CVE-2025-39865

tee: fix NULL pointer dereference in tee_shm_put

State: Published
Severity: Not scored
Published: Sep 19, 2025
Updated: May 23, 2026
Reserved: Apr 16, 2025

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

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	c05d8f66ec3470e5212c4d08c46d6cb5738d600d to before f266188603c34e6e234fb0dfc3185f0ba98d71b7Affected 492eb7afe858d60408b2da09adc78540c4d16543 to before 4377eac565c297fdfccd2f8e9bf94ee84ff6172fAffected dfd0743f1d9ea76931510ed150334d571fbab49d to before 25e315bc8ad363bd1194e49062f183ad4011957eAffected dfd0743f1d9ea76931510ed150334d571fbab49d to before add1ecc8f3ad8df22e3599c5c88d7907cc2a3079Affected dfd0743f1d9ea76931510ed150334d571fbab49d to before 963fca19fe34c496e04f7dd133b807b76a5434caAffected dfd0743f1d9ea76931510ed150334d571fbab49d to before 5e07a4235bb85d9ef664411e4ff4ac34783c18ffAffected dfd0743f1d9ea76931510ed150334d571fbab49d to before e4a718a3a47e89805c3be9d46a84de1949a98d5dAffected 3d556a28bbfe34a80b014db49908b0f1bcb1ae80Affected b4a661b4212b8fac8853ec3b68e4a909dccc88a1Affected 940e68e57ab69248fabba5889e615305789db8a7Affected 5.10.89 to before 5.10.243Affected 5.15.12 to before 5.15.192Affected 4.14.261 to before 4.15Affected 4.19.224 to before 4.20Affected 5.4.170 to before 5.5Affected
LinuxLinux	5.16Affected before 5.16Not affected 5.10.243 through 5.10.Not affected 5.15.192 through 5.15.Not affected 6.1.151 through 6.1.Not affected 6.6.105 through 6.6.Not affected 6.12.46 through 6.12.Not affected 6.16.6 through 6.16.Not affected 6.17 and laterNot affected

Product

Versions

LinuxLinux

c05d8f66ec3470e5212c4d08c46d6cb5738d600d to before f266188603c34e6e234fb0dfc3185f0ba98d71b7Affected
492eb7afe858d60408b2da09adc78540c4d16543 to before 4377eac565c297fdfccd2f8e9bf94ee84ff6172fAffected
dfd0743f1d9ea76931510ed150334d571fbab49d to before 25e315bc8ad363bd1194e49062f183ad4011957eAffected
dfd0743f1d9ea76931510ed150334d571fbab49d to before add1ecc8f3ad8df22e3599c5c88d7907cc2a3079Affected
dfd0743f1d9ea76931510ed150334d571fbab49d to before 963fca19fe34c496e04f7dd133b807b76a5434caAffected
dfd0743f1d9ea76931510ed150334d571fbab49d to before 5e07a4235bb85d9ef664411e4ff4ac34783c18ffAffected
dfd0743f1d9ea76931510ed150334d571fbab49d to before e4a718a3a47e89805c3be9d46a84de1949a98d5dAffected
3d556a28bbfe34a80b014db49908b0f1bcb1ae80Affected
b4a661b4212b8fac8853ec3b68e4a909dccc88a1Affected
940e68e57ab69248fabba5889e615305789db8a7Affected
5.10.89 to before 5.10.243Affected
5.15.12 to before 5.15.192Affected
4.14.261 to before 4.15Affected
4.19.224 to before 4.20Affected
5.4.170 to before 5.5Affected

LinuxLinux

5.16Affected
before 5.16Not affected
5.10.243 through 5.10.*Not affected
5.15.192 through 5.15.*Not affected
6.1.151 through 6.1.*Not affected
6.6.105 through 6.6.*Not affected
6.12.46 through 6.12.*Not affected
6.16.6 through 6.16.*Not affected
6.17 and laterNot affected

References

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