wifi: brcmfmac: Check the return value of of_property_read_string_index()

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-21750
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-02-27 03:15:15 UTC
Updated2026-11-05 21:17:42 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Check the return value of of_property_read_string_index() Somewhen between 6.10 and 6.11 the driver started to crash on my MacBookPro14,3. The property doesn't exist and 'tmp' remains uninitialized, so we pass a random pointer to devm_kstrdup(). The crash I am getting looks like this: BUG: unable to handle page fault for address: 00007f033c669379 PF: supervisor read access in kernel mode PF: error_code(0x0001) - permissions violation PGD 8000000101341067 P4D 8000000101341067 PUD 101340067 PMD 1013bb067 PTE 800000010aee9025 Oops: Oops: 0001 [#1] SMP PTI CPU: 4 UID: 0 PID: 827 Comm: (udev-worker) Not tainted 6.11.8-gentoo #1 Hardware name: Apple Inc. MacBookPro14,3/Mac-551B86E5744E2388, BIOS 529.140.2.0.0 06/23/2024 RIP: 0010:strlen+0x4/0x30 Code: f7 75 ec 31 c0 c3 cc cc cc cc 48 89 f8 c3 cc cc cc cc 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <80> 3f 00 74 14 48 89 f8 48 83 c0 01 80 38 00 75 f7 48 29 f8 c3 cc RSP: 0018:ffffb4aac0683ad8 EFLAGS: 00010202 RAX: 00000000ffffffea RBX: 00007f033c669379 RCX: 0000000000000001 RDX: 0000000000000cc0 RSI: 00007f033c669379 RDI: 00007f033c669379 RBP: 00000000ffffffea R08: 0000000000000000 R09: 00000000c0ba916a R10: ffffffffffffffff R11: ffffffffb61ea260 R12: ffff91f7815b50c8 R13: 0000000000000cc0 R14: ffff91fafefffe30 R15: ffffb4aac0683b30 FS: 00007f033ccbe8c0(0000) GS:ffff91faeed00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f033c669379 CR3: 0000000107b1e004 CR4: 00000000003706f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ? __die+0x23/0x70 ? page_fault_oops+0x149/0x4c0 ? raw_spin_rq_lock_nested+0xe/0x20 ? sched_balance_newidle+0x22b/0x3c0 ? update_load_avg+0x78/0x770 ? exc_page_fault+0x6f/0x150 ? asm_exc_page_fault+0x26/0x30 ? __pfx_pci_conf1_write+0x10/0x10 ? strlen+0x4/0x30 devm_kstrdup+0x25/0x70 brcmf_of_probe+0x273/0x350 [brcmfmac]

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-476

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 29e354ebeeecaee979e6fe22cd6272682d7552c9 af525a8b2ab85291617e79a5bb18bcdcb529e80c git Not specified
CNA Linux Linux affected 29e354ebeeecaee979e6fe22cd6272682d7552c9 c9480e9f2d10135476101619bcbd1c49c15d595f git Not specified
CNA Linux Linux affected 29e354ebeeecaee979e6fe22cd6272682d7552c9 7ef2ea1429684d5cef207519bdf6ce45e50e8ac5 git Not specified
CNA Linux Linux affected 29e354ebeeecaee979e6fe22cd6272682d7552c9 bb8e35e33e79eb8e44396adbc8cb6c8c5f16b731 git Not specified
CNA Linux Linux affected 29e354ebeeecaee979e6fe22cd6272682d7552c9 082d9e263af8de68f0c34f67b251818205160f6e git Not specified
CNA Linux Linux affected 5.9 Not specified
CNA Linux Linux unaffected 5.9 semver Not specified
CNA Linux Linux unaffected 6.1.129 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.78 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.14 6.12.* semver Not specified
CNA Linux Linux unaffected 6.13.3 6.13.* semver Not specified
CNA Linux Linux unaffected 6.14 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/7ef2ea1429684d5cef207519bdf6ce45e50e8ac5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/bb8e35e33e79eb8e44396adbc8cb6c8c5f16b731 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/082d9e263af8de68f0c34f67b251818205160f6e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/af525a8b2ab85291617e79a5bb18bcdcb529e80c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c9480e9f2d10135476101619bcbd1c49c15d595f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2025/03/msg00028.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
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