CVE-2025-39865

Published Sep 19, 2025

Last updated 3 months ago

CVSS medium 5.5

Overview

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
Source
416baaa9-dc9f-4396-8d5f-8c081fb06d67
NVD status
Analyzed
Products
linux_kernel, debian_linux

Risk scores

CVSS 3.1

Type
Primary
Base score
5.5
Impact score
3.6
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Severity
MEDIUM

Weaknesses

nvd@nist.gov
CWE-476

Social media

Hype score
Not currently trending

  1. 🚨 CISA: Siemens SINEC OS flaws hit industrial networking stacks (patch to v3.3+) CISA’s ICSA-26-043-06 (Feb 12, 2026) warns that Siemens SINEC OS versions before v3.3 are affected by multiple vulnerabilities (incl. CVE-2025-39865 and CVE-2025-59375) that could be abused to

    @ThreatSynop

    12 Feb 2026

    51 Impressions

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Configurations

Related CVEs

  1. In the Linux kernel, the following vulnerability has been resolved: net: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check The same bounds-check bug fixed for NDP16 in the previous patch also exists in cdc_ncm_rx_verify_ndp32(). The DPE array size is validated against the total skb length without accounting for ndpoffset, allowing out-of-bounds reads when the NDP32 is placed near the end of the NTB. Add ndpoffset to the nframes bounds check and use struct_size_t() to express the NDP-plus-DPE-array size more clearly. Compile-tested only.•CVE-2026-23447
  2. In the Linux kernel, the following vulnerability has been resolved: net: usb: aqc111: Do not perform PM inside suspend callback syzbot reports "task hung in rpm_resume" This is caused by aqc111_suspend calling the PM variant of its write_cmd routine. The simplified call trace looks like this: rpm_suspend() usb_suspend_both() - here udev->dev.power.runtime_status == RPM_SUSPENDING aqc111_suspend() - called for the usb device interface aqc111_write32_cmd() usb_autopm_get_interface() pm_runtime_resume_and_get() rpm_resume() - here we call rpm_resume() on our parent rpm_resume() - Here we wait for a status change that will never happen. At this point we block another task which holds rtnl_lock and locks up the whole networking stack. Fix this by replacing the write_cmd calls with their _nopm variants•CVE-2026-23446
  3. In the Linux kernel, the following vulnerability has been resolved: igc: fix page fault in XDP TX timestamps handling If an XDP application that requested TX timestamping is shutting down while the link of the interface in use is still up the following kernel splat is reported: [ 883.803618] [ T1554] BUG: unable to handle page fault for address: ffffcfb6200fd008 ... [ 883.803650] [ T1554] Call Trace: [ 883.803652] [ T1554] <TASK> [ 883.803654] [ T1554] igc_ptp_tx_tstamp_event+0xdf/0x160 [igc] [ 883.803660] [ T1554] igc_tsync_interrupt+0x2d5/0x300 [igc] ... During shutdown of the TX ring the xsk_meta pointers are left behind, so that the IRQ handler is trying to touch them. This issue is now being fixed by cleaning up the stale xsk meta data on TX shutdown. TX timestamps on other queues remain unaffected.•CVE-2026-23445
  4. In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: always free skb on ieee80211_tx_prepare_skb() failure ieee80211_tx_prepare_skb() has three error paths, but only two of them free the skb. The first error path (ieee80211_tx_prepare() returning TX_DROP) does not free it, while invoke_tx_handlers() failure and the fragmentation check both do. Add kfree_skb() to the first error path so all three are consistent, and remove the now-redundant frees in callers (ath9k, mt76, mac80211_hwsim) to avoid double-free. Document the skb ownership guarantee in the function's kdoc.•CVE-2026-23444
  5. In the Linux kernel, the following vulnerability has been resolved: ACPI: processor: Fix previous acpi_processor_errata_piix4() fix After commi f132e089fe89 ("ACPI: processor: Fix NULL-pointer dereference in acpi_processor_errata_piix4()"), device pointers may be dereferenced after dropping references to the device objects pointed to by them, which may cause a use-after-free to occur. Moreover, debug messages about enabling the errata may be printed if the errata flags corresponding to them are unset. Address all of these issues by moving message printing to the points in the code where the errata flags are set.•CVE-2026-23443

References

Sources include official advisories and independent security research.