{ "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-2024-50126", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-50126", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-11-05T17:10:53.741Z", "updatedAt": "2026-08-05T11:41:52.047Z", "importedAt": "2026-10-24T01:57:20.494Z", "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": "net: sched: use RCU read-side critical section in taprio_dump()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sched: use RCU read-side critical section in taprio_dump()\n\nFix possible use-after-free in 'taprio_dump()' by adding RCU\nread-side critical section there. Never seen on x86 but\nfound on a KASAN-enabled arm64 system when investigating\nhttps://syzkaller.appspot.com/bug?extid=b65e0af58423fc8a73aa:\n\n[T15862] BUG: KASAN: slab-use-after-free in taprio_dump+0xa0c/0xbb0\n[T15862] Read of size 4 at addr ffff0000d4bb88f8 by task repro/15862\n[T15862]\n[T15862] CPU: 0 UID: 0 PID: 15862 Comm: repro Not tainted 6.11.0-rc1-00293-gdefaf1a2113a-dirty #2\n[T15862] Hardware name: QEMU QEMU Virtual Machine, BIOS edk2-20240524-5.fc40 05/24/2024\n[T15862] Call trace:\n[T15862] dump_backtrace+0x20c/0x220\n[T15862] show_stack+0x2c/0x40\n[T15862] dump_stack_lvl+0xf8/0x174\n[T15862] print_report+0x170/0x4d8\n[T15862] kasan_report+0xb8/0x1d4\n[T15862] __asan_report_load4_noabort+0x20/0x2c\n[T15862] taprio_dump+0xa0c/0xbb0\n[T15862] tc_fill_qdisc+0x540/0x1020\n[T15862] qdisc_notify.isra.0+0x330/0x3a0\n[T15862] tc_modify_qdisc+0x7b8/0x1838\n[T15862] rtnetlink_rcv_msg+0x3c8/0xc20\n[T15862] netlink_rcv_skb+0x1f8/0x3d4\n[T15862] rtnetlink_rcv+0x28/0x40\n[T15862] netlink_unicast+0x51c/0x790\n[T15862] netlink_sendmsg+0x79c/0xc20\n[T15862] __sock_sendmsg+0xe0/0x1a0\n[T15862] ____sys_sendmsg+0x6c0/0x840\n[T15862] ___sys_sendmsg+0x1ac/0x1f0\n[T15862] __sys_sendmsg+0x110/0x1d0\n[T15862] __arm64_sys_sendmsg+0x74/0xb0\n[T15862] invoke_syscall+0x88/0x2e0\n[T15862] el0_svc_common.constprop.0+0xe4/0x2a0\n[T15862] do_el0_svc+0x44/0x60\n[T15862] el0_svc+0x50/0x184\n[T15862] el0t_64_sync_handler+0x120/0x12c\n[T15862] el0t_64_sync+0x190/0x194\n[T15862]\n[T15862] Allocated by task 15857:\n[T15862] kasan_save_stack+0x3c/0x70\n[T15862] kasan_save_track+0x20/0x3c\n[T15862] kasan_save_alloc_info+0x40/0x60\n[T15862] __kasan_kmalloc+0xd4/0xe0\n[T15862] __kmalloc_cache_noprof+0x194/0x334\n[T15862] taprio_change+0x45c/0x2fe0\n[T15862] tc_modify_qdisc+0x6a8/0x1838\n[T15862] rtnetlink_rcv_msg+0x3c8/0xc20\n[T15862] netlink_rcv_skb+0x1f8/0x3d4\n[T15862] rtnetlink_rcv+0x28/0x40\n[T15862] netlink_unicast+0x51c/0x790\n[T15862] netlink_sendmsg+0x79c/0xc20\n[T15862] __sock_sendmsg+0xe0/0x1a0\n[T15862] ____sys_sendmsg+0x6c0/0x840\n[T15862] ___sys_sendmsg+0x1ac/0x1f0\n[T15862] __sys_sendmsg+0x110/0x1d0\n[T15862] __arm64_sys_sendmsg+0x74/0xb0\n[T15862] invoke_syscall+0x88/0x2e0\n[T15862] el0_svc_common.constprop.0+0xe4/0x2a0\n[T15862] do_el0_svc+0x44/0x60\n[T15862] el0_svc+0x50/0x184\n[T15862] el0t_64_sync_handler+0x120/0x12c\n[T15862] el0t_64_sync+0x190/0x194\n[T15862]\n[T15862] Freed by task 6192:\n[T15862] kasan_save_stack+0x3c/0x70\n[T15862] kasan_save_track+0x20/0x3c\n[T15862] kasan_save_free_info+0x4c/0x80\n[T15862] poison_slab_object+0x110/0x160\n[T15862] __kasan_slab_free+0x3c/0x74\n[T15862] kfree+0x134/0x3c0\n[T15862] taprio_free_sched_cb+0x18c/0x220\n[T15862] rcu_core+0x920/0x1b7c\n[T15862] rcu_core_si+0x10/0x1c\n[T15862] handle_softirqs+0x2e8/0xd64\n[T15862] __do_softirq+0x14/0x20", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "18cdd2f0998a4967b1fff4c43ed9aef049e42c39", "status": "affected", "versionType": "git", "lessThan": "b911fa9e92ee586e36479ad57b88f20471acaca1" }, { "version": "18cdd2f0998a4967b1fff4c43ed9aef049e42c39", "status": "affected", "versionType": "git", "lessThan": "5d282467245f267c0b9ada3f7f309ff838521536" }, { "version": "18cdd2f0998a4967b1fff4c43ed9aef049e42c39", "status": "affected", "versionType": "git", "lessThan": "e4369cb6acf6b895ac2453cc1cdf2f4326122c6d" }, { "version": "18cdd2f0998a4967b1fff4c43ed9aef049e42c39", "status": "affected", "versionType": "git", "lessThan": "b22db8b8befe90b61c98626ca1a2fbb0505e9fe3" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.1", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.1" }, { "version": "6.1.117", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.59", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.11.6", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.11.*" }, { "version": "6.12", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }