{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-71100","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-01-13T15:30:19.651Z","datePublished":"2026-01-13T15:34:59.039Z","dateUpdated":"2026-08-05T12:12:05.756Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T12:12:05.756Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtlwifi: 8192cu: fix tid out of range in rtl92cu_tx_fill_desc()\n\nTID getting from ieee80211_get_tid() might be out of range of array size\nof sta_entry->tids[], so check TID is less than MAX_TID_COUNT. Othwerwise,\nUBSAN warn:\n\n UBSAN: array-index-out-of-bounds in drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c:514:30\n index 10 is out of range for type 'rtl_tid_data [9]'"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","baseScore":7.6,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:A - An adjacent Wi-Fi peer can trigger automatic open-mesh peering responses whose category 15 is misinterpreted as a TID, reaching rtl92cu_tx_fill_desc() over the wireless link.\nAC:L - A valid peering-open frame deterministically triggers the vulnerable transmit path; no race or condition outside the attacker's control is required.\nPR:N - The open-mesh path accepts self-protected peering frames from unknown peers and automatically creates an authorized station entry, requiring no credentials or local capabilities.\nUI:N - Once the affected wireless interface is operating, mac80211 processes the attacker's frame and transmits the vulnerable response automatically.\nS:U - The access and resulting effects remain within the host kernel and wireless device security authority, without crossing a virtualization or isolation boundary.\nC:L - The access reads one byte at one of a small number of TID-selected offsets, with TIDs 10 through 15 reaching beyond the tail-allocated driver data; conservatively, this permits only a tightly bounded heap-state oracle rather than arbitrary memory disclosure.\nI:L - The operation cannot overwrite kernel memory or provide an arbitrary-write primitive, but the fetched byte can influence aggregation and RTS descriptor state, supporting limited transmission integrity impact.\nA:H - UBSAN trap or panic-on-warning kernels can oops or panic on the deterministic bounds violation, and an adjacent peer can retrigger it after recovery."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c"],"versions":[{"version":"8ca4cdef93297c9b9bf08da39bc940bd20acbb94","lessThan":"9765d6eb8298b07d499cdf9ef7c237d3540102d6","status":"affected","versionType":"git"},{"version":"8ca4cdef93297c9b9bf08da39bc940bd20acbb94","lessThan":"90a15ff324645aa806d81fa349497cd964861b66","status":"affected","versionType":"git"},{"version":"8ca4cdef93297c9b9bf08da39bc940bd20acbb94","lessThan":"dd39edb445f07400e748da967a07d5dca5c5f96e","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/realtek/rtlwifi/rtl8192cu/trx.c"],"versions":[{"version":"6.9","status":"affected"},{"version":"0","lessThan":"6.9","status":"unaffected","versionType":"semver"},{"version":"6.12.64","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.4","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.12.64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.18.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.9","versionEndExcluding":"6.19"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/9765d6eb8298b07d499cdf9ef7c237d3540102d6"},{"url":"https://git.kernel.org/stable/c/90a15ff324645aa806d81fa349497cd964861b66"},{"url":"https://git.kernel.org/stable/c/dd39edb445f07400e748da967a07d5dca5c5f96e"}],"title":"wifi: rtlwifi: 8192cu: fix tid out of range in rtl92cu_tx_fill_desc()","x_generator":{"engine":"bippy-1.2.0"}}}}