CVE-2025-22032 (GCVE-0-2025-22032)

Vulnerability from cvelistv5 – Published: 2025-04-16 14:11 – Updated: 2025-10-01 17:05
VLAI?
Title
wifi: mt76: mt7921: fix kernel panic due to null pointer dereference
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: fix kernel panic due to null pointer dereference Address a kernel panic caused by a null pointer dereference in the `mt792x_rx_get_wcid` function. The issue arises because the `deflink` structure is not properly initialized with the `sta` context. This patch ensures that the `deflink` structure is correctly linked to the `sta` context, preventing the null pointer dereference. BUG: kernel NULL pointer dereference, address: 0000000000000400 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 0 UID: 0 PID: 470 Comm: mt76-usb-rx phy Not tainted 6.12.13-gentoo-dist #1 Hardware name: /AMD HUDSON-M1, BIOS 4.6.4 11/15/2011 RIP: 0010:mt792x_rx_get_wcid+0x48/0x140 [mt792x_lib] RSP: 0018:ffffa147c055fd98 EFLAGS: 00010202 RAX: 0000000000000000 RBX: ffff8e9ecb652000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8e9ecb652000 RBP: 0000000000000685 R08: ffff8e9ec6570000 R09: 0000000000000000 R10: ffff8e9ecd2ca000 R11: ffff8e9f22a217c0 R12: 0000000038010119 R13: 0000000080843801 R14: ffff8e9ec6570000 R15: ffff8e9ecb652000 FS: 0000000000000000(0000) GS:ffff8e9f22a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000400 CR3: 000000000d2ea000 CR4: 00000000000006f0 Call Trace: <TASK> ? __die_body.cold+0x19/0x27 ? page_fault_oops+0x15a/0x2f0 ? search_module_extables+0x19/0x60 ? search_bpf_extables+0x5f/0x80 ? exc_page_fault+0x7e/0x180 ? asm_exc_page_fault+0x26/0x30 ? mt792x_rx_get_wcid+0x48/0x140 [mt792x_lib] mt7921_queue_rx_skb+0x1c6/0xaa0 [mt7921_common] mt76u_alloc_queues+0x784/0x810 [mt76_usb] ? __pfx___mt76_worker_fn+0x10/0x10 [mt76] __mt76_worker_fn+0x4f/0x80 [mt76] kthread+0xd2/0x100 ? __pfx_kthread+0x10/0x10 ret_from_fork+0x34/0x50 ? __pfx_kthread+0x10/0x10 ret_from_fork_asm+0x1a/0x30 </TASK> ---[ end trace 0000000000000000 ]---
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 3fe7acc6f4b42ccb1056c5847f18f8eb2fec0834 , < 0cfea60966e4b1239d20bebf02258295e189e82a (git)
Affected: c9e40880416791287292046917e84bcb3a17e2d2 , < effec50381991bc067acf4b3351a57831c74d27f (git)
Affected: 90c10286b176421068b136da51ed83059a68e322 , < 5a57f8eb2a17d469d65cd1186cea26b798221d4a (git)
Affected: 90c10286b176421068b136da51ed83059a68e322 , < adc3fd2a2277b7cc0b61692463771bf9bd298036 (git)
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    Linux Linux Affected: 6.14
Unaffected: 0 , < 6.14 (semver)
Unaffected: 6.12.23 , ≤ 6.12.* (semver)
Unaffected: 6.13.11 , ≤ 6.13.* (semver)
Unaffected: 6.14.2 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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The issue arises because the `deflink` structure\\nis not properly initialized with the `sta` context. This patch ensures that the\\n`deflink` structure is correctly linked to the `sta` context, preventing the\\nnull pointer dereference.\\n\\n BUG: kernel NULL pointer dereference, address: 0000000000000400\\n #PF: supervisor read access in kernel mode\\n #PF: error_code(0x0000) - not-present page\\n PGD 0 P4D 0\\n Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI\\n CPU: 0 UID: 0 PID: 470 Comm: mt76-usb-rx phy Not tainted 6.12.13-gentoo-dist #1\\n Hardware name:  /AMD HUDSON-M1, BIOS 4.6.4 11/15/2011\\n RIP: 0010:mt792x_rx_get_wcid+0x48/0x140 [mt792x_lib]\\n RSP: 0018:ffffa147c055fd98 EFLAGS: 00010202\\n RAX: 0000000000000000 RBX: ffff8e9ecb652000 RCX: 0000000000000000\\n RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8e9ecb652000\\n RBP: 0000000000000685 R08: ffff8e9ec6570000 R09: 0000000000000000\\n R10: ffff8e9ecd2ca000 R11: ffff8e9f22a217c0 R12: 0000000038010119\\n R13: 0000000080843801 R14: ffff8e9ec6570000 R15: ffff8e9ecb652000\\n FS:  0000000000000000(0000) GS:ffff8e9f22a00000(0000) knlGS:0000000000000000\\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 0000000000000400 CR3: 000000000d2ea000 CR4: 00000000000006f0\\n Call Trace:\\n  \u003cTASK\u003e\\n  ? __die_body.cold+0x19/0x27\\n  ? page_fault_oops+0x15a/0x2f0\\n  ? search_module_extables+0x19/0x60\\n  ? search_bpf_extables+0x5f/0x80\\n  ? exc_page_fault+0x7e/0x180\\n  ? asm_exc_page_fault+0x26/0x30\\n  ? mt792x_rx_get_wcid+0x48/0x140 [mt792x_lib]\\n  mt7921_queue_rx_skb+0x1c6/0xaa0 [mt7921_common]\\n  mt76u_alloc_queues+0x784/0x810 [mt76_usb]\\n  ? __pfx___mt76_worker_fn+0x10/0x10 [mt76]\\n  __mt76_worker_fn+0x4f/0x80 [mt76]\\n  kthread+0xd2/0x100\\n  ? __pfx_kthread+0x10/0x10\\n  ret_from_fork+0x34/0x50\\n  ? __pfx_kthread+0x10/0x10\\n  ret_from_fork_asm+0x1a/0x30\\n  \u003c/TASK\u003e\\n ---[ end trace 0000000000000000 ]---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.23\", \"versionStartIncluding\": \"6.12.13\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13.11\", \"versionStartIncluding\": \"6.13.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.14.2\", \"versionStartIncluding\": \"6.14\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.15\", \"versionStartIncluding\": \"6.14\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-26T05:16:59.510Z\"}}}",
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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.