CVE-2023-53226 (GCVE-0-2023-53226)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:21 – Updated: 2026-08-05 09:13
VLAI
Title
wifi: mwifiex: Fix OOB and integer underflow when rx packets
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: Fix OOB and integer underflow when rx packets Make sure mwifiex_process_mgmt_packet, mwifiex_process_sta_rx_packet and mwifiex_process_uap_rx_packet, mwifiex_uap_queue_bridged_pkt and mwifiex_process_rx_packet not out-of-bounds access the skb->data buffer.
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 17:51 UTC
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6653 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 2dbaf751b1dec3a603130a475f94cc4d3f404362 , < f517c97fc129995de77dd06aa5a74f909ebf568f (git)
Affected: 2dbaf751b1dec3a603130a475f94cc4d3f404362 , < 8824aa4ab62c800f75d96f48e1883a5f56ec5869 (git)
Affected: 2dbaf751b1dec3a603130a475f94cc4d3f404362 , < 29eca8b7863d1d7de6c5b746b374e3487d14f154 (git)
Affected: 2dbaf751b1dec3a603130a475f94cc4d3f404362 , < 3fe3923d092e22d87d1ed03e2729db444b8c1331 (git)
Affected: 2dbaf751b1dec3a603130a475f94cc4d3f404362 , < 7c54b6fc39eb1aac51cf2945f8a25e2a47fdca02 (git)
Affected: 2dbaf751b1dec3a603130a475f94cc4d3f404362 , < 3975e21d4d01efaf0296ded40d11c06589c49245 (git)
Affected: 2dbaf751b1dec3a603130a475f94cc4d3f404362 , < a7300e3800e9fd5405e88ce67709c1a97783b9c8 (git)
Affected: 2dbaf751b1dec3a603130a475f94cc4d3f404362 , < 650d1bc02fba7b42f476d8b6643324abac5921ed (git)
Affected: 2dbaf751b1dec3a603130a475f94cc4d3f404362 , < 11958528161731c58e105b501ed60b83a91ea941 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.7
Unaffected: 0 , < 3.7 (semver)
Unaffected: 4.14.326 , ≤ 4.14.* (semver)
Unaffected: 4.19.295 , ≤ 4.19.* (semver)
Unaffected: 5.4.257 , ≤ 5.4.* (semver)
Unaffected: 5.10.195 , ≤ 5.10.* (semver)
Unaffected: 5.15.132 , ≤ 5.15.* (semver)
Unaffected: 6.1.53 , ≤ 6.1.* (semver)
Unaffected: 6.4.16 , ≤ 6.4.* (semver)
Unaffected: 6.5.3 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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              "value": "AV:A - The vulnerable code processes WiFi RX frames delivered by mwifiex firmware (SDIO/PCIe/USB) into mwifiex_handle_rx_packet and the sta/uap/mgmt RX handlers; exploitation requires being on the same WiFi segment to inject or influence received frames, matching Adjacent for WiFi frame injection.\nAC:L - An adjacent attacker can reliably supply short or malformed RX payloads that yield a small but consistent rx_pkt_length passing the existing offset+length check and hitting the memmove underflow; success does not depend on an uncontrollable race or opaque victim-only state.\nPR:N - Frames are handled in the driver RX path with no host user account, capability, or OS authentication check; a peer on the WiFi link needs no privileges on the target system.\nUI:N - Once the interface is up with management/data RX enabled (common SoftAP, P2P, or station steady state on mwifiex Chromebooks/devices), attacker-controlled RX frames trigger the bug with no further victim action.\nS:U - The OOB read/write corrupts host kernel memory within the same kernel security authority; this is privilege escalation/DoS on the host, not a VM escape or IOMMU boundary cross.\nC:H - Out-of-bounds reads of skb data via unchecked rx_pkt_offset (eth/rfc1042 header access) and memory corruption from the underflowing memmove can be leveraged for arbitrary kernel information disclosure.\nI:H - The pkt_len underflow turns memmove into a large out-of-bounds write (explicitly called an exploitable OOB write on arm64 Chromebooks by the reporter), enabling heap corruption and control-flow hijacking.\nA:H - The same OOB access and corrupted memmove reliably cause kernel oops/panic in the RX path, so availability impact is complete even without a full code-execution exploit."
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}



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