CVE-2026-74557

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74557", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.916Z", "datePublished": "2026-08-15T12:28:01.988Z", "dateUpdated": "2026-10-16T19:05:55.724Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:38:59.951Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: libiscsi: Fix stale-data leak into the SCSI sense buffer\n\niscsi_scsi_cmd_rsp() copies the sense data of a SCSI Response from the\ntarget-supplied data segment. The segment carries a 2-byte sense length\nfollowed by the sense bytes, so it must hold 2 + senselen bytes, but the\nbounds check only requires datalen >= senselen:\n\n\tsenselen = get_unaligned_be16(data);\n\tif (datalen < senselen)\n\t\tgoto invalid_datalen;\n\tmemcpy(sc->sense_buffer, data + 2,\n\t min_t(uint16_t, senselen, SCSI_SENSE_BUFFERSIZE));\n\nA target that returns a SCSI Response whose datalen equals senselen\n(with senselen <= SCSI_SENSE_BUFFERSIZE) makes the memcpy() from data +\n2 read up to two bytes past the received data. Those bytes are stale\nconn->data contents and end up in the command's sense buffer, which is\nreturned to userspace.\n\nAccount for the 2-byte sense length prefix in the check."}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "baseScore": 7.5, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:N - A remote malicious or compromised iSCSI target can trigger the bug by sending a crafted SCSI Command Response over the standard iSCSI/TCP session to a Linux kernel initiator, with no local access required on the victim host.\nAC:L - The attacker fully controls the response PDU fields (datalen, sense length, CHECK_CONDITION status) and can reliably set datalen equal to senselen so the flawed bounds check passes and stale conn->data bytes are copied into the sense buffer.\nPR:N - Exploitation requires only the ability to act as the iSCSI target on the network; the attacker needs no local account, capabilities, or privileges on the victim system initiating the connection.\nUI:N - Once an iSCSI session exists, the leak is triggered automatically on SCSI command responses with no further victim action; the attacker does not rely on a user opening a file, clicking a link, or performing any interactive step at exploit time.\nS:U - The flaw discloses kernel memory contents into a SCSI sense buffer returned within the same host security domain; it does not cross VM, hypervisor, or IOMMU boundaries and is a standard kernel-to-userspace information leak.\nC:H - The out-of-bounds memcpy reads up to two bytes per response from stale conn->data kernel heap memory into sc->sense_buffer, which is copied to userspace via SCSI completion, ioctl, and BSG paths, enabling repeated kernel information disclosure.\nI:N - The vulnerability is a read-only out-of-bounds memcpy from the receive buffer into the sense buffer; it does not corrupt kernel structures, overwrite memory, or provide a write or code-execution primitive.\nA:N - The bug causes no kernel panic, oops, or hang; invalid responses are handled gracefully and exploitation only leaks data into the sense buffer without disrupting system availability."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/scsi/libiscsi.c"], "versions": [{"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "812f1ae95b22419422972748f173b0916ee4d621", "status": "affected", "versionType": "git"}, {"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "fef6167e8149896cd81bea333fd51b1c91239149", "status": "affected", "versionType": "git"}, {"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "baa04572673125e4d5bc309b4077d1cb46cc78d1", "status": "affected", "versionType": "git"}, {"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "7567f06abdefb1caf2d836107c4d08c5185c650e", "status": "affected", "versionType": "git"}, {"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "60499924faf4ef97e84228c20515218ef121facf", "status": "affected", "versionType": "git"}, {"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "3ef209ca0b4b68c75e9a814d90cc916026b5a6ac", "status": "affected", "versionType": "git"}, {"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "1f07a897d43c63e6c9458bf77450defef39b5833", "status": "affected", "versionType": "git"}, {"version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "98b87885de4b7f605533a2860685f5689fce8e82", "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/scsi/libiscsi.c"], "versions": [{"version": "2.6.18", "status": "affected"}, {"version": "0", "lessThan": "2.6.18", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.265", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.216", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.151", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.103", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.44", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.8", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": 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"versionEndExcluding": "7.1.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.18", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/812f1ae95b22419422972748f173b0916ee4d621"}, {"url": "https://git.kernel.org/stable/c/fef6167e8149896cd81bea333fd51b1c91239149"}, {"url": "https://git.kernel.org/stable/c/baa04572673125e4d5bc309b4077d1cb46cc78d1"}, {"url": "https://git.kernel.org/stable/c/7567f06abdefb1caf2d836107c4d08c5185c650e"}, {"url": "https://git.kernel.org/stable/c/60499924faf4ef97e84228c20515218ef121facf"}, {"url": "https://git.kernel.org/stable/c/3ef209ca0b4b68c75e9a814d90cc916026b5a6ac"}, {"url": "https://git.kernel.org/stable/c/1f07a897d43c63e6c9458bf77450defef39b5833"}, {"url": "https://git.kernel.org/stable/c/98b87885de4b7f605533a2860685f5689fce8e82"}], "title": "scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-74557", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-16T19:00:09.303445Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-16T19:05:55.724Z"}}]}}

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the attacker needs no local account, capabilities, or privileges on the victim system initiating the connection.\nUI:N - Once an iSCSI session exists, the leak is triggered automatically on SCSI command responses with no further victim action; the attacker does not rely on a user opening a file, clicking a link, or performing any interactive step at exploit time.\nS:U - The flaw discloses kernel memory contents into a SCSI sense buffer returned within the same host security domain; it does not cross VM, hypervisor, or IOMMU boundaries and is a standard kernel-to-userspace information leak.\nC:H - The out-of-bounds memcpy reads up to two bytes per response from stale conn->data kernel heap memory into sc->sense_buffer, which is copied to userspace via SCSI completion, ioctl, and BSG paths, enabling repeated kernel information disclosure.\nI:N - The vulnerability is a read-only out-of-bounds memcpy from the receive buffer into the sense buffer; it does not corrupt kernel structures, overwrite memory, or provide a write or code-execution primitive.\nA:N - The bug causes no kernel panic, oops, or hang; invalid responses are handled gracefully and exploitation only leaks data into the sense buffer without disrupting system availability."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "812f1ae95b22419422972748f173b0916ee4d621", "versionType": "git"}, {"status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "fef6167e8149896cd81bea333fd51b1c91239149", "versionType": "git"}, {"status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "baa04572673125e4d5bc309b4077d1cb46cc78d1", "versionType": "git"}, {"status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "7567f06abdefb1caf2d836107c4d08c5185c650e", "versionType": "git"}, {"status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "60499924faf4ef97e84228c20515218ef121facf", "versionType": "git"}, {"status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "3ef209ca0b4b68c75e9a814d90cc916026b5a6ac", "versionType": "git"}, {"status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "1f07a897d43c63e6c9458bf77450defef39b5833", "versionType": "git"}, {"status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "lessThan": "98b87885de4b7f605533a2860685f5689fce8e82", "versionType": "git"}], "programFiles": ["drivers/scsi/libiscsi.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.18"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.18", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.265", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.216", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.183", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.151", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.103", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.44", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.8", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/scsi/libiscsi.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/812f1ae95b22419422972748f173b0916ee4d621"}, {"url": "https://git.kernel.org/stable/c/fef6167e8149896cd81bea333fd51b1c91239149"}, {"url": "https://git.kernel.org/stable/c/baa04572673125e4d5bc309b4077d1cb46cc78d1"}, {"url": "https://git.kernel.org/stable/c/7567f06abdefb1caf2d836107c4d08c5185c650e"}, {"url": "https://git.kernel.org/stable/c/60499924faf4ef97e84228c20515218ef121facf"}, {"url": "https://git.kernel.org/stable/c/3ef209ca0b4b68c75e9a814d90cc916026b5a6ac"}, {"url": "https://git.kernel.org/stable/c/1f07a897d43c63e6c9458bf77450defef39b5833"}, {"url": "https://git.kernel.org/stable/c/98b87885de4b7f605533a2860685f5689fce8e82"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: libiscsi: Fix stale-data leak into the SCSI sense buffer\n\niscsi_scsi_cmd_rsp() copies the sense data of a SCSI Response from the\ntarget-supplied data segment. The segment carries a 2-byte sense length\nfollowed by the sense bytes, so it must hold 2 + senselen bytes, but the\nbounds check only requires datalen >= senselen:\n\n\tsenselen = get_unaligned_be16(data);\n\tif (datalen < senselen)\n\t\tgoto invalid_datalen;\n\tmemcpy(sc->sense_buffer, data + 2,\n\t min_t(uint16_t, senselen, SCSI_SENSE_BUFFERSIZE));\n\nA target that returns a SCSI Response whose datalen equals senselen\n(with senselen <= SCSI_SENSE_BUFFERSIZE) makes the memcpy() from data +\n2 read up to two bytes past the received data. Those bytes are stale\nconn->data contents and end up in the command's sense buffer, which is\nreturned to userspace.\n\nAccount for the 2-byte sense length prefix in the check."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.265", "versionStartIncluding": "2.6.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.216", "versionStartIncluding": "2.6.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.183", "versionStartIncluding": "2.6.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.151", "versionStartIncluding": "2.6.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.103", "versionStartIncluding": "2.6.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.44", "versionStartIncluding": "2.6.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1.8", "versionStartIncluding": "2.6.18"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.2", "versionStartIncluding": "2.6.18"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:38:59.951Z"}}}, "cveMetadata": {"cveId": "CVE-2026-74557", "state": "PUBLISHED", "dateUpdated": "2026-10-16T19:05:55.724Z", "dateReserved": "2026-08-15T05:44:03.916Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-08-15T12:28:01.988Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/scsi/libiscsi.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "812f1ae95b22419422972748f173b0916ee4d621", "status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "versionType": "git"}, {"lessThan": "fef6167e8149896cd81bea333fd51b1c91239149", "status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "versionType": "git"}, {"lessThan": "baa04572673125e4d5bc309b4077d1cb46cc78d1", "status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "versionType": "git"}, {"lessThan": "7567f06abdefb1caf2d836107c4d08c5185c650e", "status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "versionType": "git"}, {"lessThan": "60499924faf4ef97e84228c20515218ef121facf", "status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "versionType": "git"}, {"lessThan": "3ef209ca0b4b68c75e9a814d90cc916026b5a6ac", "status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "versionType": "git"}, {"lessThan": "1f07a897d43c63e6c9458bf77450defef39b5833", "status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "versionType": "git"}, {"lessThan": "98b87885de4b7f605533a2860685f5689fce8e82", "status": "affected", "version": "7996a778ff8c717cb1a7a294475c59cc8f1e9fb8", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/scsi/libiscsi.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.18"}, {"lessThan": "2.6.18", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.265", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.151", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.103", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.44", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: libiscsi: Fix stale-data leak into the SCSI sense buffer\n\niscsi_scsi_cmd_rsp() copies the sense data of a SCSI Response from the\ntarget-supplied data segment. The segment carries a 2-byte sense length\nfollowed by the sense bytes, so it must hold 2 + senselen bytes, but the\nbounds check only requires datalen >= senselen:\n\n\tsenselen = get_unaligned_be16(data);\n\tif (datalen < senselen)\n\t\tgoto invalid_datalen;\n\tmemcpy(sc->sense_buffer, data + 2,\n\t min_t(uint16_t, senselen, SCSI_SENSE_BUFFERSIZE));\n\nA target that returns a SCSI Response whose datalen equals senselen\n(with senselen <= SCSI_SENSE_BUFFERSIZE) makes the memcpy() from data +\n2 read up to two bytes past the received data. Those bytes are stale\nconn->data contents and end up in the command's sense buffer, which is\nreturned to userspace.\n\nAccount for the 2-byte sense length prefix in the check."}], "id": "CVE-2026-74557", "lastModified": "2026-10-16T20:17:37.470", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-74557", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T19:00:09.303445Z", "version": "2.0.3"}}]}, "published": "2026-08-15T13:18:01.160", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1f07a897d43c63e6c9458bf77450defef39b5833"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3ef209ca0b4b68c75e9a814d90cc916026b5a6ac"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/60499924faf4ef97e84228c20515218ef121facf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7567f06abdefb1caf2d836107c4d08c5185c650e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/812f1ae95b22419422972748f173b0916ee4d621"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/98b87885de4b7f605533a2860685f5689fce8e82"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/baa04572673125e4d5bc309b4077d1cb46cc78d1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fef6167e8149896cd81bea333fd51b1c91239149"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer", "id": "2517034", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2517034"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nscsi: libiscsi: Fix stale-data leak into the SCSI sense buffer\niscsi_scsi_cmd_rsp() copies the sense data of a SCSI Response from the\ntarget-supplied data segment. The segment carries a 2-byte sense length\nfollowed by the sense bytes, so it must hold 2 + senselen bytes, but the\nbounds check only requires datalen >= senselen:\nsenselen = get_unaligned_be16(data);\nif (datalen < senselen)\ngoto invalid_datalen;\nmemcpy(sc->sense_buffer, data + 2,\nmin_t(uint16_t, senselen, SCSI_SENSE_BUFFERSIZE));\nA target that returns a SCSI Response whose datalen equals senselen\n(with senselen <= SCSI_SENSE_BUFFERSIZE) makes the memcpy() from data +\n2 read up to two bytes past the received data. Those bytes are stale\nconn->data contents and end up in the command's sense buffer, which is\nreturned to userspace.\nAccount for the 2-byte sense length prefix in the check.", "A flaw was found in the Linux kernel's libiscsi component. An incorrect bounds check in the `iscsi_scsi_cmd_rsp()` function allows a malicious iSCSI target to craft a SCSI Response. This can lead to a read beyond the intended buffer, causing stale connection data to be copied into the SCSI sense buffer and subsequently returned to userspace, potentially disclosing sensitive information."], "name": "CVE-2026-74557", "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74557\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74557\nhttps://lore.kernel.org/linux-cve-announce/2026081551-CVE-2026-74557-6742@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7996a778ff8c717cb1a7a294475c59cc8f1e9fb8,7567f06abdefb1caf2d836107c4d08c5185c650e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7996a778ff8c717cb1a7a294475c59cc8f1e9fb8,60499924faf4ef97e84228c20515218ef121facf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7996a778ff8c717cb1a7a294475c59cc8f1e9fb8,3ef209ca0b4b68c75e9a814d90cc916026b5a6ac)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7996a778ff8c717cb1a7a294475c59cc8f1e9fb8,1f07a897d43c63e6c9458bf77450defef39b5833)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7996a778ff8c717cb1a7a294475c59cc8f1e9fb8,98b87885de4b7f605533a2860685f5689fce8e82)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.18"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.18)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.151,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.103,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.44,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.8,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc6,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T15:00:04.340671+00:00", "updated": "2026-08-21T22:30:17.636415+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}