{"cve":"CVE-2025-22033","nvd":{"published":"2025-04-16T15:15:55.923","modified":"2026-06-17T08:44:53.587","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\narm64: Don't call NULL in do_compat_alignment_fixup()\n\ndo_alignment_t32_to_handler() only fixes up alignment faults for\nspecific instructions; it returns NULL otherwise (e.g. LDREX). When\nthat's the case, signal to the caller that it needs to proceed with the\nregular alignment fault handling (i.e. SIGBUS). Without this patch, the\nkernel panics:\n\n  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n  Mem abort info:\n    ESR = 0x0000000086000006\n    EC = 0x21: IABT (current EL), IL = 32 bits\n    SET = 0, FnV = 0\n    EA = 0, S1PTW = 0\n    FSC = 0x06: level 2 translation fault\n  user pgtable: 4k pages, 48-bit VAs, pgdp=00000800164aa000\n  [0000000000000000] pgd=0800081fdbd22003, p4d=0800081fdbd22003, pud=08000815d51c6003, pmd=0000000000000000\n  Internal error: Oops: 0000000086000006 [#1] SMP\n  Modules linked in: cfg80211 rfkill xt_nat xt_tcpudp xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack_netlink nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xfrm_user xfrm_algo xt_addrtype nft_compat br_netfilter veth nvme_fa>\n   libcrc32c crc32c_generic raid0 multipath linear dm_mod dax raid1 md_mod xhci_pci nvme xhci_hcd nvme_core t10_pi usbcore igb crc64_rocksoft crc64 crc_t10dif crct10dif_generic crct10dif_ce crct10dif_common usb_common i2c_algo_bit i2c>\n  CPU: 2 PID: 3932954 Comm: WPEWebProcess Not tainted 6.1.0-31-arm64 #1  Debian 6.1.128-1\n  Hardware name: GIGABYTE MP32-AR1-00/MP32-AR1-00, BIOS F18v (SCP: 1.08.20211002) 12/01/2021\n  pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n  pc : 0x0\n  lr : do_compat_alignment_fixup+0xd8/0x3dc\n  sp : ffff80000f973dd0\n  x29: ffff80000f973dd0 x28: ffff081b42526180 x27: 0000000000000000\n  x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000\n  x23: 0000000000000004 x22: 0000000000000000 x21: 0000000000000001\n  x20: 00000000e8551f00 x19: ffff80000f973eb0 x18: 0000000000000000\n  x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000\n  x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n  x11: 0000000000000000 x10: 0000000000000000 x9 : ffffaebc949bc488\n  x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000\n  x5 : 0000000000400000 x4 : 0000fffffffffffe x3 : 0000000000000000\n  x2 : ffff80000f973eb0 x1 : 00000000e8551f00 x0 : 0000000000000001\n  Call trace:\n   0x0\n   do_alignment_fault+0x40/0x50\n   do_mem_abort+0x4c/0xa0\n   el0_da+0x48/0xf0\n   el0t_32_sync_handler+0x110/0x140\n   el0t_32_sync+0x190/0x194\n  Code: bad PC value\n  ---[ end trace 0000000000000000 ]---","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":["CWE-476"],"references":["https://git.kernel.org/stable/c/2df8ee605eb6806cd41c2095306db05206633a08","https://git.kernel.org/stable/c/617a4b0084a547917669fef2b54253cc9c064990","https://git.kernel.org/stable/c/c28f31deeacda307acfee2f18c0ad904e5123aac","https://git.kernel.org/stable/c/cf187601053ecaf671ae645edb898901f81d03e9","https://git.kernel.org/stable/c/ecf798573bbe0805803f7764e12a34b4bcc65074"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:01:11.054312287+00:00"},"epss":{"cve":"CVE-2025-22033","score":0.00204,"percentile":0.1037,"date":"2026-10-31"},"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."]}