{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-53010: ksmbd: fix use-after-free in smb2_open during durable reconnect","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-53010","status":"final","version":"1","initial_release_date":"2026-06-24T16:29:21.211Z","current_release_date":"2026-06-28T06:38:01.524Z","revision_history":[{"date":"2026-06-24T16:29:21.211Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix use-after-free in smb2_open during durable reconnect\n\nIn smb2_open, the call to ksmbd_put_durable_fd(fp) drops the reference\nto the durable file descriptor early during the durable reconnect\nprocess. If an error occurs subsequently (eg, ksmbd_iov_pin_rsp fails)\nor a scavenger accesses the file, it leads to a use-after-free when\naccessing fp properties (eg fp->create_time).\n\nMove the single put to the end of the function below err_out2 so fp\nstays valid until smb2_open returns.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-53010 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-53010"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-53010"},{"category":"external","summary":"git.kernel.org","url":"https://git.kernel.org/stable/c/ce2e164c1c51c3f7813b80f8c926836e896bcbb3"},{"category":"external","summary":"git.kernel.org","url":"https://git.kernel.org/stable/c/97a0cd55283b4e63fd92804da91c8d9896adcad9"},{"category":"external","summary":"git.kernel.org","url":"https://git.kernel.org/stable/c/1baff47b81f94f9231c91236aa511420d0e266b9"}]},"product_tree":{"branches":[{"category":"vendor","name":"Linux","branches":[{"category":"product_name","name":"Linux","branches":[{"category":"product_version_range","name":">=c8efcc786146a951091588e5fa7e3c754850cb3c <ce2e164c1c51c3f7813b80f8c926836e896bcbb3","product":{"name":"Linux Linux >=c8efcc786146a951091588e5fa7e3c754850cb3c <ce2e164c1c51c3f7813b80f8c926836e896bcbb3","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=c8efcc786146a951091588e5fa7e3c754850cb3c <97a0cd55283b4e63fd92804da91c8d9896adcad9","product":{"name":"Linux Linux >=c8efcc786146a951091588e5fa7e3c754850cb3c <97a0cd55283b4e63fd92804da91c8d9896adcad9","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=c8efcc786146a951091588e5fa7e3c754850cb3c <1baff47b81f94f9231c91236aa511420d0e266b9","product":{"name":"Linux Linux >=c8efcc786146a951091588e5fa7e3c754850cb3c <1baff47b81f94f9231c91236aa511420d0e266b9","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"8df4bcdb0a4232192b2445256c39b787d58ef14d","product":{"name":"Linux Linux 8df4bcdb0a4232192b2445256c39b787d58ef14d","product_id":"CSAFPID-4","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=6.6.32 <6.7","product":{"name":"Linux Linux >=6.6.32 <6.7","product_id":"CSAFPID-5","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Linux","branches":[{"category":"product_name","name":"Linux","branches":[{"category":"product_version","name":"6.9","product":{"name":"Linux Linux 6.9","product_id":"CSAFPID-6","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:6.9:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"0","product":{"name":"Linux Linux 0","product_id":"CSAFPID-7","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:6.9:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"6.18.33","product":{"name":"Linux Linux 6.18.33","product_id":"CSAFPID-8","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:6.9:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"7.0.10","product":{"name":"Linux Linux 7.0.10","product_id":"CSAFPID-9","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:6.9:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"7.1","product":{"name":"Linux Linux 7.1","product_id":"CSAFPID-10","product_identification_helper":{"cpe":"cpe:2.3:a:linux:linux:6.9:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-53010","title":"ksmbd: fix use-after-free in smb2_open during durable reconnect","notes":[{"category":"description","text":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix use-after-free in smb2_open during durable reconnect\n\nIn smb2_open, the call to ksmbd_put_durable_fd(fp) drops the reference\nto the durable file descriptor early during the durable reconnect\nprocess. If an error occurs subsequently (eg, ksmbd_iov_pin_rsp fails)\nor a scavenger accesses the file, it leads to a use-after-free when\naccessing fp properties (eg fp->create_time).\n\nMove the single put to the end of the function below err_out2 so fp\nstays valid until smb2_open returns.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6"],"fixed":["CSAFPID-7","CSAFPID-8","CSAFPID-9","CSAFPID-10"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 0, 1baff47b81f94f9231c91236aa511420d0e266b9, 6.7, 6.18.33, 7.0.10, 7.1, 97a0cd55283b4e63fd92804da91c8d9896adcad9, ce2e164c1c51c3f7813b80f8c926836e896bcbb3.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6"]}]}]}