mt76: mt7921: fix kernel panic by accessing unallocated eeprom.data

Description

In the Linux kernel, the following vulnerability has been resolved: mt76: mt7921: fix kernel panic by accessing unallocated eeprom.data The MT7921 driver no longer uses eeprom.data, but the relevant code has not been removed completely since commit 16d98b548365 ("mt76: mt7921: rely on mcu_get_nic_capability"). This could result in potential invalid memory access. To fix the kernel panic issue in mt7921, it is necessary to avoid accessing unallocated eeprom.data which can lead to invalid memory access. Furthermore, it is possible to entirely eliminate the mt7921_mcu_parse_eeprom function and solely depend on mt7921_mcu_parse_response to divide the RxD header. [2.702735] BUG: kernel NULL pointer dereference, address: 0000000000000550 [2.702740] #PF: supervisor write access in kernel mode [2.702741] #PF: error_code(0x0002) - not-present page [2.702743] PGD 0 P4D 0 [2.702747] Oops: 0002 [#1] PREEMPT SMP NOPTI [2.702755] RIP: 0010:mt7921_mcu_parse_response+0x147/0x170 [mt7921_common] [2.702758] RSP: 0018:ffffae7c00fef828 EFLAGS: 00010286 [2.702760] RAX: ffffa367f57be024 RBX: ffffa367cc7bf500 RCX: 0000000000000000 [2.702762] RDX: 0000000000000550 RSI: 0000000000000000 RDI: ffffa367cc7bf500 [2.702763] RBP: ffffae7c00fef840 R08: ffffa367cb167000 R09: 0000000000000005 [2.702764] R10: 0000000000000000 R11: ffffffffc04702e4 R12: ffffa367e8329f40 [2.702766] R13: 0000000000000000 R14: 0000000000000001 R15: ffffa367e8329f40 [2.702768] FS: 000079ee6cf20c40(0000) GS:ffffa36b2f940000(0000) knlGS:0000000000000000 [2.702769] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [2.702775] CR2: 0000000000000550 CR3: 00000001233c6004 CR4: 0000000000770ee0 [2.702776] PKRU: 55555554 [2.702777] Call Trace: [2.702782] mt76_mcu_skb_send_and_get_msg+0xc3/0x11e [mt76 <HASH:1bc4 5>] [2.702785] mt7921_run_firmware+0x241/0x853 [mt7921_common <HASH:6a2f 6>] [2.702789] mt7921e_mcu_init+0x2b/0x56 [mt7921e <HASH:d290 7>] [2.702792] mt7921_register_device+0x2eb/0x5a5 [mt7921_common <HASH:6a2f 6>] [2.702795] ? mt7921_irq_tasklet+0x1d4/0x1d4 [mt7921e <HASH:d290 7>] [2.702797] mt7921_pci_probe+0x2d6/0x319 [mt7921e <HASH:d290 7>] [2.702799] pci_device_probe+0x9f/0x12a

Scores

EPSS (exploitation in 30 days)

0.16% · top 94% of all CVEs (5 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.

Affected products

• Linux · Linux

  • affected 16d98b548365fcd6fc3fe2e1ae73c9e3cc5ee43d – < 11181b6c8641cd417935b76ea997d0169f2db262
  • affected 16d98b548365fcd6fc3fe2e1ae73c9e3cc5ee43d – < c8ba6780c65f681d217de79e17d63d5d538a239f
  • affected 16d98b548365fcd6fc3fe2e1ae73c9e3cc5ee43d – < ec4d97e8eddcfa9f63f2f62adec5fb4f941ba2ef
  • affected 16d98b548365fcd6fc3fe2e1ae73c9e3cc5ee43d – < 12db28c3ef31f719bd18fa186a40bb152e6a527c

• Linux · Linux

  • affected 5.16
  • unaffected < 5.16
  • unaffected 6.1.28 – ≤ 6.1.*
  • unaffected 6.2.15 – ≤ 6.2.*
  • unaffected 6.3.2 – ≤ 6.3.*
  • unaffected 6.4 – ≤ *

References (4)

• https://git.kernel.org/stable/c/11181b6c8641cd417935b76ea997d0169f2db262 (opens in a new tab)
• https://git.kernel.org/stable/c/c8ba6780c65f681d217de79e17d63d5d538a239f (opens in a new tab)
• https://git.kernel.org/stable/c/ec4d97e8eddcfa9f63f2f62adec5fb4f941ba2ef (opens in a new tab)
• https://git.kernel.org/stable/c/12db28c3ef31f719bd18fa186a40bb152e6a527c (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2023-53232](https://trackcve.app/badge/CVE-2023-53232.svg)](https://trackcve.app/cve/CVE-2023-53232)

Record last updated 5 Nov 2026, 20:21 UTC.