{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-03T22:21:40.519","vulnerabilities":[{"cve":{"id":"CVE-2025-38734","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2025-09-05T18:15:42.677","lastModified":"2025-11-25T21:59:17.530","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix UAF on smcsk after smc_listen_out()\n\nBPF CI testing report a UAF issue:\n\n [ 16.446633] BUG: kernel NULL pointer dereference, address: 000000000000003 0\n [ 16.447134] #PF: supervisor read access in kernel mod e\n [ 16.447516] #PF: error_code(0x0000) - not-present pag e\n [ 16.447878] PGD 0 P4D 0\n [ 16.448063] Oops: Oops: 0000 [#1] PREEMPT SMP NOPT I\n [ 16.448409] CPU: 0 UID: 0 PID: 9 Comm: kworker/0:1 Tainted: G OE 6.13.0-rc3-g89e8a75fda73-dirty #4 2\n [ 16.449124] Tainted: [O]=OOT_MODULE, [E]=UNSIGNED_MODUL E\n [ 16.449502] Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/201 4\n [ 16.450201] Workqueue: smc_hs_wq smc_listen_wor k\n [ 16.450531] RIP: 0010:smc_listen_work+0xc02/0x159 0\n [ 16.452158] RSP: 0018:ffffb5ab40053d98 EFLAGS: 0001024 6\n [ 16.452526] RAX: 0000000000000001 RBX: 0000000000000002 RCX: 000000000000030 0\n [ 16.452994] RDX: 0000000000000280 RSI: 00003513840053f0 RDI: 000000000000000 0\n [ 16.453492] RBP: ffffa097808e3800 R08: ffffa09782dba1e0 R09: 000000000000000 5\n [ 16.453987] R10: 0000000000000000 R11: 0000000000000000 R12: ffffa0978274640 0\n [ 16.454497] R13: 0000000000000000 R14: 0000000000000000 R15: ffffa09782d4092 0\n [ 16.454996] FS: 0000000000000000(0000) GS:ffffa097bbc00000(0000) knlGS:000000000000000 0\n [ 16.455557] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003 3\n [ 16.455961] CR2: 0000000000000030 CR3: 0000000102788004 CR4: 0000000000770ef 0\n [ 16.456459] PKRU: 5555555 4\n [ 16.456654] Call Trace :\n [ 16.456832] \n [ 16.456989] ? __die+0x23/0x7 0\n [ 16.457215] ? page_fault_oops+0x180/0x4c 0\n [ 16.457508] ? __lock_acquire+0x3e6/0x249 0\n [ 16.457801] ? exc_page_fault+0x68/0x20 0\n [ 16.458080] ? asm_exc_page_fault+0x26/0x3 0\n [ 16.458389] ? smc_listen_work+0xc02/0x159 0\n [ 16.458689] ? smc_listen_work+0xc02/0x159 0\n [ 16.458987] ? lock_is_held_type+0x8f/0x10 0\n [ 16.459284] process_one_work+0x1ea/0x6d 0\n [ 16.459570] worker_thread+0x1c3/0x38 0\n [ 16.459839] ? __pfx_worker_thread+0x10/0x1 0\n [ 16.460144] kthread+0xe0/0x11 0\n [ 16.460372] ? __pfx_kthread+0x10/0x1 0\n [ 16.460640] ret_from_fork+0x31/0x5 0\n [ 16.460896] ? __pfx_kthread+0x10/0x1 0\n [ 16.461166] ret_from_fork_asm+0x1a/0x3 0\n [ 16.461453] \n [ 16.461616] Modules linked in: bpf_testmod(OE) [last unloaded: bpf_testmod(OE) ]\n [ 16.462134] CR2: 000000000000003 0\n [ 16.462380] ---[ end trace 0000000000000000 ]---\n [ 16.462710] RIP: 0010:smc_listen_work+0xc02/0x1590\n\nThe direct cause of this issue is that after smc_listen_out_connected(),\nnewclcsock->sk may be NULL since it will releases the smcsk. Therefore,\nif the application closes the socket immediately after accept,\nnewclcsock->sk can be NULL. A possible execution order could be as\nfollows:\n\nsmc_listen_work | userspace\n-----------------------------------------------------------------\nlock_sock(sk) |\nsmc_listen_out_connected() |\n| \\- smc_listen_out |\n| | \\- release_sock |\n | |- sk->sk_data_ready() |\n | fd = accept();\n | close(fd);\n | \\- socket->sk = NULL;\n/* newclcsock->sk is NULL now */\nSMC_STAT_SERV_SUCC_INC(sock_net(newclcsock->sk))\n\nSince smc_listen_out_connected() will not fail, simply swapping the order\nof the code can easily fix this issue."}],"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:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-416"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18","versionEndExcluding":"6.6.103","matchCriteriaId":"54CDC610-1E95-40F6-A755-81E1D6C4ABC8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.44","matchCriteriaId":"12351F24-1133-4775-960C-F2B47E81298B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.16.4","matchCriteriaId":"AFC28995-B8C3-4B68-8CB6-78E792B6629D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:*","matchCriteriaId":"327D22EF-390B-454C-BD31-2ED23C998A1C"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*","matchCriteriaId":"C730CD9A-D969-4A8E-9522-162AAF7C0EE9"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/070b4af44c4b6e4c35fb1ca7001a6a88fd2d318f","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/2e765ba0ee0eae35688b443e97108308a716773e","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/85545f1525f9fa9bf44fec77ba011024f15da342","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/d9cef55ed49117bd63695446fb84b4b91815c0b4","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}