tee: fix NULL pointer dereference in tee_shm_put
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 3 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.
Summary
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
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.10.89 to before 5.10.243; 5.15.12 to before 5.15.192; 4.14.261 to before 4.15; 4.19.224 to before 4.20; 5.4.170 to before 5.5 | 5.10.243, 5.15.192, 4.15, 4.20, 5.5 | Patch available | CNA |
| Linux | Linux | 5.16 and later | 5.10.243, 5.15.192, 6.1.151, 6.6.105, 6.12.46, 6.16.6, 6.17 | Patch available | CNA |
- Linux VendorLinux Affected 5.10.89 to before 5.10.243; 5.15.12 to before 5.15.192; 4.14.261 to before 4.15; 4.19.224 to before 4.20; 5.4.170 to before 5.5 Fixed in 5.10.243, 5.15.192, 4.15, 4.20, 5.5 Patch available CNA
- Linux VendorLinux Affected 5.16 and later Fixed in 5.10.243, 5.15.192, 6.1.151, 6.6.105, 6.12.46, 6.16.6, 6.17 Patch available CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.14.261 to before 4.15; 4.19.224 to before 4.20; 5.4.170 to before 5.5; 5.10.89 to before 5.10.243; 5.15.12 to before 5.15.192; 5.16.1 to before 6.1.151; 6.2 to before 6.6.105; 6.7 to before 6.12.46; 6.13 to before 6.16.6 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.16:-:*:*:*:*:*:* | 5.16 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.16:rc7:*:*:*:*:*:* | 5.16 rc7 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:5.16:rc8:*:*:*:*:*:* | 5.16 rc8 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* | 6.17 rc1 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* | 6.17 rc2 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:* | 6.17 rc3 | Vulnerable | Linux |
| cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:* | 6.17 rc4 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | Debian |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.14.261 to before 4.15; 4.19.224 to before 4.20; 5.4.170 to before 5.5; 5.10.89 to before 5.10.243; 5.15.12 to before 5.15.192; 5.16.1 to before 6.1.151; 6.2 to before 6.6.105; 6.7 to before 6.12.46; 6.13 to before 6.16.6 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.16:-:*:*:*:*:*:* Versions 5.16 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.16:rc7:*:*:*:*:*:* Versions 5.16 rc7 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:5.16:rc8:*:*:*:*:*:* Versions 5.16 rc8 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* Versions 6.17 rc1 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* Versions 6.17 rc2 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:* Versions 6.17 rc3 Vulnerable ·Linux
- cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:* Versions 6.17 rc4 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.243, 5.15.192, 4.15, 4.20, 5.5
- Fix · CNA Linux (Linux) Fixed in 5.10.243, 5.15.192, 6.1.151, 6.6.105, 6.12.46, 6.16.6, 6.17
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 2 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
Timeline
- 2026-10-02 Threatist record created from CVE-2025-39865
- 2026-10-03 Alias added: GHSA-9xqw-2922-vh7m
- 2026-11-05 CISA SSVC decision points changed
References
Patch 7
- https://git.kernel.org/stable/c/f266188603c34e6e234fb0dfc3185f0ba98d71b7
- https://git.kernel.org/stable/c/4377eac565c297fdfccd2f8e9bf94ee84ff6172f
- https://git.kernel.org/stable/c/25e315bc8ad363bd1194e49062f183ad4011957e
- https://git.kernel.org/stable/c/add1ecc8f3ad8df22e3599c5c88d7907cc2a3079
- https://git.kernel.org/stable/c/963fca19fe34c496e04f7dd133b807b76a5434ca
- https://git.kernel.org/stable/c/5e07a4235bb85d9ef664411e4ff4ac34783c18ff
- https://git.kernel.org/stable/c/e4a718a3a47e89805c3be9d46a84de1949a98d5d
More Linux Kernel vulnerabilities
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- 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
Sources
- CVE-2025-39865 · CVE Program
- CVE-2025-39865 · NVD
- FIRST EPSS
- GHSA-9xqw-2922-vh7m · GitHub Advisory Database · CC BY 4.0
- CVE-2025-39865 · Red Hat security data · CC BY 4.0
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