{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53257","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-09-15T14:19:21.850Z","datePublished":"2025-09-15T14:46:29.009Z","dateUpdated":"2026-08-05T09:13:19.341Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-05T09:13:19.341Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: check S1G action frame size\n\nBefore checking the action code, check that it even\nexists in the frame."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","baseScore":7.1,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:A - The bug is in ieee80211_rx_h_action() on the mac80211 Wi‑Fi RX path; an attacker on the same radio/LAN segment injects a truncated S1G action frame (category present, action_code missing). Wi‑Fi frame injection is Adjacent, not Network or Local.\nAC:L - The attacker fully controls frame length and contents and can deterministically send a 25-byte action frame (IEEE80211_MIN_ACTION_SIZE) with WLAN_CATEGORY_S1G; no race or attacker-uncontrollable condition is required.\nPR:N - S1G action frames are non-robust, so MFP does not require encryption; an unauthenticated adjacent peer who is associated (e.g. open AP) or who spoofs an associated STA’s MAC reaches the path with no local account or capability on the victim.\nUI:N - The attacker triggers the path solely by transmitting the crafted management frame; no separate victim action (mount, open, click) is required beyond the interface already receiving Wi‑Fi frames.\nS:U - The out-of-bounds/uninit read and any resulting fault stay inside the host kernel mac80211 authority and do not cross a VM, IOMMU, or sandbox boundary.\nC:L - The defect is a strictly 1-byte out-of-bounds/uninit read of s1g.action_code past skb->len into adjacent/uninitialized skb memory, used only in a switch; that is a small bounded read, not an arbitrary read primitive, so Confidentiality is Low.\nI:N - This is a read-only length-check omission with no OOB write, UAF, or control-flow write primitive; the TWT follow-on path has its own length checks and does not grant an integrity or code-execution primitive.\nA:H - Reading past valid frame data into invalid/unmapped skb memory can oops/panic the kernel (as reflected by the KMSAN finding that motivated the fix), and an adjacent peer can trigger this repeatedly, so Availability is High."}]}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/rx.c"],"versions":[{"version":"f5a4c24e689f54e66201f04d343bdd2e8a1d7923","lessThan":"fedd9377dd9c71a950d432fbe1628eebfbed70a1","status":"affected","versionType":"git"},{"version":"f5a4c24e689f54e66201f04d343bdd2e8a1d7923","lessThan":"7ae7a1378a119780c8c17a6b5fc03011c3bb7029","status":"affected","versionType":"git"},{"version":"f5a4c24e689f54e66201f04d343bdd2e8a1d7923","lessThan":"5e030a2509be72b452b6f4a800786d43229414db","status":"affected","versionType":"git"},{"version":"f5a4c24e689f54e66201f04d343bdd2e8a1d7923","lessThan":"19e4a47ee74718a22e963e8a647c8c3bfe8bb05c","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/rx.c"],"versions":[{"version":"5.15","status":"affected"},{"version":"0","lessThan":"5.15","status":"unaffected","versionType":"semver"},{"version":"5.15.133","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.55","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.5.5","lessThanOrEqual":"6.5.*","status":"unaffected","versionType":"semver"},{"version":"6.6","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":"5.15","versionEndExcluding":"5.15.133"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.5.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/fedd9377dd9c71a950d432fbe1628eebfbed70a1"},{"url":"https://git.kernel.org/stable/c/7ae7a1378a119780c8c17a6b5fc03011c3bb7029"},{"url":"https://git.kernel.org/stable/c/5e030a2509be72b452b6f4a800786d43229414db"},{"url":"https://git.kernel.org/stable/c/19e4a47ee74718a22e963e8a647c8c3bfe8bb05c"}],"title":"wifi: mac80211: check S1G action frame size","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.8,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"id":"CVE-2023-53257","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-01-14T18:02:03.384462Z"}}}],"problemTypes":[{"descriptions":[{"lang":"en","type":"CWE","description":"CWE-noinfo Not enough information"}]}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-01-14T18:02:52.955Z"}}]}}