CVE-2026-23459

{"id": "CVE-2026-23459", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 3.9}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "be226352e8dc77d3313c096b2d8e7f69bf6980fc", "lessThan": "0d087d00161f562d5047cc4009bb0c6a19daf9f1", "versionType": "git"}, {"status": "affected", "version": "be226352e8dc77d3313c096b2d8e7f69bf6980fc", "lessThan": "8431c602f551549f082bbfa67f3003f2d8e3e132", "versionType": "git"}], "programFiles": ["include/linux/netdevice.h", "include/net/ip_tunnels.h"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.14"}, {"status": "unaffected", "version": "0", "lessThan": "6.14", "versionType": "semver"}, {"status": "unaffected", "version": "6.19.10", "versionType": "semver", "lessThanOrEqual": "6.19.*"}, {"status": "unaffected", "version": "7.0", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["include/linux/netdevice.h", "include/net/ip_tunnels.h"], "defaultStatus": "affected"}]}], "published": "2026-04-03T16:16:32.833", "references": [{"url": "https://git.kernel.org/stable/c/0d087d00161f562d5047cc4009bb0c6a19daf9f1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8431c602f551549f082bbfa67f3003f2d8e3e132", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nip_tunnel: adapt iptunnel_xmit_stats() to NETDEV_PCPU_STAT_DSTATS\n\nBlamed commits forgot that vxlan/geneve use udp_tunnel[6]_xmit_skb() which\ncall iptunnel_xmit_stats().\n\niptunnel_xmit_stats() was assuming tunnels were only using\nNETDEV_PCPU_STAT_TSTATS.\n\n@syncp offset in pcpu_sw_netstats and pcpu_dstats is different.\n\n32bit kernels would either have corruptions or freezes if the syncp\nsequence was overwritten.\n\nThis patch also moves pcpu_stat_type closer to dev->{t,d}stats to avoid\na potential cache line miss since iptunnel_xmit_stats() needs to read it."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nip_tunnel: adaptar iptunnel_xmit_stats() a NETDEV_PCPU_STAT_DSTATS\n\nLos commits culpables olvidaron que vxlan/geneve usan udp_tunnel[6]_xmit_skb() que llama a iptunnel_xmit_stats().\n\niptunnel_xmit_stats() asum\u00eda que los t\u00faneles solo usaban NETDEV_PCPU_STAT_TSTATS.\n\nEl desplazamiento @syncp en pcpu_sw_netstats y pcpu_dstats es diferente.\n\nLos kernels de 32 bits tendr\u00edan o bien corrupciones o congelamientos si la secuencia syncp era sobrescrita.\n\nEste parche tambi\u00e9n mueve pcpu_stat_type m\u00e1s cerca de dev -> {t,d}stats para evitar una posible p\u00e9rdida de l\u00ednea de cach\u00e9 ya que iptunnel_xmit_stats() necesita leerlo."}], "lastModified": "2026-07-24T22:10:00.140", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2B2C5324-E9BD-43C2-AA70-44A311B13130", "versionEndExcluding": "6.19.10", "versionStartIncluding": "6.14"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F666C8D8-6538-46D4-B318-87610DE64C34"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "02259FDA-961B-47BC-AE7F-93D7EC6E90C2"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}