{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2025-38727", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-38727", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-09-04T15:33:25.286Z", "updatedAt": "2026-10-15T01:07:51.216Z", "importedAt": "2026-10-24T01:57:34.152Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "netlink: avoid infinite retry looping in netlink_unicast()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetlink: avoid infinite retry looping in netlink_unicast()\n\nnetlink_attachskb() checks for the socket's read memory allocation\nconstraints. Firstly, it has:\n\n rmem < READ_ONCE(sk->sk_rcvbuf)\n\nto check if the just increased rmem value fits into the socket's receive\nbuffer. If not, it proceeds and tries to wait for the memory under:\n\n rmem + skb->truesize > READ_ONCE(sk->sk_rcvbuf)\n\nThe checks don't cover the case when skb->truesize + sk->sk_rmem_alloc is\nequal to sk->sk_rcvbuf. Thus the function neither successfully accepts\nthese conditions, nor manages to reschedule the task - and is called in\nretry loop for indefinite time which is caught as:\n\n rcu: INFO: rcu_sched self-detected stall on CPU\n rcu: 0-....: (25999 ticks this GP) idle=ef2/1/0x4000000000000000 softirq=262269/262269 fqs=6212\n (t=26000 jiffies g=230833 q=259957)\n NMI backtrace for cpu 0\n CPU: 0 PID: 22 Comm: kauditd Not tainted 5.10.240 #68\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-4.fc42 04/01/2014\n Call Trace:\n \n dump_stack lib/dump_stack.c:120\n nmi_cpu_backtrace.cold lib/nmi_backtrace.c:105\n nmi_trigger_cpumask_backtrace lib/nmi_backtrace.c:62\n rcu_dump_cpu_stacks kernel/rcu/tree_stall.h:335\n rcu_sched_clock_irq.cold kernel/rcu/tree.c:2590\n update_process_times kernel/time/timer.c:1953\n tick_sched_handle kernel/time/tick-sched.c:227\n tick_sched_timer kernel/time/tick-sched.c:1399\n __hrtimer_run_queues kernel/time/hrtimer.c:1652\n hrtimer_interrupt kernel/time/hrtimer.c:1717\n __sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1113\n asm_call_irq_on_stack arch/x86/entry/entry_64.S:808\n \n\n netlink_attachskb net/netlink/af_netlink.c:1234\n netlink_unicast net/netlink/af_netlink.c:1349\n kauditd_send_queue kernel/audit.c:776\n kauditd_thread kernel/audit.c:897\n kthread kernel/kthread.c:328\n ret_from_fork arch/x86/entry/entry_64.S:304\n\nRestore the original behavior of the check which commit in Fixes\naccidentally missed when restructuring the code.\n\nFound by Linux Verification Center (linuxtesting.org).", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "9da025150b7c14a8390fc06aea314c0a4011e82c", "status": "affected", "versionType": "git", "lessThan": "47d49fd07f86d1f55ea1083287303d237e9e0922" }, { "version": "c4ceaac5c5ba0b992ee1dc88e2a02421549e5c98", "status": "affected", "versionType": "git", "lessThan": "6bee383ff83352a693d03efdf27cdd80742f71b2" }, { "version": "fd69af06101090eaa60b3d216ae715f9c0a58e5b", "status": "affected", "versionType": "git", "lessThan": "f324959ad47e62e3cadaffa65d3cff790fb48529" }, { "version": "76602d8e13864524382b0687dc32cd8f19164d5a", "status": "affected", "versionType": "git", "lessThan": "d42b71a34f6b8a2d5c53df81169b03b8d8b5cf4e" }, { "version": "55baecb9eb90238f60a8350660d6762046ebd3bd", "status": "affected", "versionType": "git", "lessThan": "346c820ef5135cf062fa3473da955ef8c5fb6929" }, { "version": "4b8e18af7bea92f8b7fb92d40aeae729209db250", "status": "affected", "versionType": "git", "lessThan": "44ddd7b1ae0b7edb2c832eb16798c827a05e58f0" }, { "version": "cd7ff61bfffd7000143c42bbffb85eeb792466d6", "status": "affected", "versionType": "git", "lessThan": "78fcd69d55c5f11d7694c547eca767a1cfd38ec4" }, { "version": "ae8f160e7eb24240a2a79fc4c815c6a0d4ee16cc", "status": "affected", "versionType": "git", "lessThan": "e8edc7de688791a337c068693f22e8d8b869df71" }, { "version": "ae8f160e7eb24240a2a79fc4c815c6a0d4ee16cc", "status": "affected", "versionType": "git", "lessThan": "759dfc7d04bab1b0b86113f1164dc1fec192b859" }, { "version": "5.4.296", "status": "affected", "versionType": "semver", "lessThan": "5.4.297" }, { "version": "5.10.240", "status": "affected", "versionType": "semver", "lessThan": "5.10.241" }, { "version": "5.15.189", "status": "affected", "versionType": "semver", "lessThan": "5.15.190" }, { "version": "6.1.146", "status": "affected", "versionType": "semver", "lessThan": "6.1.149" }, { "version": "6.6.99", "status": "affected", "versionType": "semver", "lessThan": "6.6.103" }, { "version": "6.12.39", "status": "affected", "versionType": "semver", "lessThan": "6.12.43" }, { "version": "6.15.7", "status": "affected", "versionType": "semver", "lessThan": "6.15.11" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.16", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.16" }, { "version": "5.4.297", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.241", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.190", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.149", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.103", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.12.43", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.12.*" }, { "version": "6.15.11", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.15.*" }, { "version": "6.16.2", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.16.*" }, { "version": "6.17", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }