{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-05T00:12:15.263","vulnerabilities":[{"cve":{"id":"CVE-2023-52767","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2024-05-21T16:15:15.917","lastModified":"2025-01-06T20:29:40.047","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntls: fix NULL deref on tls_sw_splice_eof() with empty record\n\nsyzkaller discovered that if tls_sw_splice_eof() is executed as part of\nsendfile() when the plaintext/ciphertext sk_msg are empty, the send path\ngets confused because the empty ciphertext buffer does not have enough\nspace for the encryption overhead. This causes tls_push_record() to go on\nthe `split = true` path (which is only supposed to be used when interacting\nwith an attached BPF program), and then get further confused and hit the\ntls_merge_open_record() path, which then assumes that there must be at\nleast one populated buffer element, leading to a NULL deref.\n\nIt is possible to have empty plaintext/ciphertext buffers if we previously\nbailed from tls_sw_sendmsg_locked() via the tls_trim_both_msgs() path.\ntls_sw_push_pending_record() already handles this case correctly; let's do\nthe same check in tls_sw_splice_eof()."},{"lang":"es","value":"En el kernel de Linux, se resolvió la siguiente vulnerabilidad: tls: corrige NULL deref en tls_sw_splice_eof() con registro vacío syzkaller descubrió que si tls_sw_splice_eof() se ejecuta como parte de sendfile() cuando el texto plano/texto cifrado sk_msg está vacío, el envío La ruta se confunde porque el búfer de texto cifrado vacío no tiene suficiente espacio para la sobrecarga de cifrado. Esto hace que tls_push_record() vaya a la ruta `split = true` (que se supone que solo debe usarse al interactuar con un programa BPF adjunto), y luego se confunda aún más y acceda a la ruta tls_merge_open_record(), que luego supone que hay debe haber al menos un elemento de búfer poblado, lo que lleva a una deref NULL. Es posible tener buffers de texto plano/texto cifrado vacíos si previamente salimos de tls_sw_sendmsg_locked() a través de la ruta tls_trim_both_msgs(). tls_sw_push_pending_record() ya maneja este caso correctamente; hagamos la misma verificación en tls_sw_splice_eof()."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-476"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.5","versionEndExcluding":"6.6.4","matchCriteriaId":"C5AC7A97-CD56-4012-B418-D5FF1799F8CC"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:*","matchCriteriaId":"3A0038DE-E183-4958-A6E3-CE3821FEAFBF"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:*","matchCriteriaId":"E31AD4FC-436C-44AB-BCAB-3A0B37F69EE0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2214e2bb5489145aba944874d0ee1652a0a63dc8","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/53f2cb491b500897a619ff6abd72f565933760f0","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/944900fe2736c07288efe2d9394db4d3ca23f2c9","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/2214e2bb5489145aba944874d0ee1652a0a63dc8","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/53f2cb491b500897a619ff6abd72f565933760f0","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/944900fe2736c07288efe2d9394db4d3ca23f2c9","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]}]}}]}