CVE-2024-26760

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No local access is needed.\nAC:L - The failure path is entered deterministically by choosing a transfer length that exceeds the backing device's max_hw_sectors/max_segments, making the second blk_rq_append_bio() fail; the attacker fully controls this value and can also tune it so bi_max_vecs lands in the range that triggers the invalid kmem_cache_free.\nPR:N - passthrough_parse_cdb() applies no length validation, and an iSCSI initiator needs no secret \u2014 LIO demo mode (generate_node_acls/authentication=0) admits any initiator, and even with ACLs the initiator IQN is a self-declared string, not a credential.\nUI:N - The bug is triggered entirely by an attacker-sent SCSI command processed in the target's command path; no action by any local user or administrator is required.\nS:U - The invalid free and the resulting corruption/oops are confined to the host kernel, which is both the vulnerable and the impacted component; no hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - bvec_free() frees an interior pointer of the kmalloc'd bio into an unrelated biovec kmem_cache, splicing a kmalloc slab onto that cache's freelist and producing cross-cache overlapping allocations that can be groomed into an arbitrary kernel-memory read.\nI:H - The same invalid free is a slab-corruption primitive \u2014 biovec objects handed out over live kmalloc memory give type confusion and a write primitive over adjacent kernel objects, exploitable for control-flow hijack.\nA:H - bio_free() unconditionally dereferences the NULL bio_set via bs->front_pad, producing a WARN plus a guaranteed NULL pointer dereference oops in the target command path on every trigger, repeatable by the remote attacker (immediate panic with panic_on_oops/panic_on_warn)."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/target/target_core_pscsi.c"], "versions": [{"version": "066ff571011d8416e903d3d4f1f41e0b5eb91e1d", "lessThan": "f49b20fd0134da84a6bd8108f9e73c077b7d6231", "status": "affected", "versionType": "git"}, {"version": "066ff571011d8416e903d3d4f1f41e0b5eb91e1d", "lessThan": "4ebc079f0c7dcda1270843ab0f38ab4edb8f7921", "status": "affected", "versionType": "git"}, {"version": "066ff571011d8416e903d3d4f1f41e0b5eb91e1d", "lessThan": "1cfe9489fb563e9a0c9cdc5ca68257a44428c2ec", "status": "affected", "versionType": "git"}, {"version": "066ff571011d8416e903d3d4f1f41e0b5eb91e1d", "lessThan": "de959094eb2197636f7c803af0943cb9d3b35804", "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/target/target_core_pscsi.c"], "versions": [{"version": "5.19", "status": "affected"}, {"version": "0", "lessThan": "5.19", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.80", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.19", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.7.7", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8", "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": "5.19", "versionEndExcluding": "6.1.80"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.6.19"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.7.7"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.8"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/f49b20fd0134da84a6bd8108f9e73c077b7d6231"}, {"url": "https://git.kernel.org/stable/c/4ebc079f0c7dcda1270843ab0f38ab4edb8f7921"}, {"url": "https://git.kernel.org/stable/c/1cfe9489fb563e9a0c9cdc5ca68257a44428c2ec"}, {"url": "https://git.kernel.org/stable/c/de959094eb2197636f7c803af0943cb9d3b35804"}], "title": "scsi: target: pscsi: Fix bio_put() for error case", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:14:13.227Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/f49b20fd0134da84a6bd8108f9e73c077b7d6231", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/4ebc079f0c7dcda1270843ab0f38ab4edb8f7921", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/1cfe9489fb563e9a0c9cdc5ca68257a44428c2ec", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/de959094eb2197636f7c803af0943cb9d3b35804", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-26760", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:51:34.318502Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:14.606Z"}}]}}

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That is not done properly for the error case, hitting WARN and\nNULL pointer dereference in bio_free()."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: scsi: target: pscsi: corrige bio_put() para el caso de error A partir del commit 066ff571011d (\"bloque: convierte bio_kmalloc en un contenedor kmalloc simple\"), una biograf\u00eda asignada por bio_kmalloc() debe ser liberado por bio_uninit() y kfree(). Esto no se hace correctamente en el caso de error, al presionar WARN y desreferenciar el puntero NULL en bio_free()."}], "id": "CVE-2024-26760", "lastModified": "2026-08-04T11:17:01.240", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-26760", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T15:51:34.318502Z", "version": "2.0.3"}}]}, "published": "2024-04-03T17:15:52.367", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1cfe9489fb563e9a0c9cdc5ca68257a44428c2ec"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4ebc079f0c7dcda1270843ab0f38ab4edb8f7921"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/de959094eb2197636f7c803af0943cb9d3b35804"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f49b20fd0134da84a6bd8108f9e73c077b7d6231"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1cfe9489fb563e9a0c9cdc5ca68257a44428c2ec"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/4ebc079f0c7dcda1270843ab0f38ab4edb8f7921"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/de959094eb2197636f7c803af0943cb9d3b35804"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f49b20fd0134da84a6bd8108f9e73c077b7d6231"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: scsi: target: pscsi: Fix bio_put() for error case", "id": "2273202", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2273202"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nscsi: target: pscsi: Fix bio_put() for error case\nAs of commit 066ff571011d (\"block: turn bio_kmalloc into a simple kmalloc\nwrapper\"), a bio allocated by bio_kmalloc() must be freed by bio_uninit()\nand kfree(). That is not done properly for the error case, hitting WARN and\nNULL pointer dereference in bio_free()."], "name": "CVE-2024-26760", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26760\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26760\nhttps://lore.kernel.org/linux-cve-announce/2024040305-CVE-2024-26760-560a@gregkh/T"], "threat_severity": "Low"}

{}