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TI-2024-32021 Aliases CVE-2024-47745GHSA-qpxg-4f92-ww23

mm: call the security_mmap_file() LSM hook in remap_file_pages()

Priority LOW 34CWE-670Published · 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: 15 fixed, 4 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: 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]

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00284 20th percentileScored 2026-11-07
Fix Partial Linux (Linux): 3.17, 6.1.120, 6.6.54 +3Red Hat: 4 advisoriesRed Hat: 15 fixed, 4 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
LinuxLinux3.16.59 to before 3.173.17Patch availableCNA
LinuxLinux4.0 and later6.1.120, 6.6.54, 6.10.13, 6.11.2, 6.12Patch availableCNA
  • Linux VendorLinux Affected 3.16.59 to before 3.17 Fixed in 3.17 Patch available CNA
  • Linux VendorLinux Affected 4.0 and later Fixed in 6.1.120, 6.6.54, 6.10.13, 6.11.2, 6.12 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 6.1.120; 6.2 to before 6.6.54; 6.7 to before 6.10.13; 6.11 to before 6.11.2VulnerableLinux
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 6.1.120; 6.2 to before 6.6.54; 6.7 to before 6.10.13; 6.11 to before 6.11.2 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 3.17
  • Fix · CNA Linux (Linux) Fixed in 6.1.120, 6.6.54, 6.10.13, 6.11.2, 6.12

Red Hat 4 advisories

  • RHSA-2025:7683 Released 2025-05-15 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.117.1.el9_2
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.117.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.117.1.el9_2, kernel-64k-devel-5.14.0-284.117.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.117.1.el9_2, kernel-5.14.0-284.117.1.el9_2, kernel-64k-5.14.0-284.117.1.el9_2 +29
  • RHSA-2025:7676 Released 2025-05-15 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.117.1.rt14.402.el9_2, kernel-rt-core-5.14.0-284.117.1.rt14.402.el9_2, kernel-rt-debug-5.14.0-284.117.1.rt14.402.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.117.1.rt14.402.el9_2, kernel-rt-core-5.14.0-284.117.1.rt14.402.el9_2, kernel-rt-debug-5.14.0-284.117.1.rt14.402.el9_2 +11
  • RHSA-2025:6966 Released 2025-05-13 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-570.12.1.el9_6, kernel-64k-debug-devel-matched-5.14.0-570.12.1.el9_6, kernel-64k-devel-5.14.0-570.12.1.el9_6 +12
    • Red Hat Enterprise Linux BaseOS (v. 9) kernel-5.14.0-570.12.1.el9_6, kernel-64k-5.14.0-570.12.1.el9_6, kernel-64k-core-5.14.0-570.12.1.el9_6 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-570.12.1.el9_6, libperf-5.14.0-570.12.1.el9_6
    • Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-570.12.1.el9_6, kernel-rt-64k-5.14.0-570.12.1.el9_6, kernel-rt-64k-core-5.14.0-570.12.1.el9_6 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-570.12.1.el9_6, kernel-rt-core-5.14.0-570.12.1.el9_6, kernel-rt-debug-5.14.0-570.12.1.el9_6 +11
Show 1 more Red Hat advisories
  • RHSA-2025:4509 Released 2025-05-06 · Red Hat rating Important
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.4) kernel-tools-libs-devel-5.14.0-427.67.1.el9_4, libperf-5.14.0-427.67.1.el9_4
    • Red Hat Enterprise Linux AppStream EUS (v.9.4) kernel-64k-debug-devel-5.14.0-427.67.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.67.1.el9_4, kernel-64k-devel-5.14.0-427.67.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS EUS (v.9.4) bpftool-7.3.0-427.67.1.el9_4, kernel-5.14.0-427.67.1.el9_4, kernel-64k-5.14.0-427.67.1.el9_4 +29
    • Red Hat Enterprise Linux Real Time EUS (v.9.4) kernel-rt-5.14.0-427.67.1.el9_4, kernel-rt-core-5.14.0-427.67.1.el9_4, kernel-rt-debug-5.14.0-427.67.1.el9_4 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4) kernel-rt-5.14.0-427.67.1.el9_4, kernel-rt-core-5.14.0-427.67.1.el9_4, kernel-rt-debug-5.14.0-427.67.1.el9_4 +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 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 9AffectedNo fix planned: Will not fix
Red Hat CodeReady Linux Builder EUS (v.9.2)Fixed RHSA-2025:7683
Red Hat CodeReady Linux Builder EUS (v.9.4)Fixed RHSA-2025:4509
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2025:6966
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2025:7683
Red Hat Enterprise Linux AppStream EUS (v.9.4)Fixed RHSA-2025:4509
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2025:6966
Red Hat Enterprise Linux BaseOS EUS (v.9.2)Fixed RHSA-2025:7683
Red Hat Enterprise Linux BaseOS EUS (v.9.4)Fixed RHSA-2025:4509
Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)Fixed RHSA-2025:6966
Red Hat Enterprise Linux Real Time (v. 9)Fixed RHSA-2025:6966
Red Hat Enterprise Linux Real Time EUS (v.9.2)Fixed RHSA-2025:7676
Red Hat Enterprise Linux Real Time EUS (v.9.4)Fixed RHSA-2025:4509
Red Hat Enterprise Linux Real Time for NFV (v. 9)Fixed RHSA-2025:6966
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2)Fixed RHSA-2025:7676
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4)Fixed RHSA-2025:4509

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-47745
  2. 2026-10-03 Alias added: GHSA-qpxg-4f92-ww23

References

Patch 5

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