{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68156", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.371Z", "datePublished": "2026-08-10T11:59:22.514Z", "dateUpdated": "2026-08-10T11:59:22.514Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-10T11:59:22.514Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: refresh auth->authorizer_buf{,_len} after authorizer update\n\nceph_x_create_authorizer() caches au->buf->vec.iov_base and\nau->buf->vec.iov_len in struct ceph_auth_handshake. These\ncached values are then used by the messenger connect code when\nsending the authorizer.\n\nceph_x_update_authorizer() can rebuild the authorizer when a newer\nservice ticket is available. If the rebuilt authorizer no longer\nfits in the existing buffer, ceph_x_build_authorizer() drops its\nreference to au->buf and allocates a new one. If this is the final\nreference, ceph_buffer_put() frees the old ceph_buffer and its\nvec.iov_base, but auth->authorizer_buf still points at that freed\nmemory.\n\nA subsequent msgr1 reconnect can therefore queue the stale pointer\nand trigger a KASAN slab-use-after-free in _copy_from_iter() while\ntcp_sendmsg() copies the authorizer.\n\nRefresh auth->authorizer_buf and auth->authorizer_buf_len after a\nsuccessful authorizer rebuild so the messenger sends the current\nbuffer."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ceph/auth_x.c"], "versions": [{"version": "0bed9b5c523d577378b6f83eab5835fe30c27208", "lessThan": "9d37aec9ffe4e743dabc3f84502e9723e17a30d4", "status": "affected", "versionType": "git"}, {"version": "0bed9b5c523d577378b6f83eab5835fe30c27208", "lessThan": "75e82e8944ac1efe9fdb88bd2f14d9a031282bdf", "status": "affected", "versionType": "git"}, {"version": "0bed9b5c523d577378b6f83eab5835fe30c27208", "lessThan": "0060ec912292a550198d8d18ac95b433c92a7091", "status": "affected", "versionType": "git"}, {"version": "0bed9b5c523d577378b6f83eab5835fe30c27208", "lessThan": "5ecfcd5c05866f185357700b81b461dae4f5ebb2", "status": "affected", "versionType": "git"}, {"version": "0bed9b5c523d577378b6f83eab5835fe30c27208", "lessThan": "937d61f86d377a3aa578adae7a3dfcecdddf9d89", "status": "affected", "versionType": "git"}, {"version": "29c65a277a64645af853e8c9a9b3dda0ddc421e0", "status": "affected", "versionType": "git"}, {"version": "d2c7223497cf8228416c70e3f4238ddd6c5bdf3c", "status": "affected", "versionType": "git"}, {"version": "3.4.50", "lessThan": "3.5", "status": "affected", "versionType": "semver"}, {"version": "3.9.7", "lessThan": "3.10", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ceph/auth_x.c"], "versions": [{"version": "3.10", "status": "affected"}, {"version": "0", "lessThan": "3.10", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2-rc5", "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": "3.10", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.10", "versionEndExcluding": "7.2-rc5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.4.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.9.7"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9d37aec9ffe4e743dabc3f84502e9723e17a30d4"}, {"url": "https://git.kernel.org/stable/c/75e82e8944ac1efe9fdb88bd2f14d9a031282bdf"}, {"url": "https://git.kernel.org/stable/c/0060ec912292a550198d8d18ac95b433c92a7091"}, {"url": "https://git.kernel.org/stable/c/5ecfcd5c05866f185357700b81b461dae4f5ebb2"}, {"url": "https://git.kernel.org/stable/c/937d61f86d377a3aa578adae7a3dfcecdddf9d89"}], "title": "libceph: refresh auth->authorizer_buf{,_len} after authorizer update", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0bed9b5c523d577378b6f83eab5835fe30c27208,9d37aec9ffe4e743dabc3f84502e9723e17a30d4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0bed9b5c523d577378b6f83eab5835fe30c27208,75e82e8944ac1efe9fdb88bd2f14d9a031282bdf)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0bed9b5c523d577378b6f83eab5835fe30c27208,0060ec912292a550198d8d18ac95b433c92a7091)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0bed9b5c523d577378b6f83eab5835fe30c27208,5ecfcd5c05866f185357700b81b461dae4f5ebb2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[0bed9b5c523d577378b6f83eab5835fe30c27208,937d61f86d377a3aa578adae7a3dfcecdddf9d89)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "29c65a277a64645af853e8c9a9b3dda0ddc421e0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "d2c7223497cf8228416c70e3f4238ddd6c5bdf3c"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.4.50,3.5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.9.7,3.10)"}}], "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": "3.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,3.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.6.148,6.6.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.101,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.42,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.1.6,7.1.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc5,*]"}}], "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": "2026-08-10T17:15:02.921049+00:00", "updated": "2026-08-10T19:00:04.866775+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}