CVE-2024-26640

Aliases:UBUNTU-CVE-2024-26640DEBIAN-CVE-2024-26640
Advisory lineage Upstream: 0 Downstream: 36
Modified
Published: 18 Mar 2024, 10:19
Last modified:05 Aug 2026, 11:26

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
0.24% LOW
0% probability +0.23%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

18 Mar 2024, 10:19
Published
Vulnerability first disclosed
05 Aug 2026, 11:26
Last Modified
Vulnerability information updated

Description

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)

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.24%• Percentile: 15%

Affected Systems

  • debian•linux

    < 5.10.216-1 | < 6.1.82-1 | < 6.7.7-1 | < 6.7.7-1

  • ubuntu•linux

    < 5.4.0-200.220 | < 5.15.0-106.116

  • ubuntu•linux-allwinner-5.19

    all

  • ubuntu•linux-aws

    < 5.4.0-1135.145 | < 5.15.0-1061.67

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.13

    all

  • ubuntu•linux-aws-5.15

    < 5.15.0-1061.67~20.04.1

  • ubuntu•linux-aws-5.19

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1135.145~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-6.2

    all

  • ubuntu•linux-aws-6.5

    all

  • ubuntu•linux-aws-fips

    < 5.4.0-1135.145+fips1 | all | < 5.15.0-1061.67+fips1

  • ubuntu•linux-azure

    all | < 5.4.0-1140.147 | < 5.15.0-1063.72

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.13

    all

  • ubuntu•linux-azure-5.15

    < 5.15.0-1063.72~20.04.1

  • ubuntu•linux-azure-5.19

    all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1140.147~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-6.2

    all

  • ubuntu•linux-azure-6.5

    < 6.5.0-1022.23~22.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all | < 5.15.0-1063.72.1 | all

  • ubuntu•linux-azure-fde-5.19

    all

  • ubuntu•linux-azure-fde-6.2

    all

  • ubuntu•linux-azure-fde-6.8

    all

  • ubuntu•linux-azure-fips

    < 5.4.0-1140.147+fips1 | all | < 5.15.0-1063.72+fips1

  • ubuntu•linux-bluefield

    all | < 5.4.0-1095.102 | < 5.15.0-1043.45

  • ubuntu•linux-fips

    < 5.4.0-1109.119 | all | < 5.15.0-106.116+fips1

  • ubuntu•linux-gcp

    all | < 5.4.0-1139.148 | < 5.15.0-1059.67

  • ubuntu•linux-gcp-5.11

    all

  • ubuntu•linux-gcp-5.13

    all

  • ubuntu•linux-gcp-5.15

    < 5.15.0-1059.67~20.04.1

  • ubuntu•linux-gcp-5.19

    all

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1139.148~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-6.2

    all

  • ubuntu•linux-gcp-6.5

    < 6.5.0-1022.24~22.04.1

  • ubuntu•linux-gcp-fips

    < 5.4.0-1139.148+fips1 | all | < 5.15.0-1059.67+fips1

  • ubuntu•linux-gke

    all | < 5.15.0-1058.63

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-gke-5.15

    all

  • ubuntu•linux-gke-5.4

    all

  • ubuntu•linux-gkeop

    < 5.4.0-1102.106 | < 5.15.0-1044.51

  • ubuntu•linux-gkeop-5.15

    < 5.15.0-1044.51~20.04.1

Showing first 50 affected entries in server-rendered view.

References (30)