{"id":"CVE-2026-53178","state":"PUBLISHED","title":"staging: rtl8723bs: rtw_mlme: add bounds checks before ie_length subtraction","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: rtw_mlme: add bounds checks before ie_length subtraction\n\nAdd guards to ensure ie_length is large enough before subtracting\nfixed IE offsets to prevent unsigned integer underflow.","publishedAt":"2026-06-25T08:38:54.018Z","updatedAt":"2026-10-30T12:26:42.902Z","severity":{"score":8.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d3fcee1b78a533c256077f1300dd236801397cf7","status":"affected","lessThan":"18143799ad51a32b1351e4e1591b6285a0a9d7dd","versionType":"git"},{"version":"d3fcee1b78a533c256077f1300dd236801397cf7","status":"affected","lessThan":"8863ac3a4fedf86b0ef5b8ecc37fbaa52f2a8160","versionType":"git"},{"version":"d3fcee1b78a533c256077f1300dd236801397cf7","status":"affected","lessThan":"637e0ea73f690028796ee2fc72a2ac4ec32968c6","versionType":"git"},{"version":"d3fcee1b78a533c256077f1300dd236801397cf7","status":"affected","lessThan":"542d65a6dbd9733baab96313c9fe76a76e93f484","versionType":"git"},{"version":"d3fcee1b78a533c256077f1300dd236801397cf7","status":"affected","lessThan":"88e994c57a79f62d5338231d8d37ee8dd98baffe","versionType":"git"},{"version":"1b786350924cc0fa30d4434470b32f24e8ddd107","status":"affected","versionType":"git"},{"version":"5.10.273","status":"affected","lessThan":"5.11","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/rtl8723bs/core/rtw_mlme.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.13","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/rtl8723bs/core/rtw_mlme.c"]}],"references":["https://git.kernel.org/stable/c/18143799ad51a32b1351e4e1591b6285a0a9d7dd","https://git.kernel.org/stable/c/8863ac3a4fedf86b0ef5b8ecc37fbaa52f2a8160","https://git.kernel.org/stable/c/637e0ea73f690028796ee2fc72a2ac4ec32968c6","https://git.kernel.org/stable/c/542d65a6dbd9733baab96313c9fe76a76e93f484","https://git.kernel.org/stable/c/88e994c57a79f62d5338231d8d37ee8dd98baffe"],"weaknesses":[],"ingestedAt":"2026-10-30T12:44:04.813Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/53xxx/CVE-2026-53178.json","commit":"db8103c5921aac81d5d90efcf3745980dafabf49","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53178","state":"PUBLISHED","datePublished":"2026-06-25T08:38:54.018Z","dateUpdated":"2026-10-30T12:26:42.902Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-06-09T07:44:35.389Z"},"containers":{"cna":{"title":"staging: rtl8723bs: rtw_mlme: add bounds checks before ie_length subtraction","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: rtw_mlme: add bounds checks before ie_length subtraction\n\nAdd guards to ensure ie_length is large enough before subtracting\nfixed IE offsets to prevent unsigned integer underflow."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d3fcee1b78a533c256077f1300dd236801397cf7","status":"affected","lessThan":"18143799ad51a32b1351e4e1591b6285a0a9d7dd","versionType":"git"},{"version":"d3fcee1b78a533c256077f1300dd236801397cf7","status":"affected","lessThan":"8863ac3a4fedf86b0ef5b8ecc37fbaa52f2a8160","versionType":"git"},{"version":"d3fcee1b78a533c256077f1300dd236801397cf7","status":"affected","lessThan":"637e0ea73f690028796ee2fc72a2ac4ec32968c6","versionType":"git"},{"version":"d3fcee1b78a533c256077f1300dd236801397cf7","status":"affected","lessThan":"542d65a6dbd9733baab96313c9fe76a76e93f484","versionType":"git"},{"version":"d3fcee1b78a533c256077f1300dd236801397cf7","status":"affected","lessThan":"88e994c57a79f62d5338231d8d37ee8dd98baffe","versionType":"git"},{"version":"1b786350924cc0fa30d4434470b32f24e8ddd107","status":"affected","versionType":"git"},{"version":"5.10.273","status":"affected","lessThan":"5.11","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/rtl8723bs/core/rtw_mlme.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.52","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.13","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/staging/rtl8723bs/core/rtw_mlme.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/18143799ad51a32b1351e4e1591b6285a0a9d7dd"},{"url":"https://git.kernel.org/stable/c/8863ac3a4fedf86b0ef5b8ecc37fbaa52f2a8160"},{"url":"https://git.kernel.org/stable/c/637e0ea73f690028796ee2fc72a2ac4ec32968c6"},{"url":"https://git.kernel.org/stable/c/542d65a6dbd9733baab96313c9fe76a76e93f484"},{"url":"https://git.kernel.org/stable/c/88e994c57a79f62d5338231d8d37ee8dd98baffe"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","baseScore":8.1,"baseSeverity":"HIGH"},"scenarios":[{"lang":"en","value":"AV:A - The vulnerable rtl8723bs path processes 802.11 beacon/probe response information from nearby WiFi radios during scan/join/roam handling, so the attacker must be within wireless range rather than on an IP network.\nAC:L - An attacker can craft and transmit malformed management-frame data and trigger repeated scan/join candidate processing; no race or hard-to-control memory layout condition is required to reach the vulnerable IE walker.\nPR:N - The over-the-air management frames are processed before any WiFi authentication with the attacker-controlled AP/BSS, so no local or authenticated privileges are required.\nUI:N - Once the interface is scanning or attempting WPS/join/roam, the driver processes received management frames without a per-attack victim action.\nS:U - The impact is within the kernel/driver security authority and does not cross a hypervisor, IOMMU, or separate security scope boundary.\nC:H - The WPS path can underflow the IE length and pass a huge unsigned bound to `rtw_get_wps_ie`, causing an unbounded out-of-bounds kernel memory read.\nI:N - The affected calls only scan/compare IE bytes and do not copy attacker data into an out-of-bounds destination or provide an apparent write primitive.\nA:H - The out-of-bounds kernel read can fault or otherwise destabilize the kernel driver, making a kernel crash/oops a plausible outcome."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:26:42.902Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.0.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.273"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}