CVE-2024-26800
Vulnerability from cvelistv5
Published
2024-04-04 08:20
Modified
2024-11-05 09:16
Severity ?
Summary
tls: fix use-after-free on failed backlog decryption
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website


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                "id": "CVE-2024-26800",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2024-07-31T20:01:08.576744Z",
                "version": "2.0.3"
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        "title": "CISA ADP Vulnrichment"
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        "providerMetadata": {
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    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/tls/tls_sw.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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          "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."
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    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26800",
    "datePublished": "2024-04-04T08:20:28.554Z",
    "dateReserved": "2024-02-19T14:20:24.179Z",
    "dateUpdated": "2024-11-05T09:16:03.786Z",
    "state": "PUBLISHED"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-26800\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-04-04T09:15:09.003\",\"lastModified\":\"2024-04-04T14:15:09.897\",\"vulnStatus\":\"Awaiting Analysis\",\"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.\"}],\"metrics\":{},\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
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