{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-12T02:04:20.002","vulnerabilities":[{"cve":{"id":"CVE-2026-23310","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2026-03-25T11:16:27.160","lastModified":"2026-05-28T14:20:22.840","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf/bonding: reject vlan+srcmac xmit_hash_policy change when XDP is loaded\n\nbond_option_mode_set() already rejects mode changes that would make a\nloaded XDP program incompatible via bond_xdp_check().  However,\nbond_option_xmit_hash_policy_set() has no such guard.\n\nFor 802.3ad and balance-xor modes, bond_xdp_check() returns false when\nxmit_hash_policy is vlan+srcmac, because the 802.1q payload is usually\nabsent due to hardware offload.  This means a user can:\n\n1. Attach a native XDP program to a bond in 802.3ad/balance-xor mode\n   with a compatible xmit_hash_policy (e.g. layer2+3).\n2. Change xmit_hash_policy to vlan+srcmac while XDP remains loaded.\n\nThis leaves bond->xdp_prog set but bond_xdp_check() now returning false\nfor the same device.  When the bond is later destroyed, dev_xdp_uninstall()\ncalls bond_xdp_set(dev, NULL, NULL) to remove the program, which hits\nthe bond_xdp_check() guard and returns -EOPNOTSUPP, triggering:\n\nWARN_ON(dev_xdp_install(dev, mode, bpf_op, NULL, 0, NULL))\n\nFix this by rejecting xmit_hash_policy changes to vlan+srcmac when an\nXDP program is loaded on a bond in 802.3ad or balance-xor mode.\n\ncommit 39a0876d595b (\"net, bonding: Disallow vlan+srcmac with XDP\")\nintroduced bond_xdp_check() which returns false for 802.3ad/balance-xor\nmodes when xmit_hash_policy is vlan+srcmac.  The check was wired into\nbond_xdp_set() to reject XDP attachment with an incompatible policy, but\nthe symmetric path -- preventing xmit_hash_policy from being changed to an\nincompatible value after XDP is already loaded -- was left unguarded in\nbond_option_xmit_hash_policy_set().\n\nNote:\ncommit 094ee6017ea0 (\"bonding: check xdp prog when set bond mode\")\nlater added a similar guard to bond_option_mode_set(), but\nbond_option_xmit_hash_policy_set() remained unprotected."},{"lang":"es","value":"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nbpf/bonding: rechazar el cambio de política de hash de transmisión (xmit_hash_policy) a vlan+srcmac cuando XDP está cargado\n\nbond_option_mode_set() ya rechaza los cambios de modo que harían incompatible un programa XDP cargado a través de bond_xdp_check(). Sin embargo, bond_option_xmit_hash_policy_set() no tiene tal protección.\n\nPara los modos 802.3ad y balance-xor, bond_xdp_check() devuelve falso cuando la política de hash de transmisión (xmit_hash_policy) es vlan+srcmac, porque la carga útil 802.1q suele estar ausente debido a la descarga de hardware. Esto significa que un usuario puede:\n\n1. Adjuntar un programa XDP nativo a un bond en modo 802.3ad/balance-xor con una política de hash de transmisión (xmit_hash_policy) compatible (por ejemplo, capa2+3).\n2. Cambiar la política de hash de transmisión (xmit_hash_policy) a vlan+srcmac mientras XDP permanece cargado.\n\nEsto deja bond->xdp_prog establecido, pero bond_xdp_check() ahora devuelve falso para el mismo dispositivo. Cuando el bond es destruido posteriormente, dev_xdp_uninstall() llama a bond_xdp_set(dev, NULL, NULL) para eliminar el programa, lo que activa la protección de bond_xdp_check() y devuelve -EOPNOTSUPP, desencadenando:\n\nWARN_ON(dev_xdp_install(dev, mode, bpf_op, NULL, 0, NULL))\n\nSolucione esto rechazando los cambios de política de hash de transmisión (xmit_hash_policy) a vlan+srcmac cuando un programa XDP está cargado en un bond en modo 802.3ad o balance-xor.\n\nEl commit 39a0876d595b ('net, bonding: No permitir vlan+srcmac con XDP') introdujo bond_xdp_check() que devuelve falso para los modos 802.3ad/balance-xor cuando la política de hash de transmisión (xmit_hash_policy) es vlan+srcmac. La verificación se integró en bond_xdp_set() para rechazar la asociación de XDP con una política incompatible, pero la ruta simétrica -- impidiendo que la política de hash de transmisión (xmit_hash_policy) se cambie a un valor incompatible después de que XDP ya esté cargado -- se dejó sin protección en bond_option_xmit_hash_policy_set().\n\nNota:\nEl commit 094ee6017ea0 ('bonding: verificar programa xdp al establecer modo de bond') añadió posteriormente una protección similar a bond_option_mode_set(), pero bond_option_xmit_hash_policy_set() permaneció sin protección."}],"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":"NVD-CWE-noinfo"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.130","matchCriteriaId":"E265D934-61CB-43A3-82C6-6D0F5B6DD9D1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.77","matchCriteriaId":"B3D12E00-E42D-4056-B354-BAD4903C03A5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.17","matchCriteriaId":"A5E006E4-59C7-43C1-9231-62A72219F2BA"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"6.19.7","matchCriteriaId":"69245D10-0B71-485E-80C3-A64F077004D3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*","matchCriteriaId":"F253B622-8837-4245-BCE5-A7BF8FC76A16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*","matchCriteriaId":"4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0ace8027e41f6f094ef6c1aca42d2ed6cd7af54e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/479d589b40b836442bbdadc3fdb37f001bb67f26","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/5c262bd0e39320a6d6c8277cb8349ce21c01b8c1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/d36ad7e126c6a0c5f699583309ccc37e3a3263ea","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/e85fa809e507b9d8eff4840888b8c727e4e8448c","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}