{"id":"CVE-2025-68787","state":"PUBLISHED","title":"netrom: Fix memory leak in nr_sendmsg()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetrom: Fix memory leak in nr_sendmsg()\n\nsyzbot reported a memory leak [1].\n\nWhen function sock_alloc_send_skb() return NULL in nr_output(), the\noriginal skb is not freed, which was allocated in nr_sendmsg(). Fix this\nby freeing it before return.\n\n[1]\nBUG: memory leak\nunreferenced object 0xffff888129f35500 (size 240):\n  comm \"syz.0.17\", pid 6119, jiffies 4294944652\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 10 52 28 81 88 ff ff  ..........R(....\n  backtrace (crc 1456a3e4):\n    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]\n    slab_post_alloc_hook mm/slub.c:4983 [inline]\n    slab_alloc_node mm/slub.c:5288 [inline]\n    kmem_cache_alloc_node_noprof+0x36f/0x5e0 mm/slub.c:5340\n    __alloc_skb+0x203/0x240 net/core/skbuff.c:660\n    alloc_skb include/linux/skbuff.h:1383 [inline]\n    alloc_skb_with_frags+0x69/0x3f0 net/core/skbuff.c:6671\n    sock_alloc_send_pskb+0x379/0x3e0 net/core/sock.c:2965\n    sock_alloc_send_skb include/net/sock.h:1859 [inline]\n    nr_sendmsg+0x287/0x450 net/netrom/af_netrom.c:1105\n    sock_sendmsg_nosec net/socket.c:727 [inline]\n    __sock_sendmsg net/socket.c:742 [inline]\n    sock_write_iter+0x293/0x2a0 net/socket.c:1195\n    new_sync_write fs/read_write.c:593 [inline]\n    vfs_write+0x45d/0x710 fs/read_write.c:686\n    ksys_write+0x143/0x170 fs/read_write.c:738\n    do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n    do_syscall_64+0xa4/0xfa0 arch/x86/entry/syscall_64.c:94\n    entry_SYSCALL_64_after_hwframe+0x77/0x7f","publishedAt":"2026-01-13T15:29:00.344Z","updatedAt":"2026-10-15T01:10:11.911Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"f77e538ac4e3adb1882d5bccb7bfdc111b5963d3","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"09efbf54eeaecebe882af603c9939a4b1bb9567e","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"73839497bbde5cd4fd02bbd9c8bc2640780ae65d","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"156a0f6341dce634a825db49ca20b48b1ae9bcc1","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"8d1ccba4b171cd504ecfa47349cb9864fc9d687c","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"51f5fbc1681bdcffcc7d18bf3dfdb2b1278d3977","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"613d12dd794e078be8ff3cf6b62a6b9acf7f4619","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netrom/nr_out.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"5.10.248","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.198","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.160","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.120","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.3","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netrom/nr_out.c"]}],"references":["https://git.kernel.org/stable/c/f77e538ac4e3adb1882d5bccb7bfdc111b5963d3","https://git.kernel.org/stable/c/09efbf54eeaecebe882af603c9939a4b1bb9567e","https://git.kernel.org/stable/c/73839497bbde5cd4fd02bbd9c8bc2640780ae65d","https://git.kernel.org/stable/c/156a0f6341dce634a825db49ca20b48b1ae9bcc1","https://git.kernel.org/stable/c/8d1ccba4b171cd504ecfa47349cb9864fc9d687c","https://git.kernel.org/stable/c/51f5fbc1681bdcffcc7d18bf3dfdb2b1278d3977","https://git.kernel.org/stable/c/613d12dd794e078be8ff3cf6b62a6b9acf7f4619","https://cert-portal.siemens.com/productcert/html/ssa-019113.html","https://cert-portal.siemens.com/productcert/html/ssa-457936.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:56.034Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/68xxx/CVE-2025-68787.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-68787","state":"PUBLISHED","datePublished":"2026-01-13T15:29:00.344Z","dateUpdated":"2026-10-15T01:10:11.911Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-24T10:30:51.036Z"},"containers":{"cna":{"title":"netrom: Fix memory leak in nr_sendmsg()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetrom: Fix memory leak in nr_sendmsg()\n\nsyzbot reported a memory leak [1].\n\nWhen function sock_alloc_send_skb() return NULL in nr_output(), the\noriginal skb is not freed, which was allocated in nr_sendmsg(). Fix this\nby freeing it before return.\n\n[1]\nBUG: memory leak\nunreferenced object 0xffff888129f35500 (size 240):\n  comm \"syz.0.17\", pid 6119, jiffies 4294944652\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 10 52 28 81 88 ff ff  ..........R(....\n  backtrace (crc 1456a3e4):\n    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]\n    slab_post_alloc_hook mm/slub.c:4983 [inline]\n    slab_alloc_node mm/slub.c:5288 [inline]\n    kmem_cache_alloc_node_noprof+0x36f/0x5e0 mm/slub.c:5340\n    __alloc_skb+0x203/0x240 net/core/skbuff.c:660\n    alloc_skb include/linux/skbuff.h:1383 [inline]\n    alloc_skb_with_frags+0x69/0x3f0 net/core/skbuff.c:6671\n    sock_alloc_send_pskb+0x379/0x3e0 net/core/sock.c:2965\n    sock_alloc_send_skb include/net/sock.h:1859 [inline]\n    nr_sendmsg+0x287/0x450 net/netrom/af_netrom.c:1105\n    sock_sendmsg_nosec net/socket.c:727 [inline]\n    __sock_sendmsg net/socket.c:742 [inline]\n    sock_write_iter+0x293/0x2a0 net/socket.c:1195\n    new_sync_write fs/read_write.c:593 [inline]\n    vfs_write+0x45d/0x710 fs/read_write.c:686\n    ksys_write+0x143/0x170 fs/read_write.c:738\n    do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n    do_syscall_64+0xa4/0xfa0 arch/x86/entry/syscall_64.c:94\n    entry_SYSCALL_64_after_hwframe+0x77/0x7f"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"f77e538ac4e3adb1882d5bccb7bfdc111b5963d3","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"09efbf54eeaecebe882af603c9939a4b1bb9567e","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"73839497bbde5cd4fd02bbd9c8bc2640780ae65d","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"156a0f6341dce634a825db49ca20b48b1ae9bcc1","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"8d1ccba4b171cd504ecfa47349cb9864fc9d687c","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"51f5fbc1681bdcffcc7d18bf3dfdb2b1278d3977","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","status":"affected","lessThan":"613d12dd794e078be8ff3cf6b62a6b9acf7f4619","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netrom/nr_out.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.12","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.12","versionType":"semver"},{"version":"5.10.248","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.198","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.160","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.120","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.64","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.3","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netrom/nr_out.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/f77e538ac4e3adb1882d5bccb7bfdc111b5963d3"},{"url":"https://git.kernel.org/stable/c/09efbf54eeaecebe882af603c9939a4b1bb9567e"},{"url":"https://git.kernel.org/stable/c/73839497bbde5cd4fd02bbd9c8bc2640780ae65d"},{"url":"https://git.kernel.org/stable/c/156a0f6341dce634a825db49ca20b48b1ae9bcc1"},{"url":"https://git.kernel.org/stable/c/8d1ccba4b171cd504ecfa47349cb9864fc9d687c"},{"url":"https://git.kernel.org/stable/c/51f5fbc1681bdcffcc7d18bf3dfdb2b1278d3977"},{"url":"https://git.kernel.org/stable/c/613d12dd794e078be8ff3cf6b62a6b9acf7f4619"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:53:21.061Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.10.248"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"5.15.198"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.1.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.6.120"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.12.64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.18.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.12","versionEndExcluding":"6.19"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"affected":[{"vendor":"Siemens","product":"SIMATIC 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