# CVE-2025-71139: linux: In the Linux kernel, the following vulnerability has been resolved:  kernel/kexec: fix IMA when allocation happens in...

CVE-2025-71139 is fixed in linux on 1 platform by DEBIAN-CVE-2025-71139 (version 6.18.5-1), released January 14, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-71139
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0012
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 14, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  kernel/kexec: fix IMA when allocation happens in CMA area  *** Bug description ***  When I tested kexec with the latest kernel, I ran into the following warning:  [   40.712410] ------------[ cut here ]------------ [   40.712576] WARNING: CPU: 2 PID: 1562 at kernel/kexec_core.c:1001 kimage_map_segment+0x144/0x198 [...] [   40.816047] Call trace: [   40.818498]  kimage_map_segment+0x144/0x198 (P) [   40.823221]  ima_kexec_post_load+0x58/0xc0 [   40.827246]  __do_sys_kexec_file_load+0x29c/0x368 [...] [   40.855423] ---[ end trace 0000000000000000 ]---  *** How to reproduce ***  This bug is only triggered when the kexec target address is allocated in the CMA area. If no CMA area is reserved in the kernel, use the "cma=" option in the kernel command line to reserve one.  *** Root cause *** The commit 07d24902977e ("kexec: enable CMA based contiguous allocation") allocates the kexec target address directly on the CMA area to avoid copying during the jump. In this case, there is no IND_SOURCE for the kexec segment.  But the current implementation of kimage_map_segment() assumes that IND_SOURCE pages exist and map them into a contiguous virtual address by vmap().  *** Solution *** If IMA segment is allocated in the CMA area, use its page_address() directly.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 6.18.5-1 | [DEBIAN-CVE-2025-71139](https://patchblox.com/security/data/fix/linux/debian-cve-2025-71139.md) | Jan 14, 2026 |

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Data as of 2026-11-09T19:38:12Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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