{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-68256", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-16T13:41:40.267Z", "datePublished": "2025-12-16T14:44:58.829Z", "dateUpdated": "2026-08-05T12:10:31.326Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:10:31.326Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser\n\nThe Information Element (IE) parser rtw_get_ie() trusted the length\nbyte of each IE without validating that the IE body (len bytes after\nthe 2-byte header) fits inside the remaining frame buffer. A malformed\nframe can advertise an IE length larger than the available data, causing\nthe parser to increment its pointer beyond the buffer end. This results\nin out-of-bounds reads or, depending on the pattern, an infinite loop.\n\nFix by validating that (offset + 2 + len) does not exceed the limit\nbefore accepting the IE or advancing to the next element.\n\nThis prevents OOB reads and ensures the parser terminates safely on\nmalformed frames." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - Attacker-controlled 802.11 management frames reach the parser over the air, requiring only proximity to the affected RTL8723BS WiFi device.\nAC:L - The malformed IE length is directly attacker-controlled and deterministically triggers the faulty parsing without a race or condition outside the attacker’s influence.\nPR:N - Beacons and authentication frames are processed before authentication, while the 802.11w path performs the dangerous write before MIC verification.\nUI:N - An active, scanning, connecting, or connected wireless interface automatically processes injected frames without victim action.\nS:U - The vulnerability compromises the host kernel containing the affected driver and does not cross a separate virtualization or hardware security boundary.\nC:H - The unchecked length can drive substantial out-of-bounds reads of kernel memory through downstream callers, including copying out-of-frame data into retransmitted authentication state.\nI:H - A truncated Challenge IE can drive a 255-byte memcpy into a 128-byte MLME buffer, and a malformed MMIE can cause an offset-controlled eight-byte heap overwrite before cryptographic verification.\nA:H - The out-of-bounds reads and writes can cause kernel faults or memory corruption, and malformed frames can be injected repeatedly to crash or destabilize the device." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/staging/rtl8723bs/core/rtw_ieee80211.c" ], "versions": [ { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "9829c6e1b2e4180fd18315252ad6faeab6128076", "status": "affected", "versionType": "git" }, { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "b977eb31802817f4a37da95bf16bfdaa1eeb5fc2", "status": "affected", "versionType": "git" }, { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "30c558447e90935f0de61be181bbcedf75952e00", "status": "affected", "versionType": "git" }, { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "a54e2b2db1b7de2e008b4f62eec35aaefcc663c5", "status": "affected", "versionType": "git" }, { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "df191dd9f4c7249d98ada55634fa8ac19089b8cb", "status": "affected", "versionType": "git" }, { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "c0d93d69e1472ba75b78898979b90a98ba2a2501", "status": "affected", "versionType": "git" }, { "version": "554c0a3abf216c991c5ebddcdb2c08689ecd290b", "lessThan": "154828bf9559b9c8421fc2f0d7f7f76b3683aaed", "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/staging/rtl8723bs/core/rtw_ieee80211.c" ], "versions": [ { "version": "4.12", "status": "affected" }, { "version": "0", "lessThan": "4.12", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.203", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.160", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.120", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.62", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17.12", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.1", "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": "4.12", "versionEndExcluding": "5.15.203" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.1.160" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.6.120" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.12.62" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.17.12" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.18.1" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.12", "versionEndExcluding": "6.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9829c6e1b2e4180fd18315252ad6faeab6128076" }, { "url": "https://git.kernel.org/stable/c/b977eb31802817f4a37da95bf16bfdaa1eeb5fc2" }, { "url": "https://git.kernel.org/stable/c/30c558447e90935f0de61be181bbcedf75952e00" }, { "url": "https://git.kernel.org/stable/c/a54e2b2db1b7de2e008b4f62eec35aaefcc663c5" }, { "url": "https://git.kernel.org/stable/c/df191dd9f4c7249d98ada55634fa8ac19089b8cb" }, { "url": "https://git.kernel.org/stable/c/c0d93d69e1472ba75b78898979b90a98ba2a2501" }, { "url": "https://git.kernel.org/stable/c/154828bf9559b9c8421fc2f0d7f7f76b3683aaed" } ], "title": "staging: rtl8723bs: fix out-of-bounds read in rtw_get_ie() parser", "x_generator": { "engine": "bippy-1.2.0" } } } }