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  4. CVE 2025 39865 tee fix null pointer dereference in teeshmput
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Back to active CVEs
Medium ยท CVSS 5.5CVE-2025-39865

tee: fix NULL pointer dereference in tee_shm_putCVE-2025-39865

Answer in brief

CVE-2025-39865 records a Medium severity (CVSS 5.5) vulnerability in tee: fix NULL pointer dereference in tee_shm_put. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 19, 2025Updated Nov 5, 2026Source checked Nov 5, 2026First seen by HOL Oct 28, 2026Material review Nov 5, 2026
Upstream Advisory

Key facts

Risk
Medium ยท CVSS 5.5
Exploitation
Not marked as known exploited
Affected software
28 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:5.16:-:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:5.16:rc7:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:5.16:rc8:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*Not reportedNot reported
cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=c05d8f66ec3470e5212c4d08c46d6cb5738d600d <f266188603c34e6e234fb0dfc3185f0ba98d71b7 || >=492eb7afe858d60408b2da09adc78540c4d16543 <4377eac565c297fdfccd2f8e9bf94ee84ff6172f || >=dfd0743f1d9ea76931510ed150334d571fbab49d <25e315bc8ad363bd1194e49062f183ad4011957e || >=dfd0743f1d9ea76931510ed150334d571fbab49d <add1ecc8f3ad8df22e3599c5c88d7907cc2a3079 || >=dfd0743f1d9ea76931510ed150334d571fbab49d <963fca19fe34c496e04f7dd133b807b76a5434ca || >=dfd0743f1d9ea76931510ed150334d571fbab49d <5e07a4235bb85d9ef664411e4ff4ac34783c18ff || >=dfd0743f1d9ea76931510ed150334d571fbab49d <e4a718a3a47e89805c3be9d46a84de1949a98d5d || 3d556a28bbfe34a80b014db49908b0f1bcb1ae80 || b4a661b4212b8fac8853ec3b68e4a909dccc88a1 || 940e68e57ab69248fabba5889e615305789db8a7 || >=5.10.89 <5.10.243 || >=5.15.12 <5.15.192 || >=4.14.261 <4.15 || >=4.19.224 <4.20 || >=5.4.170 <5.5f266188603c34e6e234fb0dfc3185f0ba98d71b7, 4377eac565c297fdfccd2f8e9bf94ee84ff6172f, 25e315bc8ad363bd1194e49062f183ad4011957e, add1ecc8f3ad8df22e3599c5c88d7907cc2a3079, 963fca19fe34c496e04f7dd133b807b76a5434ca, 5e07a4235bb85d9ef664411e4ff4ac34783c18ff, e4a718a3a47e89805c3be9d46a84de1949a98d5d, 5.10.243, 5.15.192, 4.15, 4.20, 5.5
Linux/Linuxgeneric5.16Not reported
Siemens/RUGGEDCOM RST2428Pgeneric>=0 <V3.3V3.3
Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familygeneric>=0 <V3.3V3.3
Siemens/SCALANCE XCH328generic>=0 <V3.3V3.3
Siemens/SCALANCE XCM324generic>=0 <V3.3V3.3
Siemens/SCALANCE XCM328generic>=0 <V3.3V3.3
Siemens/SCALANCE XCM332generic>=0 <V3.3V3.3
Siemens/SCALANCE XRH334 (24 V DC, 8xFO, CC)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (230 V AC, 12xFO)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (230 V AC, 8xFO)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (24 V DC, 12xFO)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (24 V DC, 8xFO)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (2x230 V AC, 12xFO)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+)generic>=0 <V3.3V3.3
Siemens/SCALANCE XRM334 (2x230 V AC, 8xFO)generic>=0 <V3.3V3.3
Siemens/SIMATIC CN 4100generic>=0 <V5.0V5.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Siemens/RUGGEDCOM RST2428P.
  2. 2Review the reported fix. Update Linux/Linux to f266188603c34e6e234fb0dfc3185f0ba98d71b7; Siemens/RUGGEDCOM RST2428P to V3.3; Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family to V3.3; Siemens/SCALANCE XCH328 to V3.3; Siemens/SCALANCE XCM324 to V3.3; Siemens/SCALANCE XCM328 to V3.3; Siemens/SCALANCE XCM332 to V3.3; Siemens/SCALANCE XRH334 (24 V DC, 8xFO, CC) to V3.3; Siemens/SCALANCE XRM334 (230 V AC, 12xFO) to V3.3; Siemens/SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+) to V3.3; Siemens/SCALANCE XRM334 (230 V AC, 8xFO) to V3.3; Siemens/SCALANCE XRM334 (24 V DC, 12xFO) to V3.3; Siemens/SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+) to V3.3; Siemens/SCALANCE XRM334 (24 V DC, 8xFO) to V3.3; Siemens/SCALANCE XRM334 (2x230 V AC, 12xFO) to V3.3; Siemens/SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) to V3.3; Siemens/SCALANCE XRM334 (2x230 V AC, 8xFO) to V3.3; Siemens/SIMATIC CN 4100 to V5.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 19, 2025

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 28, 2026

Sources and claim methodology

  • Source referencecert-portal.siemens.com
  • Source referencecert-portal.siemens.com
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencelists.debian.org
  • Source referencelists.debian.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: tee: fix NULL pointer dereference in tee_shm_put tee_shm_put have NULL pointer dereference: __optee_disable_shm_cache --> shm = reg_pair_to_ptr(...);//shm maybe return NULL tee_shm_free(shm); --> tee_shm_put(shm);//crash Add check in tee_shm_put to fix it. panic log: Unable to handle kernel paging request at virtual address 0000000000100cca Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=0000002049d07000 [0000000000100cca] pgd=0000000000000000, p4d=0000000000000000 Internal error: Oops: 0000000096000004 [#1] SMP CPU: 2 PID: 14442 Comm: systemd-sleep Tainted: P OE ------- ---- 6.6.0-39-generic #38 Source Version: 938b255f6cb8817c95b0dd5c8c2944acfce94b07 Hardware name: greatwall GW-001Y1A-FTH, BIOS Great Wall BIOS V3.0 10/26/2022 pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : tee_shm_put+0x24/0x188 lr : tee_shm_free+0x14/0x28 sp : ffff001f98f9faf0 x29: ffff001f98f9faf0 x28: ffff0020df543cc0 x27: 0000000000000000 x26: ffff001f811344a0 x25: ffff8000818dac00 x24: ffff800082d8d048 x23: ffff001f850fcd18 x22: 0000000000000001 x21: ffff001f98f9fb88 x20: ffff001f83e76218 x19: ffff001f83e761e0 x18: 000000000000ffff x17: 303a30303a303030 x16: 0000000000000000 x15: 0000000000000003 x14: 0000000000000001 x13: 0000000000000000 x12: 0101010101010101 x11: 0000000000000001 x10: 0000000000000001 x9 : ffff800080e08d0c x8 : ffff001f98f9fb88 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 x2 : ffff001f83e761e0 x1 : 00000000ffff001f x0 : 0000000000100cca Call trace: tee_shm_put+0x24/0x188 tee_shm_free+0x14/0x28 __optee_disable_shm_cache+0xa8/0x108 optee_shutdown+0x28/0x38 platform_shutdown+0x28/0x40 device_shutdown+0x144/0x2b0 kernel_power_off+0x3c/0x80 hibernate+0x35c/0x388 state_store+0x64/0x80 kobj_attr_store+0x14/0x28 sysfs_kf_write+0x48/0x60 kernfs_fop_write_iter+0x128/0x1c0 vfs_write+0x270/0x370 ksys_write+0x6c/0x100 __arm64_sys_write+0x20/0x30 invoke_syscall+0x4c/0x120 el0_svc_common.constprop.0+0x44/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x24/0x88 el0t_64_sync_handler+0x134/0x150 el0t_64_sync+0x14c/0x15

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-476
Source
CVE List V5
Source checked
Nov 5, 2026
References
11 linked sources
Open source record