{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-15T22:46:21.977","vulnerabilities":[{"cve":{"id":"CVE-2022-49814","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-05-01T15:16:04.787","lastModified":"2025-11-07T18:51:24.070","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nkcm: close race conditions on sk_receive_queue\n\nsk->sk_receive_queue is protected by skb queue lock, but for KCM\nsockets its RX path takes mux->rx_lock to protect more than just\nskb queue. However, kcm_recvmsg() still only grabs the skb queue\nlock, so race conditions still exist.\n\nWe can teach kcm_recvmsg() to grab mux->rx_lock too but this would\nintroduce a potential performance regression as struct kcm_mux can\nbe shared by multiple KCM sockets.\n\nSo we have to enforce skb queue lock in requeue_rx_msgs() and handle\nskb peek case carefully in kcm_wait_data(). Fortunately,\nskb_recv_datagram() already handles it nicely and is widely used by\nother sockets, we can just switch to skb_recv_datagram() after\ngetting rid of the unnecessary sock lock in kcm_recvmsg() and\nkcm_splice_read(). Side note: SOCK_DONE is not used by KCM sockets,\nso it is safe to get rid of this check too.\n\nI ran the original syzbot reproducer for 30 min without seeing any\nissue."},{"lang":"es","value":"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: kcm: condiciones de ejecución cerradas en sk_receive_queue. sk->sk_receive_queue está protegido por el bloqueo de cola skb, pero para los sockets KCM su ruta RX toma mux->rx_lock para proteger más que solo la cola skb. Sin embargo, kcm_recvmsg() todavía solo captura el bloqueo de cola skb, por lo que las condiciones de ejecución aún existen. Podemos enseñar a kcm_recvmsg() a capturar también mux->rx_lock, pero esto introduciría una posible regresión del rendimiento, ya que la estructura kcm_mux puede ser compartida por varios sockets KCM. Por lo tanto, debemos aplicar el bloqueo de cola skb en requeue_rx_msgs() y manejar el caso de skb peek con cuidado en kcm_wait_data(). Afortunadamente, skb_recv_datagram() ya lo gestiona correctamente y es ampliamente utilizado por otros sockets. Podemos cambiar a skb_recv_datagram() tras eliminar el bloqueo de sock innecesario en kcm_recvmsg() y kcm_splice_read(). Nota: Los sockets KCM no utilizan SOCK_DONE, por lo que también es seguro omitir esta comprobación. Ejecuté el reproductor syzbot original durante 30 minutos sin observar ningún problema."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":4.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.0,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-362"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.6","versionEndExcluding":"4.14.300","matchCriteriaId":"28F9FB24-45B7-427D-8BB8-C4F91A2CA203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"4.19.267","matchCriteriaId":"A5C69A12-68E2-400E-9A5A-375A673C8402"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.4.225","matchCriteriaId":"94D21814-3051-4860-AB06-C7880A3D4933"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"5.10.156","matchCriteriaId":"E2152F3D-E6D3-405D-B0BE-911B8B6E2EE6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.11","versionEndExcluding":"5.15.80","matchCriteriaId":"51BBEF3B-79F5-4D4C-ADBA-F34DA0E2465C"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.0.10","matchCriteriaId":"64F9ADD1-3ADB-4D66-A00F-4A83010B05F0"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*","matchCriteriaId":"E7E331DA-1FB0-4DEC-91AC-7DA69D461C11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*","matchCriteriaId":"17F0B248-42CF-4AE6-A469-BB1BAE7F4705"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*","matchCriteriaId":"E2422816-0C14-4B5E-A1E6-A9D776E5C49B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*","matchCriteriaId":"1C6E00FE-5FB9-4D20-A1A1-5A32128F9B76"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*","matchCriteriaId":"35B26BE4-43A6-4A36-A7F6-5B3F572D9186"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/22f6b5d47396b4287662668ee3f5c1f766cb4259","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/4154b6afa2bd639214ff259d912faad984f7413a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/5121197ecc5db58c07da95eb1ff82b98b121a221","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/bf92e54597d842da127c59833b365d6faeeaf020","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/ce57d6474ae999a3b2d442314087473a646a65c7","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/d9ad4de92e184b19bcae4da10dac0275abf83931","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/f7b0e95071bb4be4b811af3f0bfc3e200eedeaa3","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}