{"cve":"CVE-2024-26783","nvd":{"published":"2024-04-04T09:15:08.077","modified":"2026-10-15T01:17:23.427","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/vmscan: fix a bug calling wakeup_kswapd() with a wrong zone index\n\nWith numa balancing on, when a numa system is running where a numa node\ndoesn't have its local memory so it has no managed zones, the following\noops has been observed.  It's because wakeup_kswapd() is called with a\nwrong zone index, -1.  Fixed it by checking the index before calling\nwakeup_kswapd().\n\n> BUG: unable to handle page fault for address: 00000000000033f3\n> #PF: supervisor read access in kernel mode\n> #PF: error_code(0x0000) - not-present page\n> PGD 0 P4D 0\n> Oops: 0000 [#1] PREEMPT SMP NOPTI\n> CPU: 2 PID: 895 Comm: masim Not tainted 6.6.0-dirty #255\n> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\n>    rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\n> RIP: 0010:wakeup_kswapd (./linux/mm/vmscan.c:7812)\n> Code: (omitted)\n> RSP: 0000:ffffc90004257d58 EFLAGS: 00010286\n> RAX: ffffffffffffffff RBX: ffff88883fff0480 RCX: 0000000000000003\n> RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88883fff0480\n> RBP: ffffffffffffffff R08: ff0003ffffffffff R09: ffffffffffffffff\n> R10: ffff888106c95540 R11: 0000000055555554 R12: 0000000000000003\n> R13: 0000000000000000 R14: 0000000000000000 R15: ffff88883fff0940\n> FS:  00007fc4b8124740(0000) GS:ffff888827c00000(0000) knlGS:0000000000000000\n> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n> CR2: 00000000000033f3 CR3: 000000026cc08004 CR4: 0000000000770ee0\n> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n> PKRU: 55555554\n> Call Trace:\n>  <TASK>\n> ? __die\n> ? page_fault_oops\n> ? __pte_offset_map_lock\n> ? exc_page_fault\n> ? asm_exc_page_fault\n> ? wakeup_kswapd\n> migrate_misplaced_page\n> __handle_mm_fault\n> handle_mm_fault\n> do_user_addr_fault\n> exc_page_fault\n> asm_exc_page_fault\n> RIP: 0033:0x55b897ba0808\n> Code: (omitted)\n> RSP: 002b:00007ffeefa821a0 EFLAGS: 00010287\n> RAX: 000055b89983acd0 RBX: 00007ffeefa823f8 RCX: 000055b89983acd0\n> RDX: 00007fc2f8122010 RSI: 0000000000020000 RDI: 000055b89983acd0\n> RBP: 00007ffeefa821a0 R08: 0000000000000037 R09: 0000000000000075\n> R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000\n> R13: 00007ffeefa82410 R14: 000055b897ba5dd8 R15: 00007fc4b8340000\n>  </TASK>","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/2774f256e7c0219e2b0a0894af1c76bdabc4f974","https://git.kernel.org/stable/c/bdd21eed8b72f9e28d6c279f6db258e090c79080","https://git.kernel.org/stable/c/d6159bd4c00594249e305bfe02304c67c506264e","https://git.kernel.org/stable/c/e5ec1c24e71dbf144677a975d6ba91043c2193db","https://git.kernel.org/stable/c/2774f256e7c0219e2b0a0894af1c76bdabc4f974"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:48:32.179249784+00:00"},"epss":{"cve":"CVE-2024-26783","score":0.00244,"percentile":0.15455,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}