Linux hwe edge: 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… (CVE-2025-38383)
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.
AI Analysis
Technical Summary
CVE-2025-38383 is a vulnerability in the Linux kernel where a data race condition in the vmalloc's show_numa_info function can lead to a denial of service. This vulnerability affects Red Hat Enterprise Linux 10 and related variants. Red Hat has issued a security advisory (RHSA-2026:1178) providing an updated kernel package that fixes this issue. The advisory classifies the severity as moderate and recommends applying the update and rebooting the system to mitigate the vulnerability.
Potential Impact
The vulnerability allows an attacker to cause a denial of service condition on affected systems by exploiting a data race in the kernel's vmalloc subsystem. This could result in system instability or crashes. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released an official security update for the Linux kernel addressing CVE-2025-38383. Users should apply the kernel update provided in advisory RHSA-2026:1178 and reboot their systems to ensure the fix takes effect. Refer to Red Hat's update instructions at https://access.redhat.com/articles/11258 for detailed guidance.
Linux hwe edge: 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… (CVE-2025-38383)
Description
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.
CVSS v3.1
Score 4.7medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-38383 is a vulnerability in the Linux kernel where a data race condition in the vmalloc's show_numa_info function can lead to a denial of service. This vulnerability affects Red Hat Enterprise Linux 10 and related variants. Red Hat has issued a security advisory (RHSA-2026:1178) providing an updated kernel package that fixes this issue. The advisory classifies the severity as moderate and recommends applying the update and rebooting the system to mitigate the vulnerability.
Potential Impact
The vulnerability allows an attacker to cause a denial of service condition on affected systems by exploiting a data race in the kernel's vmalloc subsystem. This could result in system instability or crashes. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released an official security update for the Linux kernel addressing CVE-2025-38383. Users should apply the kernel update provided in advisory RHSA-2026:1178 and reboot their systems to ensure the fix takes effect. Refer to Red Hat's update instructions at https://access.redhat.com/articles/11258 for detailed guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:1178
- Cve Count
- 1
Threat ID: 6a3da1c84853345fc1821608
Added to database: 06/25/2026, 21:46:48 UTC
Last enriched: 06/25/2026, 22:00:49 UTC
Last updated: 09/10/2026, 19:24:56 UTC
Views: 34
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