gsd-2024-26800
Vulnerability from gsd
Modified
2024-02-20 06:02
Details
In the Linux kernel, the following vulnerability has been resolved:
tls: fix use-after-free on failed backlog decryption
When the decrypt request goes to the backlog and crypto_aead_decrypt
returns -EBUSY, tls_do_decryption will wait until all async
decryptions have completed. If one of them fails, tls_do_decryption
will return -EBADMSG and tls_decrypt_sg jumps to the error path,
releasing all the pages. But the pages have been passed to the async
callback, and have already been released by tls_decrypt_done.
The only true async case is when crypto_aead_decrypt returns
-EINPROGRESS. With -EBUSY, we already waited so we can tell
tls_sw_recvmsg that the data is available for immediate copy, but we
need to notify tls_decrypt_sg (via the new ->async_done flag) that the
memory has already been released.
Aliases
{ "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2024-26800" ], "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntls: fix use-after-free on failed backlog decryption\n\nWhen the decrypt request goes to the backlog and crypto_aead_decrypt\nreturns -EBUSY, tls_do_decryption will wait until all async\ndecryptions have completed. If one of them fails, tls_do_decryption\nwill return -EBADMSG and tls_decrypt_sg jumps to the error path,\nreleasing all the pages. But the pages have been passed to the async\ncallback, and have already been released by tls_decrypt_done.\n\nThe only true async case is when crypto_aead_decrypt returns\n -EINPROGRESS. With -EBUSY, we already waited so we can tell\ntls_sw_recvmsg that the data is available for immediate copy, but we\nneed to notify tls_decrypt_sg (via the new -\u003easync_done flag) that the\nmemory has already been released.", "id": "GSD-2024-26800", "modified": "2024-02-20T06:02:29.187145Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "cve@kernel.org", "ID": "CVE-2024-26800", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "\u003c", "version_name": "cd1bbca03f3c", "version_value": "f2b85a4cc763" }, { "version_affected": "\u003c", "version_name": "13eca403876b", "version_value": "81be85353b0f" }, { "version_affected": "\u003c", "version_name": "ab6397f072e5", "version_value": "1ac9fb84bc7e" }, { "version_affected": "\u003c", "version_name": "859054147318", "version_value": "13114dc55430" }, { "version_affected": "\u003c", "version_name": "6.6.18", "version_value": "6.6.21" }, { "version_affected": "\u003c", "version_name": "6.7.6", "version_value": "6.7.9" } ] } } ] }, "vendor_name": "Linux" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntls: fix use-after-free on failed backlog decryption\n\nWhen the decrypt request goes to the backlog and crypto_aead_decrypt\nreturns -EBUSY, tls_do_decryption will wait until all async\ndecryptions have completed. If one of them fails, tls_do_decryption\nwill return -EBADMSG and tls_decrypt_sg jumps to the error path,\nreleasing all the pages. But the pages have been passed to the async\ncallback, and have already been released by tls_decrypt_done.\n\nThe only true async case is when crypto_aead_decrypt returns\n -EINPROGRESS. With -EBUSY, we already waited so we can tell\ntls_sw_recvmsg that the data is available for immediate copy, but we\nneed to notify tls_decrypt_sg (via the new -\u003easync_done flag) that the\nmemory has already been released." } ] }, "generator": { "engine": "bippy-5f0117140d9a" }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "references": { "reference_data": [ { "name": "https://git.kernel.org/stable/c/f2b85a4cc763841843de693bbd7308fe9a2c4c89", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/f2b85a4cc763841843de693bbd7308fe9a2c4c89" }, { "name": "https://git.kernel.org/stable/c/81be85353b0f5a7b660635634b655329b429eefe", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/81be85353b0f5a7b660635634b655329b429eefe" }, { "name": "https://git.kernel.org/stable/c/1ac9fb84bc7ecd4bc6428118301d9d864d2a58d1", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/1ac9fb84bc7ecd4bc6428118301d9d864d2a58d1" }, { "name": "https://git.kernel.org/stable/c/13114dc5543069f7b97991e3b79937b6da05f5b0", "refsource": "MISC", "url": "https://git.kernel.org/stable/c/13114dc5543069f7b97991e3b79937b6da05f5b0" } ] } }, "nvd.nist.gov": { "cve": { "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntls: fix use-after-free on failed backlog decryption\n\nWhen the decrypt request goes to the backlog and crypto_aead_decrypt\nreturns -EBUSY, tls_do_decryption will wait until all async\ndecryptions have completed. If one of them fails, tls_do_decryption\nwill return -EBADMSG and tls_decrypt_sg jumps to the error path,\nreleasing all the pages. But the pages have been passed to the async\ncallback, and have already been released by tls_decrypt_done.\n\nThe only true async case is when crypto_aead_decrypt returns\n -EINPROGRESS. With -EBUSY, we already waited so we can tell\ntls_sw_recvmsg that the data is available for immediate copy, but we\nneed to notify tls_decrypt_sg (via the new -\u003easync_done flag) that the\nmemory has already been released." }, { "lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: tls: corrige el use-after-free en el descifrado fallido del trabajo pendiente Cuando la solicitud de descifrado va al trabajo pendiente y crypto_aead_decrypt devuelve -EBUSY, tls_do_decryption esperar\u00e1 hasta que se hayan completado todos los descifrados as\u00edncronos. Si uno de ellos falla, tls_do_decryption devolver\u00e1 -EBADMSG y tls_decrypt_sg salta a la ruta del error, liberando todas las p\u00e1ginas. Pero las p\u00e1ginas se pasaron a la devoluci\u00f3n de llamada as\u00edncrona y tls_decrypt_done ya las public\u00f3. El \u00fanico caso as\u00edncrono verdadero es cuando crypto_aead_decrypt devuelve -EINPROGRESS. Con -EBUSY, ya esperamos para poder decirle a tls_sw_recvmsg que los datos est\u00e1n disponibles para copia inmediata, pero debemos notificar a tls_decrypt_sg (a trav\u00e9s del nuevo indicador -\u0026gt;async_done) que la memoria ya ha sido liberada." } ], "id": "CVE-2024-26800", "lastModified": "2024-04-04T14:15:09.897", "metrics": {}, "published": "2024-04-04T09:15:09.003", "references": [ { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/13114dc5543069f7b97991e3b79937b6da05f5b0" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1ac9fb84bc7ecd4bc6428118301d9d864d2a58d1" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/81be85353b0f5a7b660635634b655329b429eefe" }, { "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f2b85a4cc763841843de693bbd7308fe9a2c4c89" } ], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis" } } } }
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