{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-38465","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-04-16T04:51:24.020Z","datePublished":"2025-07-25T15:27:47.510Z","dateUpdated":"2026-05-12T12:05:00.951Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T21:28:32.252Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetlink: Fix wraparounds of sk->sk_rmem_alloc.\n\nNetlink has this pattern in some places\n\n  if (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf)\n  \tatomic_add(skb->truesize, &sk->sk_rmem_alloc);\n\n, which has the same problem fixed by commit 5a465a0da13e (\"udp:\nFix multiple wraparounds of sk->sk_rmem_alloc.\").\n\nFor example, if we set INT_MAX to SO_RCVBUFFORCE, the condition\nis always false as the two operands are of int.\n\nThen, a single socket can eat as many skb as possible until OOM\nhappens, and we can see multiple wraparounds of sk->sk_rmem_alloc.\n\nLet's fix it by using atomic_add_return() and comparing the two\nvariables as unsigned int.\n\nBefore:\n  [root@fedora ~]# ss -f netlink\n  Recv-Q      Send-Q Local Address:Port                Peer Address:Port\n  -1668710080 0               rtnl:nl_wraparound/293               *\n\nAfter:\n  [root@fedora ~]# ss -f netlink\n  Recv-Q     Send-Q Local Address:Port                Peer Address:Port\n  2147483072 0               rtnl:nl_wraparound/290               *\n  ^\n  `--- INT_MAX - 576"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netlink/af_netlink.c"],"versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"9da025150b7c14a8390fc06aea314c0a4011e82c","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"c4ceaac5c5ba0b992ee1dc88e2a02421549e5c98","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"fd69af06101090eaa60b3d216ae715f9c0a58e5b","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"76602d8e13864524382b0687dc32cd8f19164d5a","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"55baecb9eb90238f60a8350660d6762046ebd3bd","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"4b8e18af7bea92f8b7fb92d40aeae729209db250","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"cd7ff61bfffd7000143c42bbffb85eeb792466d6","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"ae8f160e7eb24240a2a79fc4c815c6a0d4ee16cc","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netlink/af_netlink.c"],"versions":[{"version":"2.6.12","status":"affected"},{"version":"0","lessThan":"2.6.12","status":"unaffected","versionType":"semver"},{"version":"5.4.296","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.240","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.189","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.146","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.99","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.39","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.15.7","lessThanOrEqual":"6.15.*","status":"unaffected","versionType":"semver"},{"version":"6.16","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.4.296"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.10.240"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.15.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.1.146"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.6.99"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.12.39"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.15.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.16"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/9da025150b7c14a8390fc06aea314c0a4011e82c"},{"url":"https://git.kernel.org/stable/c/c4ceaac5c5ba0b992ee1dc88e2a02421549e5c98"},{"url":"https://git.kernel.org/stable/c/fd69af06101090eaa60b3d216ae715f9c0a58e5b"},{"url":"https://git.kernel.org/stable/c/76602d8e13864524382b0687dc32cd8f19164d5a"},{"url":"https://git.kernel.org/stable/c/55baecb9eb90238f60a8350660d6762046ebd3bd"},{"url":"https://git.kernel.org/stable/c/4b8e18af7bea92f8b7fb92d40aeae729209db250"},{"url":"https://git.kernel.org/stable/c/cd7ff61bfffd7000143c42bbffb85eeb792466d6"},{"url":"https://git.kernel.org/stable/c/ae8f160e7eb24240a2a79fc4c815c6a0d4ee16cc"}],"title":"netlink: 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MFP","versions":[{"status":"affected","version":"V3.1.5","lessThan":"*","versionType":"custom"}],"defaultStatus":"unknown"},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","versions":[{"status":"affected","version":"V3.1.5","lessThan":"*","versionType":"custom"}],"defaultStatus":"unknown"},{"vendor":"Siemens","product":"SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP","versions":[{"status":"affected","version":"V3.1.5","lessThan":"*","versionType":"custom"}],"defaultStatus":"unknown"},{"vendor":"Siemens","product":"SIPLUS S7-1500 CPU 1518-4 PN/DP MFP","versions":[{"status":"affected","version":"V3.1.5","lessThan":"*","versionType":"custom"}],"defaultStatus":"unknown"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-082556.html"}]}]}}