat Enterprise Linux BaseOS E4S (v.8.6)Fixed RHSA-2024:5065
Red Hat Enterprise Linux BaseOS EUS (v.8.8)Fixed RHSA-2024:5255
Red Hat Enterprise Linux BaseOS EUS (v.9.2)Fixed RHSA-2024:9497
Red Hat Enterprise Linux BaseOS TUS (v.8.6)Fixed RHSA-2024:5065
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2024:5101
Red Hat Enterprise Linux CRB (v. 9)Fixed RHSA-2024:8617
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2024:5102
Red Hat Enterprise Linux NFV (v. 9)Fixed RHSA-2024:8617
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2024:5102
Red Hat Enterprise Linux RT (v. 9)Fixed RHSA-2024:8617
Red Hat Enterprise Linux Real Time EUS (v.9.2)Fixed RHSA-2024:9498
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2)Fixed RHSA-2024:9498
Not affected: 2 products
  • Red Hat Enterprise Linux AppStream EUS (v.9.2)
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-26640
  2. 2026-10-03 Alias added: GHSA-6q28-45j9-263v

References

Patch 6

  • 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