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TI-2025-25721 Aliases CVE-2025-38383GHSA-pqhv-fc7x-qjmr

mm/vmalloc: fix data race in show_numa_info()

Priority LOW 21CWE-362Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 10 fixed, 1 without a fix

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

Summary

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: fix data race in show_numa_info() The following data-race was found in show_numa_info(): ================================================================== BUG: KCSAN: data-race in vmalloc_info_show / vmalloc_info_show read to 0xffff88800971fe30 of 4 bytes by task 8289 on cpu 0: show_numa_info mm/vmalloc.c:4936 [inline] vmalloc_info_show+0x5a8/0x7e0 mm/vmalloc.c:5016 seq_read_iter+0x373/0xb40 fs/seq_file.c:230 proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299 .... write to 0xffff88800971fe30 of 4 bytes by task 8287 on cpu 1: show_numa_info mm/vmalloc.c:4934 [inline] vmalloc_info_show+0x38f/0x7e0 mm/vmalloc.c:5016 seq_read_iter+0x373/0xb40 fs/seq_file.c:230 proc_reg_read_iter+0x11e/0x170 fs/proc/inode.c:299 .... value changed: 0x0000008f -> 0x00000000 ================================================================== According to this report,there is a read/write data-race because m->private is accessible to multiple CPUs. To fix this, instead of allocating the heap in proc_vmalloc_init() and passing the heap address to m->private, vmalloc_info_show() should allocate the heap.

Why it matters now

EPSS 0.00134 2nd percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.12.37, 6.15.6, 6.16Red Hat: 2 advisoriesRed Hat: 10 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
LinuxLinux6.9 and later6.12.37, 6.15.6, 6.16Patch availableCNA
  • Linux VendorLinux Affected 6.9 and later Fixed in 6.12.37, 6.15.6, 6.16 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*6.9 to before 6.12.37; 6.13 to before 6.15.6VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 6.9 to before 6.12.37; 6.13 to before 6.15.6 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 6.12.37, 6.15.6, 6.16

Red Hat 2 advisories

  • RHSA-2026:2761 Released 2026-02-16 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kernel-64k-debug-devel-6.12.0-55.60.1.el10_0, kernel-64k-debug-devel-matched-6.12.0-55.60.1.el10_0, kernel-64k-devel-6.12.0-55.60.1.el10_0 +12
    • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kernel-6.12.0-55.60.1.el10_0, kernel-64k-6.12.0-55.60.1.el10_0, kernel-64k-core-6.12.0-55.60.1.el10_0 +28
    • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kernel-tools-libs-devel-6.12.0-55.60.1.el10_0, libperf-6.12.0-55.60.1.el10_0
    • Red Hat Enterprise Linux Real Time EUS (v. 10.0) kernel-rt-6.12.0-55.60.1.el10_0, kernel-rt-64k-6.12.0-55.60.1.el10_0, kernel-rt-64k-core-6.12.0-55.60.1.el10_0 +21
    • Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0) kernel-rt-6.12.0-55.60.1.el10_0, kernel-rt-core-6.12.0-55.60.1.el10_0, kernel-rt-debug-6.12.0-55.60.1.el10_0 +11
  • RHSA-2026:1178 Released 2026-01-26 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 10) kernel-64k-debug-devel-6.12.0-124.29.1.el10_1, kernel-64k-debug-devel-matched-6.12.0-124.29.1.el10_1, kernel-64k-devel-6.12.0-124.29.1.el10_1 +12
    • Red Hat Enterprise Linux BaseOS (v. 10) kernel-6.12.0-124.29.1.el10_1, kernel-64k-6.12.0-124.29.1.el10_1, kernel-64k-core-6.12.0-124.29.1.el10_1 +29
    • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kernel-tools-libs-devel-6.12.0-124.29.1.el10_1, libperf-6.12.0-124.29.1.el10_1
    • Red Hat Enterprise Linux Real Time (v. 10) kernel-rt-6.12.0-124.29.1.el10_1, kernel-rt-64k-6.12.0-124.29.1.el10_1, kernel-rt-64k-core-6.12.0-124.29.1.el10_1 +21
    • Red Hat Enterprise Linux Real Time for NFV (v. 10) kernel-rt-6.12.0-124.29.1.el10_1, kernel-rt-core-6.12.0-124.29.1.el10_1, kernel-rt-debug-6.12.0-124.29.1.el10_1 +9

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 AppStream (v. 10)Fixed RHSA-2026:1178
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:2761
Red Hat Enterprise Linux BaseOS (v. 10)Fixed RHSA-2026:1178
Red Hat Enterprise Linux BaseOS EUS (v. 10.0)Fixed RHSA-2026:2761
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)Fixed RHSA-2026:1178
Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)Fixed RHSA-2026:2761
Red Hat Enterprise Linux Real Time (v. 10)Fixed RHSA-2026:1178
Red Hat Enterprise Linux Real Time EUS (v. 10.0)Fixed RHSA-2026:2761
Red Hat Enterprise Linux Real Time for NFV (v. 10)Fixed RHSA-2026:1178
Red Hat Enterprise Linux Real Time for NFV EUS (v. 10.0)Fixed RHSA-2026:2761
Not affected: 3 products
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-38383
  2. 2026-10-03 Alias added: GHSA-pqhv-fc7x-qjmr

References

Patch 3

  • 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