{"id":"CVE-2023-53209","state":"PUBLISHED","title":"wifi: mac80211_hwsim: Fix possible NULL dereference","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: Fix possible NULL dereference\n\nIn a call to mac80211_hwsim_select_tx_link() the sta pointer might\nbe NULL, thus need to check that it is not NULL before accessing it.","publishedAt":"2025-09-15T14:21:37.415Z","updatedAt":"2026-05-11T19:40:23.407Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"86e74a08fecb59985bb2d5fe3e96dc108822a420","status":"affected","lessThan":"d0124848c7940aba73492e282506b32a13f2e30e","versionType":"git"},{"version":"86e74a08fecb59985bb2d5fe3e96dc108822a420","status":"affected","lessThan":"a8a20fed3e05b3a6866c5c58855deaf3c217ccd6","versionType":"git"},{"version":"86e74a08fecb59985bb2d5fe3e96dc108822a420","status":"affected","lessThan":"0cc80943ef518a1c51a1111e9346d1daf11dd545","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.1","versionType":"semver"},{"version":"6.1.42","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.4.7","status":"unaffected","lessThanOrEqual":"6.4.*","versionType":"semver"},{"version":"6.5","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim.c"]}],"references":["https://git.kernel.org/stable/c/d0124848c7940aba73492e282506b32a13f2e30e","https://git.kernel.org/stable/c/a8a20fed3e05b3a6866c5c58855deaf3c217ccd6","https://git.kernel.org/stable/c/0cc80943ef518a1c51a1111e9346d1daf11dd545"],"weaknesses":["CWE-476"],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53209.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53209","state":"PUBLISHED","datePublished":"2025-09-15T14:21:37.415Z","dateUpdated":"2026-05-11T19:40:23.407Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-09-15T13:59:19.068Z"},"containers":{"cna":{"title":"wifi: mac80211_hwsim: Fix possible NULL dereference","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: Fix possible NULL dereference\n\nIn a call to mac80211_hwsim_select_tx_link() the sta pointer might\nbe NULL, thus need to check that it is not NULL before accessing it."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"86e74a08fecb59985bb2d5fe3e96dc108822a420","status":"affected","lessThan":"d0124848c7940aba73492e282506b32a13f2e30e","versionType":"git"},{"version":"86e74a08fecb59985bb2d5fe3e96dc108822a420","status":"affected","lessThan":"a8a20fed3e05b3a6866c5c58855deaf3c217ccd6","versionType":"git"},{"version":"86e74a08fecb59985bb2d5fe3e96dc108822a420","status":"affected","lessThan":"0cc80943ef518a1c51a1111e9346d1daf11dd545","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.1","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.1","versionType":"semver"},{"version":"6.1.42","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.4.7","status":"unaffected","lessThanOrEqual":"6.4.*","versionType":"semver"},{"version":"6.5","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d0124848c7940aba73492e282506b32a13f2e30e"},{"url":"https://git.kernel.org/stable/c/a8a20fed3e05b3a6866c5c58855deaf3c217ccd6"},{"url":"https://git.kernel.org/stable/c/0cc80943ef518a1c51a1111e9346d1daf11dd545"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:40:23.407Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.1.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.4.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1","versionEndExcluding":"6.5"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"id":"CVE-2023-53209","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-01-14T17:48:14.176157Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","lang":"en","type":"CWE","description":"CWE-476 NULL Pointer Dereference"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-14T17:52:56.820Z"}}]}}}